Reversing lamp switch -  - testing, removal and refitting

Manual transmission / Reversing lamp switch -  - testing, removal and refitting

Testing
1 Ensure the ignition switch is ‘OFF’.

2 Unplug the wiring harness from the reversing lamp switch at the connector. The switch is threaded into the transmission casing, at the front of the unit on 085 5 speed transmissions, and at the rear of the unit on 084 4 speed transmissions.

3 Connect the probes of a continuity tester, or multimeter set to the resistance measurement function, across the terminals of the reverse lamp switch.

4 The switch contacts are normally open, so with any gear other than reverse selected, the tester/meter should indicate an open circuit.

When reverse gear is then selected, the switch contacts should close, causing the tester/meter to indicate a short circuit.

5 If the switch appears to be constantly open or short circuit, or is intermittent in its operation, it should be renewed.

Removal
6 Ensure that the ignition switch is turned to the ‘OFF’ position.

7 Unplug the wiring harness from the reversing lamp switch at the connector.

8 Slacken the switch body using a ring spanner and withdraw it from the transmission.

Recover the sealing ring. (see illustrations).

5.8a Disconnect the wiring . . .

5.8b . . . and remove the reversing light switch (4 speed transmission shown)

Refitting
9 Refitting is a reversal of removal.