My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras where he stated that both turns and hazards didn’t work. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
If the flasher doesn’t operate with the turn signal switch operated it could be that there is no power to operate the relay or no earth signal to say to turn the relay on and off.
The following is based on the circuit provided above (your vehicle may be different)
To check if there is power you need to test for power at pin 1 of the flasher unit with the ignition key in the On or Run position.
'''''if there is no power on pin 1 of the flasher unit''''' (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position.
''If there is power at the fuse'' then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
-
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signal circuit and from pin 3 to a different hazard switch contact for the hazard circuit
+
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3.
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4 -on the circuit it is shown as a purple wire) or it could also be a faulty hazard switch contact individual to the turns circuit
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras where he stated that both turns and hazards didn’t work. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
If the flasher doesn’t operate with the turn signal switch operated it could be that there is no power to operate the relay or no earth signal to say to turn the relay on and off.
The following is based on the circuit provided above (your vehicle may be different)
To check if there is power you need to test for power at pin 1 of the flasher unit with the ignition key in the On or Run position.
'''''if there is no power on pin 1 of the flasher unit''''' (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position.
''If there is power at the fuse'' then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
-
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 to a different hazard switch contact for the hazards after which they are merged and go as one to the appropriate L + R and F + R lights)
+
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signal circuit and from pin 3 to a different hazard switch contact for the hazard circuit
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4 -on the circuit it is shown as a purple wire) or it could also be a faulty hazard switch contact individual to the turns circuit
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras where he stated that both turns and hazards didn’t work. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
If the flasher doesn’t operate with the turn signal switch operated it could be that there is no power to operate the relay or no earth signal to say to turn the relay on and off.
The following is based on the circuit provided above (your vehicle may be different)
To check if there is power you need to test for power at pin 1 of the flasher unit with the ignition key in the On or Run position.
'''''if there is no power on pin 1 of the flasher unit''''' (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position.
''If there is power at the fuse'' then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
-
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 to a different hazard switch contact for the hazards after which they are merged and go as one to the lights)
+
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 to a different hazard switch contact for the hazards after which they are merged and go as one to the appropriate L + R and F + R lights)
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4 -on the circuit it is shown as a purple wire) or it could also be a faulty hazard switch contact individual to the turns circuit
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras where he stated that both turns and hazards didn’t work. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
If the flasher doesn’t operate with the turn signal switch operated it could be that there is no power to operate the relay or no earth signal to say to turn the relay on and off.
The following is based on the circuit provided above (your vehicle may be different)
To check if there is power you need to test for power at pin 1 of the flasher unit with the ignition key in the On or Run position.
'''''if there is no power on pin 1 of the flasher unit''''' (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position.
''If there is power at the fuse'' then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
-
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 to a different hazard switch contact for the hazards)
+
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 to a different hazard switch contact for the hazards after which they are merged and go as one to the lights)
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4 -on the circuit it is shown as a purple wire) or it could also be a faulty hazard switch contact individual to the turns circuit
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras where he stated that both turns and hazards didn’t work. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
-
If the flasher doesn’t operate it could be that there is no power to operate the relay or no earth signal to say to turn the relay on and off.
+
If the flasher doesn’t operate with the turn signal switch operated it could be that there is no power to operate the relay or no earth signal to say to turn the relay on and off.
The following is based on the circuit provided above (your vehicle may be different)
To check if there is power you need to test for power at pin 1 of the flasher unit with the ignition key in the On or Run position.
'''''if there is no power on pin 1 of the flasher unit''''' (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position.
''If there is power at the fuse'' then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 to a different hazard switch contact for the hazards)
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4 -on the circuit it is shown as a purple wire) or it could also be a faulty hazard switch contact individual to the turns circuit
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras where he stated that both turns and hazards didn’t work. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
If the flasher doesn’t operate it could be that there is no power to operate the relay or no earth signal to say to turn the relay on and off.
The following is based on the circuit provided above (your vehicle may be different)
-
To check if there is power you need to test from the fuse to pin 1 of the flasher unit with the ignition key in the On or Run position.
+
To check if there is power you need to test for power at pin 1 of the flasher unit with the ignition key in the On or Run position.
'''''if there is no power on pin 1 of the flasher unit''''' (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position.
-
''If there is no power at pin 1'' then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
+
''If there is power at the fuse'' then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
-
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 for the hazards)
+
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 to a different hazard switch contact for the hazards)
-
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4 -on the circuit it is shown as a purple wire) or it could also be a faulty hazard switch contact
+
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4 -on the circuit it is shown as a purple wire) or it could also be a faulty hazard switch contact individual to the turns circuit
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras where he stated that both turns and hazards didn’t work. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
-
Looking at the circuit in my answer above (ifthis is relevant to your model vehicle), the turn signal fuse and the hazard fuse both supply power to different points in the the logic circuit in the flasher unit,which then operates the flasher relay.
+
If the flasher doesn’t operate it could be that there is no power to operate the relay or no earth signal to say to turn the relay on and off.
-
Even though the fuse looks and tests OK that doesn't mean that the power is there to operate the relay via the logic circuit from the turn fuse to pin 1 of the flasher unit. You need to check if there is power on pin 1 (with ignition key in ON or Run position) There is power on pin 2 (hazard fuse ) ALL the time.
