Integration Control and Panel Assembly Communication Error

MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: Integration Control and Panel Assembly Communication Error
- Integration Control and Panel Assembly Communication Error

DESCRIPTION

The LIN communication of the components related to the mirror heater occurs between the air conditioning amplifier assembly (A/C ECU) and integration control and panel assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When using the Techstream with the ignition switch OFF to troubleshoot:

Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - INTEGRATION CONTROL AND PANEL)





(a) Disconnect the J37 integration control and panel assembly connector.

(b) Disconnect the J19 air conditioning amplifier assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL - BATTERY AND BODY GROUND)

(a) Disconnect the J37 integration control and panel assembly connector.





(b) Measure the resistance and voltage according to the value(s) in the table below.

Standard Resistance:





Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK INTEGRATION CONTROL AND PANEL ASSEMBLY (OPERATION)

(a) Temporarily replace the integration control and panel assembly with a new or normally functioning one.

(1) For Column Shift Type, refer to the following procedures Removal.

(2) For Floor Shift Type, refer to the following procedures Removal.

(b) Check that the malfunction disappears.

OK:

Malfunction disappears.

NG -- REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Removal

OK -- END (INTEGRATION CONTROL AND PANEL ASSEMBLY IS DEFECTIVE)