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Ride and Handling Optimization - Ride and Handling Optimization Diagnosis and Testing Principles of Operation For a detailed description of the Terrain Response system, refer to the relevant Description and Operation section in the Ride and Handling Optimization (204-06 Ride and Handling Optimization, Description and Operation). Inspection and Verification CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor 1. Verify the customer concern. 1. 2. Visually inspect for obvious signs of mechanical or electrical damage. 2. Visual Inspection Mechanical Electrical * Tire condition, pressures, etc Fuses 3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step. 3. 4. If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index. 4. DTC Index • NOTE: If the control module/transmission is suspect and the vehicle remains under manufacturer warranty, refer to the • NOTE: Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the • NOTE: When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to three • NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests. • NOTE: Inspect connectors for signs of water ingress, and pins for damage and/or corrosion. • NOTE: If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may For a complete list of all Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section REFER to: Diagnostic Trouble Code (DTC) Index - DTC: Terrain Response Control Module (ATCM) (100-00 General Information, Description and Operation). |