+
The following is based on the circuit provided above (your vehicle may be different)
-
if there is no power on pin 1 of the flasher unit (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position. If there is no power at pin 1 then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
+
To check if there is power you need to test from the fuse to pin 1 of the flasher unit with the ignition key in the On or Run position.
-
The earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from the hazards switch.For the turn signals it is on pin 4 and for the hazards it is on pin 3.
+
'''''if there is no power on pin 1 of the flasher unit''''' (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position.
-
Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals (and from pin 3 for the hazards)
+
''If there is no power at pin 1'' then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
-
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4). (on the circuit it is shown as a purple wire It could also be a faulty hazard switch contact
+
'''''If there is power at pin 1 of the flasher unit''''', the earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from two different contacts in the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3. (Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals and from pin 3 for the hazards)
+
+
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4 -on the circuit it is shown as a purple wire) or it could also be a faulty hazard switch contact
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
+
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras where he stated that both turns and hazards didn’t work. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
Looking at the circuit in my answer above (if this is relevant to your model vehicle), the turn signal fuse and the hazard fuse both supply power to different points in the the logic circuit in the flasher unit, which then operates the flasher relay.
Even though the fuse looks and tests OK that doesn't mean that the power is there to operate the relay via the logic circuit from the turn fuse to pin 1 of the flasher unit. You need to check if there is power on pin 1 (with ignition key in ON or Run position) There is power on pin 2 (hazard fuse ) ALL the time.
if there is no power on pin 1 of the flasher unit (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position. If there is no power at pin 1 then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
The earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3.
Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals (and from pin 3 for the hazards)
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4). (on the circuit it is shown as a purple wire It could also be a faulty hazard switch contact
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
-
Looking at the circuit in my answer above (if this is relevant to your model vehicle), the turn signal fuse and the hazard fuse both supply power to the logic circuit in the flasher unit which then operates the flasher relay.
+
Looking at the circuit in my answer above (if this is relevant to your model vehicle), the turn signal fuse and the hazard fuse both supply power to different points in the the logic circuit in the flasher unit, which then operates the flasher relay.
Even though the fuse looks and tests OK that doesn't mean that the power is there to operate the relay via the logic circuit from the turn fuse to pin 1 of the flasher unit. You need to check if there is power on pin 1 (with ignition key in ON or Run position) There is power on pin 2 (hazard fuse ) ALL the time.
if there is no power on pin 1 of the flasher unit (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position. If there is no power at pin 1 then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
-
-
The earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3.
Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals (and from pin 3 for the hazards)
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4). (on the circuit it is shown as a purple wire It could also be a faulty hazard switch contact
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
Looking at the circuit in my answer above (if this is relevant to your model vehicle), the turn signal fuse and the hazard fuse both supply power to the logic circuit in the flasher unit which then operates the flasher relay.
Even though the fuse looks and tests OK that doesn't mean that the power is there to operate the relay via the logic circuit from the turn fuse to pin 1 of the flasher unit. You need to check if there is power on pin 1 (with ignition key in ON or Run position) There is power on pin 2 (hazard fuse ) ALL the time.
if there is no power on pin 1 of the flasher unit (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position. If there is no power at pin 1 then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
-
Also power to the lamps is fed down the same wire from pin 4 for the turn signals (and from pin 3 for the hazards)
+
The earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3.
+
+
Also power to the lamps is fed down the same wire from pin 4 to the hazards switch for the turn signals (and from pin 3 for the hazards)
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4). (on the circuit it is shown as a purple wire It could also be a faulty hazard switch contact
Hi @granth12 ,
My answer above regarding the ground was in relation to a specific comment/question asked by Len Perras. I also stated that since there are different grounds for front and rear it would be unusual for both sets F + R not to work.
Regarding your problem.
Have you checked the hazards switch? The turn signals operate through the hazards switch when it's in the normal position. Try operating/releasing it a few times and check if the turn signals then work
Does the flasher relay operate when the turn signal switch is operated?
Looking at the circuit in my answer above (if this is relevant to your model vehicle), the turn signal fuse and the hazard fuse both supply power to the logic circuit in the flasher unit which then operates the flasher relay.
Even though the fuse looks and tests OK that doesn't mean that the power is there to operate the relay via the logic circuit from the turn fuse to pin 1 of the flasher unit. You need to check if there is power on pin 1 (with ignition key in ON or Run position) There is power on pin 2 (hazard fuse ) ALL the time.
if there is no power on pin 1 of the flasher unit (with the ignition key turned on), first check if there is power at the fuse. It may be faulty wiring from the ignition relay to the fuse position. If there is no power at pin 1 then it may be a faulty connection on the back of the fuse block for that fuse, or a faulty connection on pin 1 of the flasher unit or anywhere in between. You could also check that the connectors that hold the turn fuse in the fuse block are OK and have not either "burnt away" (use a strong light and a magnifying glass to check) or have enough tension on the fuse.
Also power to the lamps is fed down the same wire from pin 4 for the turn signals (and from pin 3 for the hazards)
The earth that "tells" the logic circuit that the relay "needs" to be operated comes from the lights and it is the same earth for both the turn signals and the hazards BUT it appears at two different connectors in the flasher unit coming from the hazards switch. For the turn signals it is on pin 4 and for the hazards it is on pin 3.
So it could be a faulty connection or wire between the hazard switch (E terminal) and the flasher unit (pin 4). (on the circuit it is shown as a purple wire It could also be a faulty hazard switch contact
Hopefully this is of some help.