All Other Models
- Disconnect 6-way connector at amplifier. Connect an ohmmeter between Dk. Green/dashed Black connector terminals on Van models and Dk. Green/White and Black connector terminals at speed sensor end on all other models. A reading of about 200 ohms should be obtained.
- A reading of zero ohms indicates a shorted coil or wiring harness. A maximum reading indicates an open coil or wiring harness. Replace sensor in either case. If reading is 200 ohms and speedometer operates properly, speed sensor is probably good. A speed sensor of known quality can be substituted in place of existing sensor to check proper operation.