Test 29A - CAB Sensor Circuit

Test 29-A, Repairing CAB Sensor Circuits:

Wheel Speed Sensor Circuit:

ABS Electrical Layout:

NOTE: You must perform Test 1A, before proceeding with this test.


CAB SENSOR CIRCUITS

When Its Monitored
The test is conducted at power up. The continuity signals are tested every 5 ms for a total of 250 ms.

Set Condition
The Controller Antilock Brake (CAB) monitors all wheel speed sensor circuits for continuity. The trouble code is stored if the voltage sampled from the tests exceeds a threshold.

Possible Causes:
^ Any wheel speed sensor circuit shorted to B(+)
^ Failed CAB