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Steering - TCS/DSC Warning Light ON with DTC C1956

J

JustROLLIN

Guest
Bulletin No: 09-004/08

Last Issued: 01/22/2008

Subject:
TCS / DSC WARNING LIGHT ON WITH DTC C1956

APPLICABLE MODEL(S)/VINs
2006-2007 Mazdaspeed6 vehicles with VINs lower than JM1GG****7*110516 (produced before June 6, 2007)

DESCRIPTION

Some vehicles may experience a TCS/DSC warning light illumination with DTC C1956 (Steering Angle Sensor) stored in memory.

Depending on the size variation in the production of related combination switch parts on the steering shaft, steering angle sensor parts may come in contact with each other causing debris to attach to the steering angle sensor. The debris can cause abnormal signals resulting in a TCS/DSC warning light illumination.

The steering angle sensor assembly in the combination switch body has been modified to avoid interference. Customers having this concern should have their vehicle repaired using the following repair procedure.

REPAIR PROCEDURE

1. Verify customer concern.

2. Record customer's preset radio stations, then disconnect negative battery cable.

3. Replace combination switch body with a modified part according to Workshop Manual (section 09-18 COMBINATION SWITCH REMOVAL/INSTALLATION).

4. Reconnect negative battery cable, then re-enter customer's preset radio stations.

5. Proceed to "Power Window Initialization Procedure" to restore "anti-pinch" and auto open/close" window features before returning vehicle to customer or dealer inventory.


POWER WINDOW INITIALIZATION PROCEDURE

1. Turn ignition to ON position.

2. From driver's seat ensure window lockout switch is NOT depressed.

3. Press window switch down to fully open door window.

4. Pull window switch up to fully close door window; hold switch up for two (2) seconds; release switch.

5. Move to front passenger seat and repeat Steps 3 - 4 on passenger window switch.

6. Move to rear seat and repeat Steps 3 - 4 on both rear window switches.

7. Verify proper window operation using each door switch.
 
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