Toyota RAV4 Service Manual: Open in pump motor circuit

Description

The motor relay drives the pump motor based on a signal from the skid control ecu.

Wiring diagram

Refer to dtc c0273/13, c0274/14, c1361/91 (see page bc-79).

Inspection procedure

1. Perform active test by intelligent tester (motor relay)

1. Select the active test, generate a control command, and then check that the abs motor relay operates.

Ok: operation sound of abs motor is heard.

2. Reconfirm dtc

1. Clear the dtc (see page bc-47).
2. Start the engine.
3. Drive the vehicle at a speed of 6 km/h (4 mph) or more for several seconds.
4. Check if the same dtc is output (see page bc-47).

Result

Replace abs and traction actuator assembly

3. Inspect fuse (abs1)

1. Remove the abs1 h-fuse from the engine room no. 1 Relay block.
2. Measure the resistance of the fuse.

Standard resistance: below 1

4. Check wire harness (skid control ecu - battery and body ground)

1. Disconnect the a19 connector.
2. Measure the resistance of the wire harness side connector.

Standard resistance

3. Measure the voltage of the wire harness side connector.

Standard voltage

Replace abs and traction actuator assembly