Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replacing the master cylinder solenoid, perform zero point CALIBRATION .

HINT:

When U0073/94, U0100/65, U0123/62, U0124/95 or U0126/63 is output together with C1231 /31 and C1290/66, inspect and repair the trouble areas indicated by U0073/94, U0100/65, U0123/62, U0124/95 or U0126/63 first.
When the speed sensor or the yaw rate and deceleration sensor has trouble, DTCs of the steering angle sensor may be output even when the steering angle sensor is normal. When DTCs of the speed sensor (C0200/31, C0205/32, C0210/33, C0215/34, C1235/35, C1236/36, C1238/38, C1239/39) or yaw rate and deceleration sensor (C1232/32, C1234/34, C1243/43, C1244/44, C1245/45, C1381/97) are output together with other DTCs of the steering angle sensor, inspect and repair the speed sensor and yaw rate and deceleration sensor first, and then inspect and repair the steering angle sensor.
Start the inspection from step 1 when using the hand-held tester and start from step 3 when not using the hand-held tester.

READ VALUE OF HAND-HELD TESTER (STEERING ANGLE SENSOR)

Connect the hand-held tester to the DLC3.
Turn the ignition switch to the ON position and push the hand-held tester main switch ON.

Select "DATA LIST" mode on the hand-held tester.

ITEM, MEASUREMENT ITEM/RANGE (DISPLAY), NORMAL CONDITION AND DIAGNOSTIC NOTE

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
STEERING ANG	Steering angle sensor/min.:-1152 deg/s, max.: 1150.875 deg/s	Left turn: Increase Right turn: Decrease	-

Check that the steering wheel turning angle value of the steering angle sensor displayed on the handheld tester changes when turning the steering wheel.

OK: Steering angle sensor value changes.

Result:

RESULT DESCRIPTION (1 OF 2)

OK: (When troubleshooting in accordance with the DTC CHART.)	A
OK: (When troubleshooting in accordance with the PROBLEM SYMPTOMS TABLE.)	B
NG	C

B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
C: Go to step 3
A: GO TO NEXT STEP

RECONFIRM DTC

Clear the DTCs (see DTC CHECK/CLEAR ).
Drive the vehicle at a speed of approximately 6 mph (10 km/h) or more for 10 seconds or more.

Check if the same pending DTCs are detected (see DTC CHECK/CLEAR ).

Result:

RESULT DESCRIPTION (2 OF 2)

DTC is output	A
DTC is not output	B

B: END
A: GO TO NEXT STEP
REPLACE MASTER CYLINDER SOLENOID (SEE OVERHAUL )

INSPECT STEERING ANGLE SENSOR (TERMINAL VOLTAGE AND CONTINUITY)

Remove the steering wheel and the column cover lower.
Disconnect the steering angle sensor connector.

Measure the voltage according to the value(s) in the table below.

Fig 1: Identifying Steering Angle Sensor Connector Terminals

Standard:

TESTER CONNECTION, CONDITION AND SPECIFIED CONDITION (1 OF 2)

Tester Connection	Condition	Specified Condition
S11-1 (IG1) - Body ground	Ignition switch ON	10 to 14 V
S11-9 (BAT) - Body ground	Always	10 to 14 V

Measure the resistance according to the value(s) in the table below.

Standard:

TESTER CONNECTION, CONDITION AND SPECIFIED CONDITION (2 OF 2)

Tester Connection	Condition	Specified Condition
S11-2(ESS) - Body ground	Ignition switch OFF	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1, BAT OR ESS CIRCUIT)
OK: GO TO NEXT STEP

REPLACE STEERING ANGLE SENSOR (SEE STEERING SENSOR )

HINT:

When troubleshooting in accordance with the DTC CHART, check DTCs before replacing the steering angle sensor (see DTC CHECK/CLEAR ).
When troubleshooting in accordance with the PROBLEM SYMPTOMS TABLE, be sure to follow the table before replacing the steering angle sensor (see PROBLEM SYMPTOMS TABLE ).