Conditions

Fault symptoms
The seat cannot be operated when the front passenger door is open and the ignition is off.

Probable cause of fault
Faulty door contact or faulty lead from door contact to TWICE.

Check the wiring
Jiggle the wiring harness in several places and in various directions to detect intermittent open circuits and short circuits in the wiring harness. Watch the multimeter, diagnostic tool and test lamp during the check.

Diagnostic Procedure:

Checking the Lead