Conditions

Vehicle Security System. No code from VSS/TWICE

Fault symptoms
Engine will not start

Conditions
Ignition ON. Immobilizer code not received.

Diagnostic help
The immobilizer code must be programmed in TWICE after replacing TWICE, MIU or the Trionic control module and after spare parts programming of the MIU.

Checking the wiring harness. Intermittent faults may occur in connection with short circuits and open circuits. Jiggle the wiring harness at several points and in several directions to locate any problems in the wiring, including intermediate connectors. Observe the multimeter, scan tool or test lamp during the check.