Dtc C15C6/77 Ig Power Supply Voltage

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 (IG, PGND TERMINAL)

READ VALUE USING GTS (IG POWER SUPPLY VOLTAGE)

DTC C15C6/77 IG Power Supply Voltage


DESCRIPTION

The VGRS ECU (steering control ECU) monitors the IG power supply voltage.
If the VGRS ECU (steering control ECU) detects a malfunction, it turns the master warning light on, and stores DTC C15C6/77.

DTC No.
DTC Detection Condition
Trouble Area
C15C6/77
Both conditions are met for approximately 3 seconds or more:
  1. The engine switch is on (IG).
  2. When the difference between the IG and PIG voltages is 4 V or more or the IG voltage is 18.5 V or higher, an open or short in the IG circuit or an internal malfunction in the ECU is detected.
  1. ECU-IG NO. 1 fuse
  2. Battery
  3. Charging system
  4. VGRS ECU (steering control ECU)
  5. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15C6/77 Ig Power Supply Voltage


INSPECTION PROCEDURE

NOTICE:
  1. When replacing the VGRS ECU (steering control ECU), perform actuator angle neutral point calibration and initialization after replacement (Click here).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK HARNESS AND CONNECTOR (IG, PGND TERMINAL)

  1. Turn the engine switch on (IG).



    Land Cruiser. Urj200, 202 Grj200 Vdj200.Variable Gear Ratio Steering.Variable Gear Ratio Steering System. Dtc C15C6/77 Ig Power Supply Voltage

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

    HINT:
    With the connector connected to the VGRS ECU (steering control ECU), measure the voltage from the rear of the connector.
    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E161-4 (IG) - E159-1 (PGND)
    		Engine switch on (IG)
    		11 to 14 V
    Text in Illustration
    *a
    		Component with harness connected
    (VGRS ECU [Steering Control ECU])
    Result
    Result
    		Proceed to
    The voltage is in the range of 11 to 14 V
    		A
    The voltage is below 11 V
    		B
    The voltage is higher than 14 V
    		C
HINT:
For the charging system, refer to the following:
  1. for 1UR-FE: Click here
  2. for 3UR-FE: Click here
  3. for 1VD-FTV: Click here


B
REPAIR OR REPLACE HARNESS OR CONNECTOR

C
CHECK OR REPLACE CHARGING SYSTEM OR BATTERY
A


2.READ VALUE USING GTS (IG POWER SUPPLY VOLTAGE)

  1. Turn the engine switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Chassis / VGRS / Data List.

    VGRS
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    IG Power Supply Voltage
    		IG power supply voltage/
    Min.: 0.00 V
    Max.: 255.99 V
    		11 to 14 V
    		-
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C
    OK:
    11 to 14 V


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

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

USE SIMULATION METHOD TO CHECK (Click here)