## PGM-FI System

#### MIL Circuit Troubleshooting (cont'd)

11-547

47. Measure voltage between body ground and ECM/PCM connector terminals A4, A5, A23 and A24 individually.

ECM/PCM CONNECTOR A (31P)

Is there less than 1.0 V?

YES | - Repair open in the wire (s) between that had more than 1.0 V between G101 and ECM/PCM (A4, A5, A23, A24).
NO | - Go to step 48.

48. Measure voltage between body ground and ECM/PCM connector terminal A21.

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is there about 5 V?

YES | - Go to step 55.
NO | - Go to step 49.

49. Turn the ignition switch OFF.

50. Disconnect the MAP sensor 3P connector one at a time, and measure voltage between body ground and ECM/PCM connector terminal A21 with the ignition switch ON (II).

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is there about 5 V?

YES | - Replace the MAP sensor.
NO | - Go to step 51.

51. Turn the ignition switch OFF.
52. Disconnect the MAP sensor 3P connector.
53. Disconnect ECM/PCM connector A (31P)