DTC P0107: MAP SENSOR VOLTAGE TOO LOW Dodge Durango I

Note. For connector terminal ID, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.

Note. Manifold Absolute Pressure (MAP) sensor voltage is monitored when engine speed is more than 416 RPM but less than 1500 RPM, Throttle Position (TP) sensor voltage is less than 1.13 volts and battery voltage is more than 10.4 volts. DTC may be stored in Powertrain Control Module (PCM) when PCM senses MAP sensor voltage is less than .1 volt for 2 seconds when engine is running. Possible causes are: defective MAP sensor, defective PCM, or defective connectors or wiring.

Scheme 40

Scheme 41

1. Start engine and allow engine to idle. Using scan tool, read MAP sensor voltage. If MAP sensor voltage 1.2 volts or more, go to next step. If MAP sensor voltage is less than 1.2, go to step 3.
2. Shut engine off. Turn ignition on with engine off. Using scan tool, read MAP sensor voltage. If MAP sensor voltage is less than 3.19 volts, go to next step. If MAP sensor voltage is 3.19 volts or more, go to step 9.
3. Turn ignition off. Disconnect MAP sensor connector. On 4.7L, MAP sensor is located on front of intake manifold. (Scheme 40) On 5.2L and 5.9L, MAP sensor is located on side of throttle body. (Scheme 41) On all models, turn ignition on with engine off. Using voltmeter, check voltage at Violet/White on MAP sensor connector. If voltage is more than 4.5 volts, go to next step. If voltage is 4.5 volts or less, go to step 7.
4. Ensure MAP sensor connector is still disconnected and ignition is on with engine off. Using scan tool, read MAP sensor voltage. If MAP sensor voltage 4.5 volts or less, go to next step. If MAP sensor voltage is more than 4.5 volts, replace MAP sensor. Perform «TEST VER-5»(ref-9482-S35719050532000102700000).
5. Turn ignition off. Ensure MAP sensor connector is still disconnected. Disconnect PCM connectors. PCM is located at passenger's side front corner of engine compartment on inner fender panel. Using ohmmeter, check resistance between ground and Dark Green/Red wire on MAP sensor connector. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on Dark Green/Red wire between PCM and MAP sensor. Perform «TEST VER-5»(ref-9482-S35719050532000102700000).
6. Ensure PCM connectors and MAP sensor connector are still disconnected. Using ohmmeter, check resistance between Black/Light Blue wire and Dark Green/Red wire on MAP sensor connector. If resistance is 5 ohms or more, replace PCM. Perform «TEST VER-5»(ref-9482-S35719050532000102700000). If resistance less than 5 ohms, repair Black/Light Blue wire and Dark Green/Red wire between PCM and MAP sensor as they are shorted together. Perform «TEST VER-5»(ref-9482-S35719050532000102700000).
7. Turn ignition off. Ensure MAP sensor connector is still disconnected. Disconnect PCM connectors. PCM is located at passenger's side front corner of engine compartment on inner fender panel. Using ohmmeter, check resistance between Violet/White wire on MAP sensor connector and terminal No. 17 (Violet/White wire) on PCM connector C1. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open on Violet/White wire between MAP sensor and PCM. Perform «TEST VER-5»(ref-9482-S35719050532000102700000).
8. Ensure PCM connectors and MAP sensor connector are still disconnected. Using ohmmeter, check resistance between ground and Violet/White wire on MAP sensor connector. If resistance is 5 ohms or more, replace PCM. Perform «TEST VER-5»(ref-9482-S35719050532000102700000). If resistance is less than 5 ohms, repair short to ground on Violet/White wire between PCM and MAP sensor. Perform «TEST VER-5»(ref-9482-S35719050532000102700000).
9. Inspect wiring harness and connectors between MAP sensor and PCM. On 4.7L, MAP sensor is located on front of intake manifold. (Scheme 40) On 5.2L and 5.9L, MAP sensor is located on side of throttle body. (Scheme 41) On all models, PCM is located at passenger's side front corner of engine compartment on inner fender panel. If no problems exist, go to next step. If any problems exist, repair wiring or connectors as necessary. Perform «TEST VER-5»(ref-9482-S35719050532000102700000).
10. Start engine and allow engine to idle. Wiggle wiring harness and connectors between MAP sensor and PCM while using scan tool to monitor MAP sensor voltage. If MAP sensor voltage does not change while wiggling wiring harness and connectors, test is complete. If MAP sensor voltage changes while wiggling wiring harness and connectors, repair wiring or connectors between MAP sensor and PCM as necessary that caused the voltage to change. Perform «TEST VER-5»(ref-9482-S35719050532000102700000).