Checking the wire and handbrake contact
Check and measure handbrake switch function.
HINT: Handbrake pin 1 is only grounded when handbrake is on (lamp on).
Check and measure wire between combined instrument 6 and handbrake contact 1 for a short circuit to ground as described in Short-circuit to ground, permanent faults .
Additional information:
- To connect the test box, see Connecting the Driver Information Module (DIM) test box .