Test 9A - No Response From Anti-Lock Brake Controller Module
NOTE:
For connector terminal identification see CONNECTOR IDENTIFICATION
. For wiring diagrams, see WIRING DIAGRAMS
. Perform VERIFICATION TEST VER-1A
after each repair.
CAUTION:
Always turn ignition off prior to disconnecting any module connector.
- Turn ignition off. Disconnect anti-lock brake controller module connector. Anti-lock brake controller module is located under left front of vehicle, behind transaxle. Turn ignition on. Using an external voltmeter, measure voltage between ground and anti-lock brake controller module connector terminal No. 23 (White wire). If voltage is 10 volts or less, repair open White wire. If voltage is more than 10 volts, go to next step.
- Measure voltage between ground and anti-lock brake controller module connector terminal No. 25 (Red/Dark Green wire). If voltage is 10 volts or less, repair open Red/Dark Green wire. If voltage is more than 10 volts, go to next step.
- Turn ignition off. Using an external ohmmeter, measure resistance between anti-lock brake controller module connector terminal No. 24 (Black wire) and ground. If resistance is 10 ohms or more, repair open Black wire. If resistance is less than 10 ohms, go to next step.
- Connect jumper wire between ground and anti-lock brake controller module connector terminal No. 20 (Violet/Brown wire). Turn ignition on. Using scan tool, select BODY, BODY COMPUTER, then SYSTEM TEST. Perform CCD BUS test. If scan tool does not display BUS SHORT TO GROUND, repair open Violet/Brown wire. If scan tool displays BUS SHORT TO GROUND, go to next step.
- Move jumper wire to anti-lock brake controller module connector terminal No. 19 (White/Black wire). Perform CCD BUS test. If scan tool does not display BUS SHORT TO GROUND, repair open White/Black wire. If scan tool displays BUS SHORT TO GROUND, replace anti-lock brake controller module.