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Diagnostic Procedure
NGEC0774
1 CHECK VEHICLE SPEED SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and combination meter harness connector.
3. Check harness continuity between ECM terminal 29 and meter terminal 37.
Refer to Wiring Diagram.
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 M81, F36
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 CHECK SPEEDOMETER CIRCUIT FOR OPEN AND SHORT
Check the following.
쐌 Harness connectors M58, F28
쐌 Harness connectors F43, F201
쐌 Harness for open or short between combination meter and vehicle speed sensor
OK or NG
OK 䊳 Check combination meter and vehicle speed sensor. Refer to EL section.
NG 䊳 Repair open circuit or short to ground or short to power in harness or connectors.
5 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-732.
䊳 INSPECTION END
DTC P0500 VEHICLE SPEED SENSOR (VSS)
VG33E
Diagnostic Procedure
EC-1026
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