How To Proceed With Troubleshooting

AXLE SYSTEM:

HOW TO PROCEED WITH TROUBLESHOOTING
HINT: The Techstream can be used in steps 3, 4, 5, 6, 7 and 11.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. CUSTOMER PROBLEM ANALYSIS
(a) Confirm problem symptoms.
NEXT -- Continue to next step.
3. CHECK MULTIPLEX COMMUNICATION SYSTEM
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT: The skid control ECU sends the AWD indicator signals (AWD warning) to the gateway ECU via the CAN communication, and the gateway ECU sends the signals to the combination meter assembly (meter CPU) via multiplex communication system (BEAN Bus).

Result:






B -- CHECK MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.
4. CHECK CAN COMMUNICATION SYSTEM
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT: The skid control 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:






B -- CHECK CAN COMMUNICATION SYSTEM
A -- Continue to next step.
5. CHECK HYBRID CONTROL SYSTEM DTC
(a) Check for DTCs Hybrid Control System.
(1) Record the DTCs.
(b) Clear the DTCs Hybrid Control System.
(c) Recheck for DTCs.
(1) Simulate the malfunction and check if the DTCs are output again Hybrid Control System.
Result:






B -- CHECK HYBRID CONTROL SYSTEM
A -- Continue to next step.
6. CHECK BRAKE CONTROL SYSTEM DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
(1) Record the DTCs.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Recheck for DTCs.
(1) Simulate the malfunction and check if the DTCs are output again Reading and Clearing Diagnostic Trouble Codes.
Result:






B -- GO TO STEP 8
C -- SYMPTOM SIMULATION
A -- Continue to next step.
7. DIAGNOSTIC TROUBLE CODE CHART






NEXT -- GO TO STEP 9
8. PROBLEM SYMPTOMS TABLE
NEXT -- Continue to next step.
9. CIRCUIT INSPECTION
NEXT -- Continue to next step.
10. REPAIR
NEXT -- Continue to next step.
11. CONFIRMATION TEST
NEXT -- END