Driving Pattern
- Reset the BCM module. (Disconnect the 12 V battery terminal once and reconnect it.)
- Start the engine, and hold the engine speed to between 3,500 - 4,000 rpm in Park or neutral.
- Visually confirm that the IPU module fan is running.
- If you have difficulty duplicating the DTC, retest after turning off electrical components such as the audio system and A/C, and try a different gear position.