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Diagnostic Procedure
NGEC0278
1 CHECK INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and combination meter harness connector M39.
3. Check harness continuity between ECM terminal 29 and meter terminal 37.
SEF200V
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK 䊳 GO TO 3.
NG 䊳 GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
쐌 Harness connectors M58, F28
쐌 Harness for open or short between ECM and combination meter
䊳 Repair open circuit or short to ground or short to power in harness or connectors.
3 CHECK SPEEDOMETER FUNCTION
Make sure that speedometer functions properly.
OK or NG
OK 䊳 GO TO 5.
NG 䊳 GO TO 4.
4 DETECT MALFUNCTIONING PART
Check the following.
쐌 Harness connectors E43, M65
쐌 Harness connectors E32, E202
쐌 Harness for open or short between combination meter and vehicle speed sensor
䊳 Repair harness or connectors. Check vehicle speed sensor and its circuit. Refer to EL-84.
5 CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-142.
䊳 INSPECTION END
DTC P0500 VEHICLE SPEED SENSOR (VSS)
KA24DE
Diagnostic Procedure
EC-426
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