Diagnostic Routine F

Diagnostic Routine F

Diagnostic Overview

No Power in ACC - Vehicles with a Start-Stop Switch

Refer to Wiring Diagram Set 13 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

When in ACC mode, the BCM (Body Control Module) module provides a ground for the coil (control) side of the RUN/ACC relay located in the BCM (Body Control Module). The RUN/ACC relay is serviced with the BCM (Body Control Module).

The BCM (Body Control Module) also provides a ground for the coil side of the accessory delay relay located in the BCM (Body Control Module). The accessory delay relay is serviceable separately from the BCM (Body Control Module).

When the vehicle is in ACC mode, ACCESSORY POWER ACTIVE will be displayed in the message center.

To place the vehicle in ACC mode, locate the IA (Intelligent Access) key inside the vehicle and press the start/stop switch once without applying the brake pedal.

Pinpoint Test

1. VERIFY OTHER IGNITION MODES

1. With the IA (Intelligent Access) key in the vehicle, press the start/stop switch for at least one second without pressing the brake pedal.

Does the vehicle enter RUN mode?








2. CHECK THE ACCESSORY DELAY RELAY

1. Disconnect: Accessory Delay Relay.

2. Carry out the appropriate relay component test.

Does the relay pass the test?








3. VERIFY BCM (Body Control Module) FUSE 10 (10A)

1. Verify BCM (Body Control Module) fuse 10 (10A) is OK.

Is BCM (Body Control Module) fuse 10 (10A) OK?








4. CHECK FOR CORRECT BCM (Body Control Module) OPERATION

1. Disconnect and inspect all BCM (Body Control Module) connectors.

2. Repair:

- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the BCM (Body Control Module) connectors and all previously disconnected exterior system connectors. Make sure they seat and latch correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?