Toyota 4Runner manuals

Toyota 4Runner: Steering Angle Sensor Power Source Voltage Malfunction (C1432)

DESCRIPTION

Steering angle sensor signals are sent to the skid control ECU via the CAN communication system. When there is a malfunction in the CAN communication system, it is detected by the steering angle sensor zero point malfunction diagnostic function.

DTC Code

DTC Detection Condition

Trouble Area

C1432

A steering angle sensor power supply malfunction signal is received from the steering angle sensor.

  • ECU-B fuse
  • ECU-IG NO. 1 fuse
  • Steering angle sensor power supply
  • Steering angle sensor (Spiral cable sub-assembly)

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

  • Do not remove the steering angle sensor from the spiral cable.
  • When replacing the spiral cable, confirm that the replacement part is of the correct specification.
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:

  • When the speed sensor or the yaw rate and acceleration sensor has trouble, DTCs for the steering angle sensor may be stored even when the steering angle sensor is normal. When DTCs for the speed sensor or yaw rate and acceleration sensor are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate and acceleration sensor first, and then inspect and repair the steering angle sensor.

PROCEDURE

1.

CHECK DTC (CAN COMMUNICATION SYSTEM)

(a) Check for DTCs (See page ).


Result

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B


B

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

A

2.

CHECK TERMINAL VOLTAGE (IG, BAT)

(a) Make sure that there is no looseness in the locking part and connecting part of the connectors.

(b) Disconnect the F19 steering angle sensor connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F19-5 (IG) - Body ground

Ignition switch ON

11 to 14 V

F19-6 (BAT) - Body ground

Always

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to Steering Angle Sensor)



NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

OK

3.

CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)

(a) Turn the ignition switch off.

(b) Disconnect the F19 steering angle sensor connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F19-2 (ESS) - Body ground

Always

Below 1 Ω


OK

REPLACE SPIRAL CABLE SUB-ASSEMBLY


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)

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