IG2 Power Source Circuit

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1242/42: IG2 Power Source Circuit

DTC C1242/42 - IG2 Power Source Circuit

DESCRIPTION





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (IGN, IG2 MAIN, IG2)
(a) Remove the IGN fuse from the engine room No. 2 relay block.
(b) Remove the IG2 MAIN fuse from the engine room No. 1 relay block.
(c) Remove the IG2 fuse from the passenger side junction block.
(d) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
2. INSPECT BATTERY
(a) Check the battery voltage.
Standard voltage:
11 to 14 V

Result





C -- RECHARGE OR REPLACE BATTERY
B -- INSPECT IGNITION RELAY NO. 2
A -- Continue to next step.
3. READ VALUE USING TECHSTREAM (IG VOLTAGE)
(a) Check the Data List for proper functioning of the IG voltage.

ABS/VSC/TRAC





Result





B -- REPLACE SKID CONTROL ECU
A -- Continue to next step.
4. INSPECT IGNITION RELAY NO. 2




(a) Remove the IG2 relay from the engine room No. 1 relay block.
(b) Measure the resistance of the relay.
Standard resistance:






NG -- REPLACE IGNITION RELAY NO. 2
OK -- Continue to next step.
5. CHECK WIRE HARNESS (SKID CONTROL ECU - BATTERY AND BODY GROUND)




(a) Disconnect the S5, S6 and S8 ECU connectors.
(b) Turn the ignition switch ON.
(c) Measure the voltage of the wire harness side connectors.
Standard voltage:





(d) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE SKID CONTROL ECU