Vauxhall Workshop Service and Repair Manuals

Note:       If the P/N selector lever is switched to R-D-2-1 the idle speed in the program is decreased by approx. 40 rpm.

This should prevent the vehicle (AT) from "creeping" too much.

Before trouble-shooting is started, ensure that the vehicle is correctly coded for its version (MT or AT)

- See table 3-

Trouble-shooting:                                      Nominal Value:                       Cause of Fault:

(If nominal value is not attained)

· Remove plug of P/N switch

X 37 (X 30 for Senator)                                                                                                           · Lead interruptions from

- Control unit Ter. 42 to P/N switch

Ignition ON                                                                                                                                  - P/N switch to ground

Using voltmeter, check voltage

at P/N switch plug Ter. H                                        > 10 V

If nominal values are attained          · P/N switch defective

· Control unit defective