Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Flow of Diagnosis

1. Verify the customer concern by operating the system in question.
2. Visually inspect for obvious signs of electrical damage.

Visual Inspection Chart

Electrical
^ Damaged wiring harness
^ Loose or corroded connections
^ Electronic Crash Sensor (ECS) module
^ Anti-lock brake control module
^ Remote Anti-Theft Personality (RAP) module
^ Powertrain Control Module (PCM)

3. If the concern remains after the inspection, connect New Generation Star (NGS) Tester to the Data Link Connector (DLC) located beneath the instrument panel and select the vehicle to be tested from NGS Tester menu. If the NGS does not communicate with the vehicle:
^ Check that the program card is properly installed.
^ Check the connections to the vehicle.
^ Check the ignition switch position.

If the NGS Tester still does not communicate with the vehicle, GO to Pinpoint Test F. F: No Module/Network Communication

4. GO to Pinpoint Test PC. Pinpoint Test PC: Data Link Diagnostics Network Test