## PGM-FI System

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

11-42

77. Check the scan tool/Honda PGM Tester for DTCs.

Are any DTCs indicated?

YES - Go to the DTC Troubleshooting Index.

NO - Go to step 78.

78. Turn the ignition switch OFF.
79. Turn the ignition switch ON (II).

80. Measure voltage between ECM/PCM connector terminal E29 and body ground.

ECM/PCM CONNECTOR E (31P)

Wire side of female terminals

Is there about 5 V (or battery voltage)?

YES - Go to step 84.

NO - Go to step 81.

81. Turn the ignition switch OFF.
82. Disconnect ECM/PCM connector E (31P).

83. Check for continuity between ECM/PCM connector terminal E29 and body ground.

ECM/PCM CONNECTOR E (31P)

Wire side of female terminals

Is there continuity?

YES - Repair short in the wire between the service check connector and the ECM/PCM (E29).

NO - Substitute a known-good ECM/PCM and recheck, refer to the '01 Civic Shop Manual on this CD (see page 11-313). If symptom/indication goes away, replace the original ECM/PCM.

84. Turn the ignition switch OFF.
85. Disconnect ECM/PCM connector E (31P).
86. Turn the ignition switch ON (II).

Is the MIL on?

YES - Repair short in the wire between the gauge assembly and the ECM/PCM (E31). If the wires are OK, replace the gauge assembly.

NO - Substitute a known-good ECM/PCM and recheck, refer to the '01 Civic Shop Manual on this CD (see page 11-313). If symptom/indication goes away, replace the original ECM/PCM.