Uplander AWD V6-35L VIN 8 (2005) | Body Control Module: Testing and Inspection
Step 10 - Step 11
Power Mode Mismatch
POWER MODE MISMATCH
CIRCUIT DESCRIPTION
Normal vehicle serial data communications and module operations will not begin until the system power mode has been identified. Discrete wires
from the ignition switch contacts are monitored by a module which acts as the power mode master (PMM) in order to determine the correct power
mode. The module which is the PMM communicates the system power mode to all modules on the serial data lines. Refer to Body Control System
Description and Operation to identify which module is the PMM and the applicable power mode look up table.
TEST DESCRIPTION
