Operation CHARM: Car repair manuals for everyone.

Visual Inspection

Visual Inspection

This inspection will identify malfunctions to the vehicle operating system that may affect diagnosis.

1. Vehicle modification

2. Electronic add-on items

- Air conditioning
- Generator (alternator)
- Engine turbo
- Cellular telephone
- Cruise control
- CB radio
- Linear booster
- Backup alarm signal
- Computer

3. Leaks.

4. Proper linkage adjustments.

These items, if not installed properly, will affect powertrain control module or transmission function. Pay particular attention to add-on wiring splices in the powertrain control module harness or transmission wiring harness, abnormal tire size, or axle ratio changes.