1996 Dodge Caravan

TEST TC-146A - 5-VOLT SUPPLY OUTPUT TOO LOW
3.0L article.

Turn ignition on with engine off. Disconnect connector at throttle position sensor, mounted on throttle body.
Using scan tool in voltmeter mode, check voltage at Violet/White wire on connector for throttle position sensor. If voltage is less than 4.5 volts, go to step 5). If voltage is 4.5 volts or more, go to next step.

Reinstall connector on throttle position sensor. Disconnect connector from MAP sensor.

Using scan tool in voltmeter mode, check voltage at Violet/White wire on connector for MAP sensor. If voltage is less than 4.5 volts, replace throttle position sensor. If voltage is 4.5 volts or more, let me know

Disconnect connector from MAP sensor
Using scan tool in voltmeter mode, check voltage at Violet/White wire on connector for throttle position sensor. If voltage is 4 volts or less, go to next step. If voltage is more than 4 volts, replace MAP sensor.

Disconnect connector from A/C pressure sensor. The A/C pressure sensor is located on A/C refrigerant line on firewall, near front of alternator and contains a Gray 4-pin connector.
Using scan tool in voltmeter mode, check voltage at Violet/White wire on connector for throttle position sensor. If voltage is 4 volts or less, go to next step. If voltage is more than 4 volts, replace A/C pressure sensor.

Turn ignition off. Disconnect connectors from PCM. The PCM is located between driver's side front fender and power distribution center, near battery.

Using scan tool in ohmmeter mode, check resistance at Violet/White wire on connector for throttle position sensor. If resistance is less than 5 ohms, repair short to ground in Violet/White wire between PCM and throttle position sensor.
If resistance is 5 ohms or more, replace PCM.