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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ABS Diode: Testing and Inspection

1. Check meter fuse, bulb and wiring harness.
2. Check wiring harness between warning light and control unit or hydraulic unit.
3. Disconnect hydraulic unit 0-02 connector, then check continuity of terminals in Fig. 140.

Fig. 140 ABS Diode Continuity Inspection: