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C1277/u1040

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Old May 7, 2013 | 06:57 PM
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From: Roseburg Oregon
Default C1277/u1040

C1277-Requested Torque Signal Circuit Malfuncation (CKT).

U1040-loss of Communication with TCS.

What,Where, and can I repair or replace?

Thanks
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Old May 7, 2013 | 07:53 PM
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Let me know if you get it figured out!! Same issues with my '00 and have a sneaky suspicion it the ABS Module...
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Old May 8, 2013 | 01:51 PM
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Originally Posted by Wahoo12
C1277-Requested Torque Signal Circuit Malfuncation (CKT).

U1040-loss of Communication with TCS.

What,Where, and can I repair or replace?

Thanks
Start with checking the connector to the ebcm. Pull it off and check for bent pins, pulled wires, or corrosion. It gets harder after this and you will need a meter to check voltages and resistance. If you have a 2001-04 parts are available if needed.
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Old May 8, 2013 | 04:21 PM
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Default C1277/u1040

I will start checking connections. This is the unit on the drivers side under the power steering unit? There are hyd lines on top.

What is strange is I can drive 200 miles or drive 10 miles no DTC flashing warnings. Shut the car off,restart then the DTC starts flashing service active handling system.

I do thank you for the help.

Wahoo
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Old May 10, 2013 | 03:58 PM
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From: Roseburg Oregon
Default C1277/u1040

I called Brandon at ABSFixer this morning for any ideas.His comment was remove the connector from EBTCM.Spray with electrical contact cleaner. Also,do the same with ground 101.

After this was completed I went for a 40 mile test. After returning I checked for codes with the engine running,NO CODES. Only time will tell if my good luck continues.


Brandon did say the unit with C1277 is not repairable. He sells repaired units for $300.

As Mr.Bill says ck grounds and connectors.

Good luck to anyone with these codes.


Wahoo
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Old May 10, 2013 | 04:23 PM
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I have a 2003 with 38,000 miles on it. Mint condition, one day I recieved those 2 exact same codes.Did a little research on here and came across the ignition switch cleaning rebuild thread. Took out the ignition switch and sure enough 3 burnt contacts. Cleaned it up put it back together and the codes disappeared and have not returned.
It's worth looking into, pretty easy to clean the ignition switch. Like I said I had the exact same 2 codes as you.
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