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)

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Wheel Speed Sensor: Testing and Inspection

1. Raise and support vehicle, release parking brake.
2. Disconnect ABS ECU harness connector.

Fig 81 Wheel Speed Sensor Voltage Inspection:

Fig 82 Wheel Speed Sensor Voltage Inspection:

3. Rotate wheel 1 turn per second and measure voltage between terminals shown.
4. Voltmeter should indicate a voltage signal of 70 or more mV.
5. If voltage is lower than 70 mV, check wiring harness and speed sensor. Repair or replace as necessary.