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

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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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Scan Tool Testing and Procedures




ABS HU/CM INSPECTION

1. Disconnect the ABS HU/CM connector. Service and Repair

2. Connect the negative battery cable. Removal and Replacement

3. Attach the tester lead to the ABS HU/CM wiring harness-side connector and inspect the voltage, continuity, or resistance according to the standard (reference value) in the table below.

Standard (reference)





Standard (Reference) (Part 1):





Standard (Reference) (Part 2):