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Home >> Toyota >> 2009 >> Tundra 2WD V6-4.0L (1GR-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinout Values and Diagnostic Parameters >> LIN Communication System
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LIN Communication System








MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK AIR CONDITIONING AMPLIFIER (A/C ECU)





(a) Measure the voltage and resistance according to the value(s) in the table below.
HINT: Check from the rear of the connector while it is connected to the air conditioning amplifier.





If the result is not as specified, the ECU may have a malfunction.

2. CHECK INTEGRATION CONTROL AND PANEL





(a) Disconnect the J37 integration control and panel connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.





If the result is not as specified, there may be a malfunction on the wire harness side.

3. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)





(a) Disconnect the DA and DD ECU connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.





If the result is not as specified, there may be a malfunction on the wire harness side.
4. CHECK SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU)





(a) Disconnect the W3 ECU connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.





If the result is not as specified, there may be a malfunction on the wire harness side.
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