Questions and Answers

Dodge Pickup Code 14 Q. My son-in-law has a 1996 Dodge Pickup with a V-8 fuel injected engine. The vehicle has started surging between 35 to 50 mph. It also dies when you come to a stop. The only code it shows from time to time is code 14 which has something to do with ignition or map sensor. Two new map sensors have been put on the vehicle and still no change. This thing is a real challenge.

A. Here's how to test the MAP Sensor circuit:

1. Inspect the rubber L-shaped fitting from the Manifold Absolute Pressure (MAP) sensor to the throttle body. Repair as necessary. CAUTION: When testing the MAP sensor, be sure that the harness wires are not damaged by the test meter probes.
2. Test the MAP sensor output voltage at the MAP sensor connector between terminals A and B. With the ignition switch ON and the engine OFF, output voltage should be 4-to-5 volts. The voltage should drop to 1.5-to-2.1 volts with a hot, neutral idle speed condition.
3. Test powertrain control module (PCM) cavity A-27 for the same voltage described above to verify the wire harness condition. Repair as necessary.
4. Test MAP sensor supply voltage at sensor connector between terminals A and C with the ignition ON. The voltage should be approximately 5 volts (+/- 0.5V). Five volts (+/- 0.5V) should also be at cavity A-17 of the PCM wire harness connector. Repair or replace the wire harness as necessary.
5. Test the MAP sensor ground circuit at sensor connector terminal-A and PCM connector A-4. Repair the wire harness if necessary.

Fig. 59 MAP Sensor Connector Terminals