CHECK IGNITION POWER SUPPLY CIRCUIT.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from rear vehicle speed sensor.

3) Measure the ignition power supply voltage between rear vehicle speed sensor connector and transmission ground.

Connector & terminal

(AT10) No. 3 (+) — Transmission ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Check harness between rear vehicle speed sensor and battery for open circuit, short or poor contact. Repair the harness if required.