Test SC-2A - Checking Speed Control On/Off Switch
WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition off. Disconnect speed control switch connector. Check connector for damaged, pushed out or miswired terminals. Repair as necessary. Perform TEST SC-VER . If connector is okay, check voltage of speed control switch connector, switch signal circuit (Brown/Red wire) using DRB in voltmeter mode.
- If voltage is less than 10 volts, repair short to ground in Brown/Red wire. Perform TEST SC-VER . If voltage is greater than 10 volts, turn ignition on. Using DRB in voltmeter mode, check voltage of speed control switch connector, fused ignition switch output circuit (Yellow/Red wire). If voltage is less than 10 volts, repair open Yellow/Red wire. Perform TEST SC-VER .
- If voltage is greater than 10 volts, connect a jumper wire between speed control switch connector, fused ignition switch output circuit (Yellow/Red wire) and speed control switch signal circuit (Brown/Red wire).
- Using DRB, read speed control switch voltage. If DRB displays 5.00V SET, replace speed control switch. Perform TEST SC-VER . If DRB does not display 5.00V SET, turn ignition off.
- Disconnect Powertrain Control Module (PCM) connector. Check connector for damaged, pushed out or miswired terminals. Repair as necessary. Perform TEST SC-VER . If connector is okay, turn ignition on.
- Using an external ohmmeter, check resistance of speed control switch signal circuit between speed control switch connector (Brown/Red wire) and PCM connector terminal No. 23 (Red/Light Green wire). If resistance is greater than 5 ohms, repair open Brown/Red wire or Red/Light Green wire. Perform TEST SC-VER . If resistance is less than 5 ohms, replace PCM. Perform TEST SC-VER .