LIN Communication System

MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use these procedures to troubleshoot the LIN communication system.
- *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
NEXT -- Continue to next step.
3. CHECK FOR DTC (ELECTRICAL POWER CONTROL SYSTEM)*
(a) Using the Techstream, check if the electric power control system is functioning normally.

Result:





B -- GO TO ELECTRIC POWER CONTROL SYSTEM
A -- Continue to next step.
4. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
(a) Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the communication system CAN Communication System.

Result:





B -- GO TO CAN COMMUNICATION SYSTEM
A -- Continue to next step.
5. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*
(a) Using the Techstream, inspect the LIN communication function to ensure there are no malfunctions in the communication system.

Result:





B -- DIAGNOSTIC TROUBLE CODE CHART
A -- Continue to next step.
6. PROBLEM SYMPTOMS TABLE

Result:





B -- Go to step 8
A -- Continue to next step.
7. OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) Data List/Active Test Scan Tool Testing and Procedures

(b) Terminals of ECU LIN Communication System

NEXT -- Continue to next step.
8. ADJUST, REPAIR OR REPLACE
NEXT -- END