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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 885 (Wiring Systems And Power Management - Troubleshooting & Diagnosis) >> Power Mode Mismatch >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Power Mode Mismatch

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Accessory Voltage 12 1 1 -
Ignition 1 Voltage 12 1 1 -
Off/Run Crank Voltage 12 1 1 -
Ignition Key Resistor Signal 1 1 1 -
Accessory Wakeup Serial Data U18141 U0100-U0299, P0513 00 - -
Run/Crank Ignition 1 Voltage (Run/Crank Relay Coil Control) B14281 2 3 -
Battery Positive Voltage (Ignition Switch) 12 1 - -
  1. Power Mode Mismatch. Different specific symptoms may occur depending on the vehicle operating conditions when the fault occurred.
  2. Vehicle will not start and will set DTC B1370 06 in SIR.
  3. The engine will continue to run after ignition key is removed.
1 This circuit is a pass through circuit in the BCM and will cause Ign Switch fuse to open.2 This circuit/condition will cause Ign Switch fuse to open, and may cause a no start condition.
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