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

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Pinpoint Tests

PINPOINT TEST A: THE CLOCK OPERATION IS ERRATIC/INOPERATIVE

Normal Operation
The clock receives battery voltage from the smart junction box (SJB) through circuit SBP14 (BN/RD). Ground for the clock is supplied through circuit GD111 (BK/BU).

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Clock


A1:






A1-A2: