Test Description

NOTE: Test numbers refer to numbers on diagnostic chart.

If QDM related code is stored, diagnose that code first. Repair made to related code will repair Code P1650 also.
This test will determine which circuit is out of specification.
Determines if problem is circuit or component.
As factory installed PCM is protected with an internal circuit breaker, it is highly unlikely that PCM needs to be replaced.

Fig 1: Code P1650 Schematic (3.8L) QDM No. 2

Fig 2: Code P1650 Diagnostic Flow Chart (3.8L) QDM No. 2