DTC P0500: VEHICLE SPEED SENSOR (VSS)
1. Check Input Signal Circuit - Turn ignition off. Disconnect ECM harness connector and combination meter harness connector. See Fig. 1. Using an ohmmeter, check continuity between combination meter harness connector terminal "7" (White/Blue wire) and ECM harness connector terminal No. 26. See Fig. 2 and Fig. 21. If no continuity exists, repair open in Yellow/Green wire. If continuity exists, go to next step.
2. Check Speedometer Operation - Check speedometer operation. If speedometer does not function, disconnect VSS harness connector. Remove VSS from transaxle. Check resistance between VSS connector terminals. Replace VSS if resistance is not 250 ohms. If resistance is 250 ohms, go to next step.
3. Set voltmeter on AC scale. Connect voltmeter to VSS connector terminals. Turn VSS pinion gear to generate voltage. Voltage should generate to about 0.5 volt. If resistance and voltage are not correct, replace vehicle speed sensor. If VSS unit is okay, check ECM connector terminals for corrosion or damage. Repair as necessary and retest system.
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Sunday, December 16th, 2012 AT 8:08 AM