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Diagnostic Procedure
NHEC0553
1 CHECK INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector and ABS/TCS control unit harness connector.
SEC004C
SEF280X
3. Check harness continuity between ECM terminal 114 and ABS/TCS control unit terminal 47.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK © GO TO 3.
NG © GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
I Harness connectors E81, M15
I Harness connectors M47, F45
I Check harness for open or short between ECM and ABS/TCS control unit.
© Repair open circuit or short to ground or short to power in harness or connectors.
3 CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
© INSPECTION END
DTC P1212 ABS/TCS COMMUNICATION LINE
Diagnostic Procedure
EC-488
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