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 intelligent tester or 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. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
(a) Using the intelligent tester or 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.
4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*
(a) Using the intelligent tester or Techstream, inspect the LIN communication function to ensure there are no malfunctions in the communication system.

Result:





B -- Go to DIAGNOSTIC TROUBLE CODE CHART
A -- Continue to next step.
5. PROBLEM SYMPTOMS TABLE
(a) Refer to the problem symptoms table Problem Symptoms Table.

Result:





B -- Go to step 7
A -- Continue to next step.
6. 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.
7. ADJUST, REPAIR OR REPLACE
NEXT -- END