Code I032 (4.6L) Loss Of ABS/TCS Data
- If this code is set, IPC is not able to exchange data with EBTCM. While this failure is present, no Electronic Brake & Traction Control Module (EBTCM) diagnostic information will be available for display, BRAKE warning light will be illuminated and IPC will display ANTILOCK DISABLED and TRACTION DISABLED messages. When this code is set by itself, problem will be one of following:
- An open in Tan wire circuit between EBTCM and DERM and a second open between RSS and EBTCM.
- An open or short in EBTCM power or ground circuits.
- A faulty EBTCM. EBTCM is located in center of electronics bay, mounted on "X" brace. DERM is located below left side of instrument panel, above brake pedal. DERM has Yellow connector and harness.
- Turn ignition on. Enter self-diagnostics. Record any trouble codes. See ENTERING SELF-DIAGNOSTICS
. If Codes I032 and I034 are set, check ground connection at G102 located near rear valve cover on right side of engine. If Codes I032, I033, I034, I037 and I039 are set, go to MULTIPLE DATA COMMUNICATION CODES (4.6L).
- If Code I032 is set by itself, check if code is current or history. Is Code I032 is current, go to next step. If Code I032 is history, check ignition feed, ground circuit and data circuits for intermittent faults.
- Disconnect EBTCM. Using a DVOM, measure voltage at EBTCM connector terminal No. 31 (Tan wire). See Fig 1
. If voltage is greater than 3 volts, go to next step. If voltage is less than .1 volt, repair open in Tan wire between EBTCM and DERM and between RSS module and EBTCM.
- Using a DVOM, measure voltage between EBTCM connector terminals No. 1 (Orange wire) and No. 20 (Black wire). See Fig 1
. If system voltage is present, go to next step. If low voltage is present, check fuse A1 in trunk. If fuse is blown, replace fuse and repair short to ground in Orange wire to EBTCM terminal No. 1. If fuse is okay, check for open in Tan wire. If wire is okay, replace EBTCM.
- Using a DVOM, measure resistance between ground and EBTCM connector terminals No. 20 and No. 34. Repair wire(s) if resistance is greater than one ohm. If resistance is less than one ohm, check for terminal damage at connector. If connectors are okay, replace EBTCM.
Courtesy of GENERAL MOTORS CORP.