I just recently bought a 2001 Honda Civic Ex and I have gotten everything repaired and working except for the turn signals. The hazards work and operate just fine but these turn signals are killing me. I have replaced all the fuses, the relay and the switch itself. I have double checked all the wiring and nothing seems to work. Help! This is my daily driver and it’d be nice to not seem like an *** on the road. Thank you!!

 

The cause may be due to the hazard warning switch.

When the hazard warning switch is in the "Off" position, power suppose to go through terminal pin no. 1 to terminal pin 2 of the hazard switch to allow power through to the flasher relay. If power doesn't go through those hazard switch terminal pins, then the turn signals are not going to work.

 

Thank you for the quick response! Quick question though, do you think it would be easier to just replace the switch or test the pins and go from there?

 

Thank you for the help it looks like you are right and it is pin 1 on the hazard switch. The wire had come loose. Only issue is I can’t find where to connect the wire. Could you help me with that?

 

Under-dash Fuse No. 19 (7.5A) provides power via a Yel/Blk wire to pin 1 of the hazard switch. That fuse has power when the ignition switch is in the ON or START positions. You just need to re-connect the loose wire to a power source that has power when the ignition is in ON or START. The Yel/Blk wire connects to terminal no. 7 of the light green Connector L at the back of the under-dash fuse box.







Probably easier to just use something like a Littelfuse Add-A-Circuit and plug into the front of the fuse box.

 

Thank you for that pin diagram it helped out a lot! It looks like it’s not pin 1 but pin 5. Still can’t find the wire or where to connect it to. Should I just connect pin 5 to pin 6 or is there something more I should do?

 

The connector terminal I previously posted is not the hazard switch terminals. They are for the harness connector to the under-dash fuse box.

What color wire is loose at the hazard switch? Can you post photos?

 

Using the diagram above with the gray plug. This wire is pin #5, it’s not connected to anything at all and I can’t find where to connect the wire. The wire is solid red.

Thank you for all the help. I apologize for the delay. I had to replace the alternator and came across a few rounded bolts and it took me a minute.

 

If that is the red wire that goes to the hazard switch, the red wire is for the ground source to the hazard switch button light when the headlights/parking light switch is on. The red wire would not cause your turn signals to not work.

The following is the hazard switch connector wire terminals.




Try this. Disconnect the connector to the hazard warning switch. Use a small paper clip or wire and jump connector pin 1 cavity (Yel/Blk wire) to pin 2 cavity (Grn/Wht wire). Turn the ignition switch to the ON position (car doesn't need to be running). Switch on the turn signal signals. Does it signal outside of the car? (The inside dash turn signal indicators will not flash though since the hazard switch is disconnected.)

 

So with that red wire I should be okay to connect it to the frame of the car just to ground it out?

I jumped the pins with a paper clip and the blinkers didn’t work.

 

1. First, you want to make sure that is the red wire that goes to terminal no. 5 of the hazard warning switch. You can trace it or test for continuity between the ends of the wire with a multi-meter. Afterwards, you can ground it to chassis ground or splice into one of the other existing red wires for other interior illumination.

2. With the ignition switch in ON or START, measure/read the voltage at terminal no. 1 cavity (Yel/Blk wire).

 

Grounding out that red wire brought my control panel lights for the HVAC back on so thank you for that.

I tested pin #1 and it was reading at 11.4Volts.

Thank you again for all all the help!!

 

Plug the hazard warning switch back in.

Refer to the images of the two different connectors in my previous posts.

1. At the connector to the hazard switch, back-probe terminal no. 2 (Grn/Wht wire) with the ignition switch in the ON position. Is there power at terminal no. 2? There should be power there with the hazard switch plug in. (Do not press the hazard switch ON).

Backprobing is either using a backprobe set or using a thin needle or something and making contact with the metal terminal of the connector without piercing the wire in the back of the still connected connector. Care must be taken to ensure that the wiring does not get damaged. You can use something like a T pin, available at Walmart, etc., and backprobe. These pictures are just to give a picture of the concept of backprobing without piercing any wires.







2. If there is power at terminal no. 2 of the hazard switch connector, then move on to check if power is going to Connector L, terminal no. 1 (Grn/Wht wire) the under-dash fuse box. Ignition switch should be in ON position. -- You can backprobe here too, or just unplug this connector and test directly from the cavity side.

 

I tested pin #2 on the hazard switch and it is getting power. I have been attempting to get to connecter L on the back of the fuse box but it’s going to require me pulling the whole thing out because of the small space. When and if I get to it what would be the next steps or is there another way to test this without me pulling the entire fuse box?

 

If you want to skip testing for power at the wire going into the fuse box, then test for power after it goes through the fuse box and the turn signal relay-->...

At the 16-gray connector to the combination light switch at the steering column, test for power on the Blk/Red wire (terminal no. 10) with the ignition switch in the ON position.

 

Wow