Variable Gear Ratio Steering. Dtc C15A1/61 Actuator Malfunction

Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (PIG, PGND TERMINAL)

INSPECT STEERING ACTUATOR ASSEMBLY

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

RECONFIRM DTC

DTC C15A1/61 Actuator Malfunction

DTC C15A2/62 Open in Motor Circuit

DTC C15A6/62 Actuator Motor Power Distribution Malfunction

DESCRIPTION

If the VGRS ECU (steering control ECU) detects excessive current, it stores DTC C15A1/61, turns on the master warning light.
If the VGRS ECU (steering control ECU) detects excessive current flowing into the steering actuator assembly or an internal malfunction, it turns the master warning light on, and stores DTC C15A2/62.
If the VGRS ECU (steering control ECU) detects a malfunction in the motor drive circuit, it turns the master warning light on, and stores DTC C15A6/62.

DTC No.	DTC Detection Condition	Trouble Area
C15A1/61	Either condition is met: After the engine switch is turned on (IG), a short in the motor circuit or an internal ECU (motor drive circuit) malfunction continues for 1.2 seconds or more before control starts. After the engine switch is turned on (IG), a short in the motor circuit or an internal ECU (motor drive circuit) malfunction continues for 0.03 seconds or more.	Steering actuator assembly VGRS ECU (steering control ECU) Harness or connector
C15A2/62	Either condition is met: After the engine switch is turned on (IG), an open in the motor circuit or an internal ECU (motor drive circuit) malfunction continues for 1.2 seconds or more before control starts. After the engine switch is turned on (IG), an open in the motor circuit or an internal ECU (motor drive circuit) malfunction continues for 0.03 seconds or more.	Steering actuator assembly VGRS ECU (steering control ECU) Harness or connector
C15A6/62	Either condition is met: After the engine switch is turned on (IG), an open in the motor circuit or an internal ECU (motor drive circuit) malfunction continues for 1.2 seconds or more before control starts. After the engine switch is turned on (IG), an open in the motor circuit or an internal ECU (motor drive circuit) malfunction continues for 0.03 seconds or more.	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
C15A1/61 Actuator Malfunction

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

HINT:

When DTC C15A2/62 is output, a short circuit inside the steering actuator assembly or inside the VGRS ECU (steering control ECU) is suspected.

1.CHECK HARNESS AND CONNECTOR (PIG, PGND TERMINAL)

Turn the engine switch off.

Measure the resistance according to the value(s) in the table below.
HINT:
Perform the inspection from the rear of the connector with the connector connected to the VGRS ECU (steering control ECU).
Standard Resistance:
Tester Connection
Condition
Specified Condition
E159-1(PGND) - Body ground
Always
Always

Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
Condition
Specified Condition
E159-2(PIG) - E159-1(PGND)
Always
11 to 14 V

Text in Illustration
*a	Component with harness connected (VGRS ECU [Steering Control ECU])

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.INSPECT STEERING ACTUATOR ASSEMBLY

Disconnect the E160 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
E160-2 (BMV) - E160-3 (BMU)	Always	Below 1 Ω
E160-2 (BMV) - E160-1 (BMW)	Always	Below 1 Ω
E160-3 (BMU) - E160-1 (BMW)	Always	Below 1 Ω
E160-1 (BMW) - Body ground	Always	100 kΩ or higher
E160-2 (BMV) - Body ground	Always	100 kΩ or higher
E160-3 (BMU) - 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
The resistance value deviates from the standard	A
The resistance value is within the standard	B

Go to step 4

A

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

Turn the engine switch off.

Disconnect the E160 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
E160-2 (BMV) - E80-5 (BMV+)	Always	Below 1 Ω
E160-3 (BMU) - E80-4 (BMU+)	Always	Below 1 Ω
E160-1 (BMW) - E80-13 (BMW+)	Always	Below 1 Ω
E160-2 (BMV) - E160-3 (BMU)	Always	100 kΩ or higher
E160-2 (BMV) - E160-1 (BMW)	Always	100 kΩ or higher
E160-3 (BMU) - E160-1 (BMW)	Always	100 kΩ or higher
E160-2 (BMV) or E80-5 (BMV+) - Body ground	Always	100 kΩ or higher
E160-3 (BMU) or E80-4 (BMU+) - Body ground	Always	100 kΩ or higher
E160-1 (BMW) or E80-13 (BMW+) - Body ground	Always	100 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE STEERING ACTUATOR ASSEMBLY (Click here)

4.RECONFIRM DTC

Reconnect the E160 VGRS ECU (steering control ECU) connector.

Clear the DTCs (Click here).

Start the engine.

Check for DTCs (Click here).

Result
Result
Proceed to
DTCs C15A1/61, C15A2/62 and C15A6/62 is not output (for LHD)
A
DTCs C15A1/61, C15A2/62 and C15A6/62 is not output (for RHD)
B
DTCs C15A1/61, C15A2/62 and C15A6/62 is output
C

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

REPLACE STEERING ACTUATOR ASSEMBLY (Click here)

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

Result	Proceed to
DTCs C15A1/61, C15A2/62 and C15A6/62 is not output (for LHD)	A
DTCs C15A1/61, C15A2/62 and C15A6/62 is not output (for RHD)	B
DTCs C15A1/61, C15A2/62 and C15A6/62 is output	C