C1361 code Toyota Corolla 2010

[tookien]

Hi,

This is for a Corolla 2010 1.8.

I have ABS, TC and VSC(off) lights on the dash for a while now, and I've recently decided to start testing things.

Scan tool gives me C1361 code. No other codes.
Short circuit in motor fail safe relay

Two recommended fixes are:
REPLACE ABS PUMP AND MOTOR RELAY
REPLACE ABS PUMP AND MOTOR WIRING HARNESS

A few things I've already checked

- Battery and charging system
- checked the STOP fuse already as this is used by the ABS module to initiate, and it's fine along with the brake lights.
- checked the 2 positive and 2 ground terminals at the ABS module harness, all tested fine.
- cleaned all ground connections and terminals on alternator, battery terminals etc..

The battery is a little iffy to me. I did a simple load test with the high beams, and it does seem to hold charge. Drops a little bit overtime but not too much immediately.
However, there are times where the battery does seem to not hold charge when the car is off, and goes below 12 volts.
Overall, starting the car not an issue. I may just replace the battery anyways, but I still don't think it would be causing the C1361 code.

I was doing some frontend work and I replaced the front ABS sensors at the same time and still had the issue.

However, I did not test/replace the rear ABS sensors/lines yet, which I think should be my next step.

The ABS fuses/relays seem to be fused into some white box so not sure how to test those, however given that the ABS module does get power through the wiring harness, I don't think that's the problem.

There are recommendations that the ABS module internally itself is a problem, which I refuse to believe at this point. The car is also low mileage and it doesn't seem to be a common issue.

Would appreciate any recommendations or ideas.

 

[FowVay]

Here's the first step in the manual. Let me know if you want me to post up the rest of the procedures -

 

[tookien]

Here's the first step in the manual. Let me know if you want me to post up the rest of the procedures -

View attachment 251664


View attachment 251665

Thanks, I'm currently checking that motor fail-safe relay

 

[97prizm]

Hi,

This is for a Corolla 2010 1.8.

I have ABS, TC and VSC(off) lights on the dash for a while now, and I've recently decided to start testing things.

Scan tool gives me C1361 code. No other codes.
Short circuit in motor fail safe relay

Two recommended fixes are:
REPLACE ABS PUMP AND MOTOR RELAY
REPLACE ABS PUMP AND MOTOR WIRING HARNESS

A few things I've already checked

- Battery and charging system
- checked the STOP fuse already as this is used by the ABS module to initiate, and it's fine along with the brake lights.
- checked the 2 positive and 2 ground terminals at the ABS module harness, all tested fine.
- cleaned all ground connections and terminals on alternator, battery terminals etc..

The battery is a little iffy to me. I did a simple load test with the high beams, and it does seem to hold charge. Drops a little bit overtime but not too much immediately.
However, there are times where the battery does seem to not hold charge when the car is off, and goes below 12 volts.
Overall, starting the car not an issue. I may just replace the battery anyways, but I still don't think it would be causing the C1361 code.

I was doing some frontend work and I replaced the front ABS sensors at the same time and still had the issue.

However, I did not test/replace the rear ABS sensors/lines yet, which I think should be my next step.

The ABS fuses/relays seem to be fused into some white box so not sure how to test those, however given that the ABS module does get power through the wiring harness, I don't think that's the problem.

There are recommendations that the ABS module internally itself is a problem, which I refuse to believe at this point. The car is also low mileage and it doesn't seem to be a common issue.

Would appreciate any recommendations or ideas.

If the battery is borderline it may have a bad cell that can trip all sorts of sensors. I saw this while working at a few dealerships. Had a lady buy a Ford C max when I was at an independent dealership. She kept having random dash lights come on, ABS, traction control, etc. She was getting really frustrated. I finally jumped in after telling the owner just change the battery out for a new one. New battery, got rid of all of the dash lights. The old battery looked okay and wasn't particularly old. This screams a bad cell causing issues.

 

[tookien]

If the battery is borderline it may have a bad cell that can trip all sorts of sensors. I saw this while working at a few dealerships. Had a lady buy a Ford C max when I was at an independent dealership. She kept having random dash lights come on, ABS, traction control, etc. She was getting really frustrated. I finally jumped in after telling the owner just change the battery out for a new one. New battery, got rid of all of the dash lights. The old battery looked okay and wasn't particularly old. This screams a bad cell causing issues.

I'm picking up a battery tomorrow. The battery always kind of felt weak under load even though I can start the car without issue. I don't drive it often, it would sit for days or sometimes weeks without driving, and this is probably why.

But it could still be something with the circuit or the ABS module itself, the motor safe relay as above or something related.
I thought maybe if I clear the codes the lights won't show during idle. but there is an initial immediate check on ignition for the motor safe relay, and maybe also the ECU may have some residual storage.

 

[tookien]

Here's the first step in the manual. Let me know if you want me to post up the rest of the procedures -

View attachment 251664


View attachment 251665

No way to actually directly test that ABS No 1 and No 3 fuse hmm....
They are enclosed in a white box with a clear cover, part of a high-amp fuse block
would require disassembling the entire fuse box.

anyways don't think that fuse is the problem given that I do get power going to the ABS module harness.

Also the motor safe relay is inside the module.

I'll confirm the rear ABS sensors and change the battery as it needs to be replaced anyways.


If that doesn't do it I'll be taking apart the module to see what's wrong.