Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2011LANDCRUISER V8-5.7L (3UR-FE)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSDTC 42IG2 POWER SOURCE CIRCUIT - VEHICLE STABILITY CONTROL SYSTEM
2011 Toyota Landcruiser V8-5.7L (3UR-FE)
IG2 Power Source Circuit - Vehicle Stability Control System
2011 Toyota Landcruiser V8-5.7L (3UR-FE)SECTION IG2 Power Source Circuit - Vehicle Stability Control System
BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1242/42: IG2 Power Source Circuit
C1242/42 - IG2 Power Source Circuit
DESCRIPTION
If there is a problem with the master cylinder solenoid (skid control ECU) power supply circuit, the skid control ECU stores DTCs and prohibits operation under the fail-safe function.
If the voltage supplied to the IG2 terminal is within the DTC detection range due to malfunctions in components such as the battery and alternator circuit, this DTC is stored.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When replacing the master cylinder solenoid, perform zero point calibration Programming and Relearning.
PROCEDURE
1. INSPECT BATTERY
(a) Check the battery voltage.
Standard Voltage:
11 to 14 V
NG -- GO TO CHARGING SYSTEM (ON-VEHICLE INSPECTION) Testing and Inspection
OK -- Continue to next step.
2. INSPECT IGN FUSE
(a) Remove the IGN fuse from the engine room relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPLACE IGN FUSE
OK -- Continue to next step.
3. INSPECT SKID CONTROL ECU (IG2 TERMINAL)
(a) Install the IGN fuse.
(b) Disconnect the A25 skid control ECU connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. INSPECT SKID CONTROL ECU (GND TERMINAL)
(a) Disconnect the A24 and A25 skid control ECU connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. RECONFIRM DTC
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Check if the same DTC is output Reading and Clearing Diagnostic Trouble Codes.
HINT
Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.
Result
B -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
A -- REPLACE MASTER CYLINDER SOLENOID Disassembly
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.