Toyota Tundra Service Manual: Steering Angle Sensor Power Source Voltage Malfunction (C1432)

Toyota Tundra Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Steering Angle Sensor Power Source Voltage Malfunction (C1432)

DESCRIPTION

This DTC is stored when the skid control ECU (brake actuator assembly) receives a +B line open signal from the steering angle sensor (spiral with sensor cable sub-assembly).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1432	Steering Angle Sensor Power Source Voltage Malfunction	With the +BS terminal voltage between 9.6 and 16.5 V, a steering angle sensor power supply circuit malfunction signal is received from the steering angle sensor.	ECU-B NO. 1 fuse ECU-IG1 NO. 2 fuse Steering angle sensor (spiral with sensor cable sub-assembly) power supply Steering angle sensor (spiral with sensor cable sub-assembly)

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)

(a) Remove the steering wheel and column cover.

*a	Front view of wire harness connector (to Steering Angle Sensor (Spiral with Sensor Cable Sub-assembly))

(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
J166-6 (BAT) - Body ground	Always	11 to 14 V
J166-5 (IG) - Body ground	Ignition switch ON	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

2.	CHECK HARNESS AND CONNECTOR (GROUND TERMINAL)

(a) Turn the ignition switch off.

*a	Front view of wire harness connector (to Steering Angle Sensor (Spiral with Sensor Cable Sub-assembly))

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

NOTICE:

Before measuring the resistance of the steering angle sensor (spiral with sensor cable sub-assembly), turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key or switches, or opening or closing the doors.

Standard Resistance:

Tester Connection	Condition	Specified Condition
J166-2 (ESS) - Body ground	1 minute after ignition switch off	Below 1 Ω

REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)

Brake Pedal Load Sensing Switch OFF Stuck Malfunction (C1430,C1431)

Steering Angle Sensor Internal Circuit (C1433)

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