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Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1084 (Body Control System) >> Diagnostic Information and Procedures >> DTC B1440: Power Mode Master Input Circuits Mismatch >> Conditions for Setting the DTC
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Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

One of the three monitored ignition switch circuits has malfunctioned. Refer to the following example:

Incorrect Power Mode Inputs

Ignition Switch Position BCM Input and Scan Tool Display
Ignition 0 Ignition 1 Ignition Accessory
OFF and LOCK Inactive Active Inactive
ACC Active Inactive Inactive
ON Active Active Inactive
CRANK Inactive Active Active