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

Gateway ECU Communication Stop Mode

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Yaw Rate Sensor Communication Stop Mode

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Other materials:

Reassembly
1. INSTALL GENERATOR ROTOR ASSEMBLY (a) Place the drive end frame on the clutch pulley. (b) Install the generator rotor assembly to the drive end frame. (c) Place a new generator washer on the generator rotor. 2. INSTALL GENERATOR COIL ASSEMBLY (a) Using a deep socket wrench (21 ...

Erasing the entire HomeLink® memory (all three programs)
Press and hold down the 2 outside buttons for 10 seconds until the indicator light flashes. If you sell your vehicle, be sure to erase the programs stored in the HomeLink® memory. Before programming Install a new battery in the transmitter. The battery side of the transmitter must ...

DTC check / clear
1. DTC CHECK HINT: When DTC B1150/23 is detected as a result of troubleshooting for "Airbag System", perform troubleshooting for the Occupant Classification System. Check the DTCs. Connect the intelligent tester to the DLC3. Turn the ignition switch to t ...