Component Tests and General Diagnostics

Procedure

Note: Perform before beginning System Diagnosis

1. If both windows are inoperative, check windows Circuit Breaker 15 for open. If open check for short to ground through CKT 341.
^ Check for poor connection at C200 terminal "E11."

2. If windows move slowly, check that:
- Windows free of mechanical binding and pivot joints and tracks are properly lubed.
- Battery is fully charged.
- Ground G200 is clean and tight.

3. If the Express Down Feature does not work, but window moves down with each switch depression, check for poor connection at Express Down Module terminal "A" or open in CKT 164 from Express Down Module to S263.
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage check. Use Test Light J 34142 whenever possible. Test lights require more current than a high impedance DVM and are more useful for detecting abnormally high resistive circuits. Some test lights have high impedances and will not be as useful in detecting resistive circuits.
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.