Abs Actuator Check

Ensure battery is fully charged. Disconnect ABS actuator and control relay harness connectors. Connect Test Harness (09990-00200 and 09990-00300) and Actuator Checker (09990-00150) to vehicle, following manufacturer's instructions. Connect actuator checker positive and negative power cables to vehicle battery.
Place Sheet "M" (09990-00400) on actuator checker. Start engine and let idle. Turn actuator checker SELECTOR switch to FRONT LH position. See Fig 1. Press and hold MOTOR switch for a few seconds. Ensure motor running can be heard. Depress and hold brake pedal for 15 seconds. Ensure brake pedal does not go down. While holding brake pedal, press MOTOR switch for a few seconds. Ensure brake pedal does not pulsate.
NOTE: DO NOT press POWER switch for more than 10 seconds.

Fig 1: Identifying Actuator Checker Switches (Typical)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Press and hold POWER switch for a few seconds and ensure brake pedal does not go down. While holding brake pedal, release POWER switch. Ensure brake pedal goes down. While holding brake pedal, press MOTOR switch and ensure brake pedal returns. Release brake pedal.
Check right front wheel. Set SELECTOR switch to FRONT RH. Test opposing wheel following steps 2 and 3.
Repeat steps 2 and 3 for REAR RH and REAR LH by turning SELECTOR switch on actuator checker. When checking REAR LH position, press REAR LH POWER switch, instead of POWER switch. Left rear wheel can be checked in any selector switch position.
After checking remaining wheels, press and hold MOTOR switch for a few seconds. Stop engine. Remove actuator checker and test harnesses. Reconnect vehicle harnesses to actuator and control relay. Clear DTCs. See CLEARING DTCS under SELF-DIAGNOSTICS.