## PGM-FI System

#### DTC Troubleshooting

11-59

DTC P0107: MAP Sensor Circuit Low Voltage

1. Turn the ignition switch ON (II).
2. Check the MAP with the scan tool.

Is about 101 kPa (760 mmHg, 30 in.Hg) or 2.9 V indicated?

YES | - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the MAP sensor and at the ECM/PCM.
NO | - Go to step 3.

3. Turn the ignition switch OFF.
4. Disconnect the MAP sensor 3P connector.
5. Turn the ignition switch ON (II).
6. Measure voltage between the MAP sensor 3P connector terminals No. 1 and No. 3.

MAP SENSOR 3P CONNECTOR

Wire side of female terminals

Is there about 5 V?

YES | - Go to step 8.
NO | - Go to step 7.

7. Measure voltage between ECM/PCM connector terminals A11 and A21.

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is there about 5 V?

YES | - Repair open in the wire between ECM/PCM (A21) and the MAP sensor.
NO | - Substitute a known-good ECM/PCM and recheck (see page 11-6). If symptom/indication goes away, replace the original ECM/PCM.

8. Check the MAP with the scan tool.

Is 2 kPa (15 mmHg, 0.6 in.Hg) or less or 0 V indicated?

YES | - Go to step 9.
NO | - Replace the MAP sensor.

9. Turn the ignition switch OFF.
10. Disconnect ECM/PCM connector A (31P).
11. Check for continuity between the MAP sensor connector terminal No. 2 and body ground.

MAP SENSOR 3P CONNECTOR

Wire side of female terminals

Is there continuity?

YES | - Repair short in the wire between the ECM/PCM (A19) and the MAP sensor.
NO | - Substitute a known-good ECM/PCM and recheck (see page 11-6). If symptom/indication goes away, replace the original ECM/PCM.