• | 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. |
The internal fault detection is handled inside the control module. No external circuits are involved.
The module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range.
The module has detected an internal malfunction.
The module refuses all additional inputs.
• | A current DTC clears when the malfunction is no longer present. |
• | A history DTC clears when the module ignition cycle counter reaches the reset threshold of 40, without a repeat of the malfunction. |
• | This DTC may be stored as a history DTC without affecting the operation of the module. |
• | If stored only as a history DTC and not retrieved as a current DTC, do not replace the module. |
• | If this DTC is retrieved as both a current and history DTC, replace the module that set the DTC. |
Control Module References for scan tool information
Perform the Diagnostic Repair Verification after completing the repair.
Air Conditioning Compressor Replacement for module replacement, setup, and programming