How To Proceed With Troubleshooting

HINT:

The intelligent tester can be used in steps 3, 4, 5, 7 and 11.

VEHICLE BROUGHT TO WORKSHOP
NEXT: Go To Next Step
CUSTOMER PROBLEM ANALYSIS
1. Confirm problem symptoms.
NEXT: Go To Next Step

CHECK MULTIPLEX COMMUNICATION SYSTEM

Check for DTCs (See DTC CHECK/CLEAR ).

HINT:

The 4WD control ECU sends the signals from the indicator light to the gateway ECU via CAN communication, and the gateway ECU sends the signals to the combination meter assembly via the multiplex communication system (BEAN).

Result

DTC OUTPUT RESULT

Result	Proceed to
DTC is not output	A
DTC is output	B

B: CHECK MULTIPLEX COMMUNICATION CIRCUIT

A: Go To Next Step

CHECK CAN COMMUNICATION SYSTEM

Check for DTCs (See DIAGNOSIS SYSTEM ).

HINT:

The ECU of this system is connected to the CAN communication system.

Therefore before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

Result

DTC OUTPUT RESULT

Result	Proceed to
DTC is not output	A
DTC is output	B

B: CHECK CAN COMMUNICATION CIRCUIT

A: Go To Next Step

CHECK DTC

Check for DTCs (See DTC CHECK / CLEAR ).
1. Record the DTCs.
Clear the DTCs.
Recheck for DTCs.
1. Reproduce the malfunction and check if the DTCs are output again.

Result

DTC OUTPUT RESULT

Result	Proceed to
DTC is output	A
DTC is not output	B
DTCs are not output, and the malfunction cannot be reproduced or checked	C

B: GO TO STEP 10

C: SYMPTOM SIMULATION

A: Go To Next Step

DTC TABLE
1. Go to DIAGNOSTIC TROUBLE CODE TABLE .
NEXT: Go To Next Step
CIRCUIT INSPECTION
NEXT: Go To Next Step
REPAIR
NEXT: Go To Next Step
CONFIRMATION TEST
NEXT: END
HYDRAULIC TEST
1. Perform HYDRAULIC TEST .
NG: REPAIR HYDRAULIC CIRCUIT

OK: Go To Next Step
PROBLEM SYMPTOMS TABLE
1. Go to PROBLEM SYMPTOMS TABLE .
NEXT: Go To Next Step
CIRCUIT INSPECTION
NEXT: Go To Next Step
REPAIR
NEXT: Go To Next Step
CONFIRMATION TEST
NEXT: END