Vauxhall Workshop Service and Repair Manuals

Before trouble-shooting, it should be established whether the exhaust coding is correct for the relevant transmission type.

A more detailed explanation can be found in section 5.2.3.

Trouble-shooting:                                 Nominal Value:                       Cause of Fault:

(If nominal value is not attained)

MT vehicles

· Remove control unit plug                                                                                                · Incorrect wiring harness

cable cover                                                                                                                         · Lead interruption between control

unit Ter. 42 and ground

· Measure voltage                                                                                                                · Control unit defective

between Ter. 21 and Ter. 42

against ground Ter. 14

using multimeter

Ignition ON                                                            Ter. 42 occupied,      0 V

Ter. 21 unoccupied, 5 V

AT vehicles

· Remove control unit plug

cable cover

· Measure voltage                                                 Ter. 21 occupied, 0 V                        · Incorrect wiring harness

between Ter. 21 and Ter. 42                                                                                           · Lead interruption between control

against ground Ter. 14                                      Ter. 42 occupied, 0 V                           unit Ter. 21 and ground

using multimeter                                                  (to P/N switch Ter. H)                       · Control unit defective

Ignition ON