Test 29A: Cab Sensor Circuits
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION
. For wiring diagram, see WIRING DIAGRAM
.
- Inspect each Wheel Speed Sensor (WSS) connectors for corrosion or water contamination. Repair connectors as necessary. Perform TEST VER-1A . If connectors are okay, go to next step.
- Turn ignition off. Disconnect Controller Anti-Lock Brake (CAB) 60-pin connector. Inspect, clean and repair connector as necessary. Perform TEST VER-1A . If connector is okay, go to next step.
- Turn ignition on. Using scan tool in voltmeter mode, check voltage on CAB connector terminals No. 1, 2, 3, 4, 6, 7, 8 and 9. See CONTROLLER ANTI-LOCK BRAKE (CAB) CONNECTOR WSS CIRCUIT ID table under TEST 27B. If voltage is more than one volt on any circuit, repair short to battery voltage in appropriate wire. Perform TEST VER-1A . If voltage is less than one volt on all circuits, perform TEST 20A .