G531320t43: CHECK THE PRIMARY APPLY SWITCH CIRCUIT RESISTANCE
- Key off.
- Electric parking brake module connector 1 (CR50) disconnected.
- Electric parking brake module connector 2 (CR32) disconnected.
- Key on, engine off.
- Measure the resistance between:CONNECTOR REFERENCE CHART
CR50 connector, harness side CR32 connector, harness side Electric parking brake switch release 1 - signal - Pin 10 Electric parking brake switch - switch return - Pin 06 - Is the resistance between 595 ohms - 611 ohms?
- Yes: An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other physical damage to the harness. If no fault is found in the circuit, suspect the following component(s): - EPB module - EPB module connector, CR50
- No: INSTALL a new EPB switch.