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 checked and/or the donor vehicle

NOTE:

If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the warranty policy and procedures manual, or determine if any prior approval program is in operation, prior to the installation of a new module/component
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests

Verify the customer concern

Visually inspect for obvious signs of mechanical or electrical damage

VISUAL INSPECTION

MECHANICAL	ELECTRICAL
Roof opening panel glass assembly Roof opening panel glass seal Frame assembly Sunblind Deflector Access panel Roof opening panel cables Drain tube(s)	Fuses Battery junction box Body control module Wiring harness Loose or corroded connector(s) Roof opening panel motor and control module Roof opening panel switch

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
If the cause is not visually evident, verify the symptom and refer to the symptom chart, alternatively check for diagnostic trouble codes (DTCs) and refer to the DTC Index.