LIN Communication Circuit: Procedure
- CHECK AIR CONDITIONING SYSTEM (OPERATION)
Result
Result Proceed to Front air conditioning control malfunctions A Rear air conditioning control malfunctions B B → See step 4
A: Go to next step
- CHECK HARNESS AND CONNECTOR (A/C CONTROL ASSEMBLY - AIR CONDITIONING AMPLIFIER)
- Disconnect the connector from the air conditioning control assembly.
- Disconnect the connector from the air conditioning amplifier.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Connection Condition Specified Condition D37-37 (LIN1) - E10-5 (LIN1) Always Below 1 Ω D37-37 (LIN1) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 3
- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
- CHECK HARNESS AND CONNECTOR (REAR A/C CONTROL ASSEMBLY - AIR CONDITIONING AMPLIFIER)
- Disconnect the connector from the rear air conditioning control assembly.
- Disconnect the connector from the air conditioning amplifier.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Connection Condition Specified Condition D38-13 (RLIN) - R1-5 (MPX-) Always Below 1 Ω D38-13 (RLIN) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 3