Toyota Sienna Service Manual: Steering Angle Sensor Communication Stop Mode

Toyota Sienna Service Manual / Can communication / Can communication system / Fail-safe chart / Steering Angle Sensor Communication Stop Mode

DESCRIPTION

Detection Item	Symptom	Trouble Area
Steering Angle Sensor Communication Stop Mode	"Steering angle sensor" is not displayed on the "Communication Bus Check" screen of the intelligent tester Applies to "Steering Angle Sensor Communication Stop Mode" in the "DTC COMBINATION TABLE"	Power source circuit of steering angle sensor Steering angle sensor branch wire or connector Steering angle sensor

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Turn the ignition switch off before measuring the resistances of CAN bus main wires and CAN bus branch wires.
After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches, or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

HINT: Operating the ignition switch, any switches, or any doors triggers related ECU and sensor communication with the CAN. This communication will cause the resistance value to change.

1 CHECK OPEN IN CAN BUS WIRE (STEERING ANGLE SENSOR BRANCH WIRE)

Turn the ignition switch off.
Disconnect the steering angle sensor connector.
Measure the resistance according to the value(s) in the table below.

Standard resistance

2 CHECK WIRE HARNESS (BAT, IG1, ESS)

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

Standard resistance

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

Standard voltage

REPLACE STEERING ANGLE SENSOR

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Other materials:

Diagnosis system
1. CHECK DLC3 The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do ...

The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted
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Open in One Side of CAN Branch Line
DESCRIPTION If 2 or more ECUs and/or sensors do not appear on the intelligent tester "Communication Bus Check" screen, one side of the CAN branch wire may be open. (One side of the CAN-H [branch wire] / CAN-L [branch wire] of the ECU and/or sensor is open.) Symptom ...