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Diagnostic Procedure
NHEC0270
1 CHECK A/T CONTROL INPUT SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector and TCM (Transmission Control Module) harness connector.
SEC004C
SEF271X
3. Check harness continuity between ECM terminal 114 and TCM terminal 33.
Refer to Wiring Diagram.
Continuity should exist.
OK or NG
OK © GO TO 2.
NG © Repair harness or connectors.
2 CHECK A/T CONTROL INPUT SIGNAL CIRCUIT FOR SHORT
1. Check harness continuity between ECM terminal 114 and ground.
Refer to Wiring Diagram.
Continuity should not exist.
2. Also check harness for short to power.
OK or NG
OK © GO TO 3.
NG © Repair short to ground or short to power in harness or connectos.
3 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
© INSPECTION END
DTC P0600 A/T COMMUNICATION LINE
Diagnostic Procedure
EC-448
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