The IPC receives a class 2 message requesting illumination from the DIM.
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There is a powertrain related code present.
The IPC receives a class 2 message requesting illumination from the PCM.
Dash Integration Module (DIM)
The various DIM input and output circuits are described in the corresponding functional areas as indicated on the DIM electrical schematics.
The DIM functions include the following:
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Class 2 communication requiring DIM interaction.
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Control of exterior lamps.
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Control of front fog lights.
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Control of the headlights.
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Headlamps on with wiper input.
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Hood ajar switch input w/export.
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Horn relay control.
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Interior lamps incandescent dimming.
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Low side temperature for HVAC compressor.
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Power moding control over Class 2 serial data circuit.
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Reverse lockout solenoid control.
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Steering wheel controls input.
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Storage of the clock settings and, sending a message out on the class 2 serial data circuit in response to requests from other modules.
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the DIM. The PMM receives 4 signals from the ignition switch.
To determine the correct power mode the PMM uses the following circuits:
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Accessory voltage
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Ignition 1 voltage
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Ignition 3 voltage
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Off/Run/Crank voltage
Your having a module problem , need to have it checked for DTC'S . Dealer only one for that !
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