Variable Gear Ratio Steering. Dtc C15A3/63 Motor Rotation Angle Not Detected

Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200

Variable Gear Ratio Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

CHECK FRAME DATA (MOTOR RESOLVER SIN PHASE OFFSET, MOTOR RESOLVER COS PHASE OFFSET)

INSPECT STEERING ACTUATOR ASSEMBLY

CHECK HARNESS AND CONNECTOR (VGRS ECU (STEERING CONTROL ECU) - STEERING ACTUATOR ASSEMBLY)

DTC C15A3/63 Motor Rotation Angle Not Detected

DTC C15C5/69 Motor Rotation Signal Not Detected

DESCRIPTION

The steering actuator assembly drives the internal motor using the current output from the VGRS ECU (steering control ECU) to change the relative angle between the tire angle and steering wheel angle.
The motor rotation angle sensor in the steering actuator assembly detects the motor rotation angle and outputs this information to the VGRS ECU (steering control ECU).
If the VGRS ECU (steering control ECU) detects a malfunction in the motor rotation angle sensor circuit, it stores DTC C15A3/63.
The test mode DTC C15C5/69 is only stored during test mode.

DTC No.	DTC Detection Condition	Trouble Area
C15A3/63	All conditions are met for approximately 0.03 seconds or more: 2 seconds or more elapse after turning the engine switch on (IG). 2 seconds or more elapse with the power source voltage at 10 V or higher. A problem with the motor rotation angle sensor is detected.	Steering actuator assembly VGRS ECU (steering control ECU) Harness or connector
C15C5/69	The system enters test mode.	Steering actuator assembly VGRS ECU (steering control ECU) Harness or connector

WIRING DIAGRAM

Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System.
Dtc
C15A3/63 Motor Rotation Angle Not Detected

INSPECTION PROCEDURE

NOTICE:

When replacing the VGRS ECU (steering control ECU) or steering actuator assembly, perform actuator angle neutral point calibration and initialization after replacing parts (Click here).
Since DTC C1289 is stored in the skid control ECU (master cylinder solenoid), after performing repairs on the VGRS system, clear the DTCs for the vehicle stability control system.

1.CHECK DTC

Check for DTCs (Click here).

Result
Result	Proceed to
DTC C15A3/63 is output as a current DTC When the engine is started and the steering wheel is operated, DTC C15A3/63 is output as a current DTC.	A
When the engine is started and a wire harness is jiggled, DTC C15A3/63 is output as a current DTC.	B
DTC C15A3/63 is not output as a current DTC	C

REPAIR OR REPLACE HARNESS OR CONNECTOR

USE SIMULATION METHOD TO CHECK (Click here)

A

2.CHECK FRAME DATA (MOTOR RESOLVER SIN PHASE OFFSET, MOTOR RESOLVER COS PHASE OFFSET)

Turn the engine switch off.

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Display the DTCs on the GTS screen (Click here).

Select DTC "C15A3/63", and check the freeze frame data for "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" (Click here).

Result
Result	Proceed to
"Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are 5 V or higher	A
"Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are below 5 V (for LHD)	B
"Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are below 5 V (for RHD)	C

REPLACE VGRS ECU (STEERING CONTROL ECU) (Click here)

A

3.INSPECT STEERING ACTUATOR ASSEMBLY

Turn the engine switch off.

Disconnect the E162 VGRS ECU (steering control ECU) connector.

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

HINT:

Measure the resistance of the steering actuator assembly at the connector of the VGRS ECU (steering control ECU).

Standard Resistance:

Tester Connection	Condition	Specified Condition
E162-9 (RV) - E162-8 (RG)	Always	20 to 60 Ω
E162-3 (S1) - E162-8 (RG)	Always	70 to 160 Ω
E162-5 (S2) - E162-8 (RG)	Always	60 to 150 Ω
E162-9 (RV) - E162-3 (S1)	Always	90 to 220 Ω
E162-9 (RV) - E162-5 (S2)	Always	80 to 210 Ω
E162-3 (S1) - E162-5 (S2)	Always	130 to 310 Ω
E162-3 (S1) - Body ground	Always	100 kΩ or higher
E162-5 (S2) - Body ground	Always	100 kΩ or higher
E162-8 (RG) - Body ground	Always	100 kΩ or higher
E162-9 (RV) - Body ground	Always	100 kΩ or higher

Text in Illustration
*a	Front view of wire harness connector (to VGRS ECU [Steering Control ECU])

Result
Result	Proceed to
OK (for LHD)	A
OK (for RHD)	B
NG	C

REPLACE VGRS ECU (STEERING CONTROL ECU) (Click here)

Go to step 4

REPLACE VGRS ECU (STEERING CONTROL ECU) (Click here)

4.CHECK HARNESS AND CONNECTOR (VGRS ECU (STEERING CONTROL ECU) - STEERING ACTUATOR ASSEMBLY)

Turn the engine switch off.

Disconnect the E162 VGRS ECU (steering control ECU) connector.

Disconnect the E80 steering actuator assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
E162-3 (S1) - E80-2 (S1+)	Always	Below 1 Ω
E162-5 (S2) - E80-9 (S2+)	Always	Below 1 Ω
E162-8 (RG) - E80-10 (RG+)	Always	Below 1 Ω
E162-9 (RV) - E80-1 (RV+)	Always	Below 1 Ω
E162-9 (RV) - E162-8 (RG)	Always	20 to 60 Ω
E162-3 (S1) - E162-8 (RG)	Always	70 to 160 Ω
E162-5 (S2) - E162-8 (RG)	Always	60 to 150 Ω
E162-9 (RV) - E162-3 (S1)	Always	90 to 220 Ω
E162-9 (RV) - E162-5 (S2)	Always	80 to 210 Ω
E162-3 (S1) - E162-5 (S2)	Always	130 to 310 Ω
E162-3 (S1) or E80-2 (S1+) - Body ground	Always	100 kΩ or higher
E162-5 (S2) or E80-9 (S2+) - Body ground	Always	100 kΩ or higher
E162-8 (RG) or E80-10 (RG+) - Body ground	Always	100 kΩ or higher
E162-9 (RV) or E80-1 (RV+) - Body ground	Always	100 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE STEERING ACTUATOR ASSEMBLY (Click here)