Preliminary Check
1. FOREIGN OBJECTS
Check the following:
Are there any foreign objects that could be causing interference?
2. WIRING CONNECTIONS
Are any connectors damaged or loose?
3. POWER AND GROUND
Check power supply and ground circuits for control unit. Refer to ADP-47, "DRIVER SEAT CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
Special Repair Requirement
Refer to Owner's Manual for Automatic Drive Positioner system operating instructions.
DTC/circuit diagnosis
MAIN LINE BETWEEN DLC AND HVAC CIRCUIT
Diagnosis Procedure
1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Disconnect the following harness connectors.
ECM
A/C auto amp.
Check the continuity betw ...
DLC branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative
terminal.
Check the terminals and connectors of the data
link connector for damage, bend and loose connection
(connector side and harn ...
TCM branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and
loose connection (unit side and connector
side).
TCM
Harness connector F1
Harness con ...