MIL Never Comes on
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Part 2 Of 2:
NOTE: If this symptom is intermittent, check for:
- A loose ECU (ECM/PCM) (M/T: 15 A. A/T: 20 A) fuse in the under-hood fuse/relay box
- A loose No.1 (BACK UP, LIGHTS, METER LIGHTS, CLOCK, SECURITY) (10 A) fuse in the under-dash fuse/relay box
- A loose No.2 FUEL PUMP (15 A) fuse in the under-dash fuse/relay box
- An intermittent short in the wire between the ECM/PCM (A18) and the gauge assembly
- An intermittent short in the wire between the ECM/PCM (C19) and the MAP sensor
- An intermittent short in the wire between the ECM/PCM (C28), the TP sensor, the EGR valve lift sensor and/or fuel tank pressure sensor
- PGM-FI main relay.