F4 Check For Open Circuit

- Ignition switch OFF.

- Disconnect 4-pin and 15-pin connectors at ABS unit.

- Jump pin 1 circuit 603 (DG) of 15-pin connector to ground.
- Ignition switch ON.

- Does ABS indicator illuminate?

Connector:

Pin Number Circuit Circuit Function

1 603 (DG) Anti-Lock Indicator Output
2 836 (O/W) ABS Diagnostic Connector
3 Not Used
4 521 (T/O) Left Front Brake Sensor
5 496 (O) Left Rear Brake Sensor Ground
6 494 (T/LG) Right Rear Brake Sensor Ground
7 492 (BR) Right Rear Brake Sensor
8 514 (Y/R) Right Front Brake Sensor
9 511 (LG) Brake On/Off (BOO) Switch Input
10 Not Used
11 Not Used
12 522 (T/LB) Left Front Brake Sensor Ground
13 499 (GN/LB) Left Rear Brake Sensor
14 516 (Y/BK) Right Front Brake Sensor Ground
15 Not Used

YES -- Go to F9. F9 Check ABS Control Module Ground

NO -- Go to F5. F5 Check Power Supply to Cluster