Test C: Traction Off Indicator Always On (Grand PRIX)

Perform DIAGNOSTIC SYSTEM CHECK under DIAGNOSIS & TESTING. Go to next step.
Turn ignition on, engine off. Using scan tool, enter ABS/TCS data list. While monitoring TRAC on/off switch status, press and release TRAC on/off switch. If switch status changes as switch is pressed and released, go to next step. If switch status does not change as switch is pressed and released, go to step 8 .
Turn ignition off. Disconnect EBCM connector. Turn ignition on, engine off. If TRAC indicator turns off, go to next step. If TRAC indicator remains illuminated, go to step 5 .
Replace EBCM. See ELECTRONIC BRAKE CONTROL MODULE under REMOVAL & INSTALLATION. After repairs, go to step 10 .
Turn ignition off. Disconnect EBCM connector. Install Universal Pinout Box (J 39700) and Cable Adapter (J 39700-530) to EBCM harness connector only. Disconnect driver information display or trip calculator connector. Using DVOM, measure resistance between universal pinout box terminals No. 15 (Black/Whiter wire) and No. 18 (Purple/White wire). If resistance is infinite, go to step 7 . If resistance is not infinite, go to next step.
Repair short to ground in Purple/White wire between instrument cluster and EBCM. After repairs, go to step 10 .
Diagnose driver information display or trip calculator. See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. After repairs, go to step 10 .
Turn ignition off. Disconnect EBCM connector. Install universal pinout box and cable adapter to EBCM harness connector only. Using DVOM, measure resistance between universal pinout box terminals No. 17 (Brown/White wire) and No. 15 (Black/White wire). If resistance is infinite, go to step 4 . If resistance is not infinite, go to next step.
Repair short to ground in Brown/White wire between TRAC on/off switch and EBCM. Also, check for a short in TRAC on/off switch. After repairs, go to next step.
Operate system to verify repair.