• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
RAP Relay Coil Control | B1475 00 | 1 | 1 | -- |
1. Retained Accessory Power (RAP) Malfunction |
The body control module (BCM) controls the RUN/ACCY relay through the rap relay coil supply voltage circuit by applying voltage to the coil side of the relay. The RUN/ACCY relay is a PCB relay and is energized when any of the following conditions are true:
• | Ignition switch is in ACC or ON. |
• | The vehicle was remote started. |
• | The vehicle is in RAP mode. |
• | The system voltage is between 9-16 volts. |
• | The DTC can only set when the output is actively being requested by the module. |
The DTC will set only when the module requests the output and there is a short to ground in the rap relay coil supply voltage circuit.
The module output driver will be shut down and not supply voltage to the circuit.
• | The current DTC will clear when the module request for the output is removed or the malfunction is no longer present. |
• | A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction. |
The RUN/ACCY relay is a PCB relay and can only be replaced with the underhood fuse block.
Retained Accessory Power (RAP) Description and Operation
⇒ | If less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the underhood fuse block. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for module replacement, setup, and programming |