Air Conditioning System Lin Communication Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (A/C CONTROL ASSEMBLY - AIR CONDITIONING AMPLIFIER)
AIR CONDITIONING SYSTEM - LIN Communication Circuit |
DESCRIPTION
The operation signal of a switch etc. is exchanged between terminal TX+ of the A/C control assembly (heater control base sub-assembly) and terminal LIN1 of the A/C amplifier.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK HARNESS AND CONNECTOR (A/C CONTROL ASSEMBLY - AIR CONDITIONING AMPLIFIER) |
Disconnect the connector from the A/C control assembly (heater control base sub-assembly).
Disconnect the connector from the A/C amplifier.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection (Symbols)
| Condition
| Specified Condition
|
E38-37 (LIN1) - F16-4 (TX+)
| Always
| Below 1 Ω
|
E38-37 (LIN1) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK |
|
|
|
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
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