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How to repair DTC codes C1515 and C1525 Hard to steer?

Tiny
SHWEMAN
  • MEMBER
  • 2004 TOYOTA 4RUNNER
  • 78,000 MILES
When I the turn the steering it feels very heavy. I had it scanned and the codes I received were DTC codes C1515 and C1525. Dtc codes C1515 and C1525 is sure. This mean DTC, C1515 is the torque sensor zero point adjustment undone and DTC, C1525 is the rotation angle sensor initialization undone. How to repair procedure?
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Friday, December 30th, 2011 AT 3:22 PM

8 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The steering angle sensor must be replaced it sounds like it is has gone bad. The steering sensor (S11 on picture) or yaw sensor (Y1).

You must undo the air bag and the steering wheel and the turn signal switch. Here are some guides to show you what you are in for when doing the repair.

https://www.2carpros.com/articles/air-bag-removal-steering-wheel

and

https://www.2carpros.com/articles/steering-wheel-removal

and

https://www.2carpros.com/articles/turn-signal-switch-replacement

Please let us know what happens.

Cheers
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Sunday, January 1st, 2012 AT 5:22 PM
Tiny
SILAMBU
  • MEMBER
  • 1 POST
Great guides, it fixed the problem. I love this website 2CarPros is the best!
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Monday, April 10th, 2017 AT 10:03 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Nice work, we are here to help, please use 2CarPros anytime.

Cheers, Ken
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Tuesday, July 25th, 2017 AT 6:55 PM
Tiny
DANIEL CHIN JR
  • MEMBER
  • 3 POSTS
I have the same problem after disconnecting battery. Replaced steering angle sensor and problem still exists.
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Wednesday, October 31st, 2018 AT 1:13 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
It sounds like you popped a fuse (one of 7), can you check the fuses for power by following this guide and here is the fuse panel diagrams and the steering sensor wiring diagrams so you can see how they system works and the fuses you need to check.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Cheers, Ken

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Thursday, November 1st, 2018 AT 12:43 PM
Tiny
DANIEL CHIN JR
  • MEMBER
  • 3 POSTS
All fuses are good. I have power to eps relay and fuses also.
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Thursday, November 1st, 2018 AT 1:36 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
It sounds like the skid control ECU went you, but to be sure let's check the power and grounds for the system. Here is a guide to help us use the wiring diagrams above to run the test. I would try to find a used unit and plug it in to see what happens.

https://www.2carpros.com/articles/how-to-check-wiring

Here is the location of the skid control ECU.
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Friday, November 2nd, 2018 AT 11:32 AM

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