MIL Stays On

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NOTE: If this symptom is intermittent, check for the following problems.

The MIL never comes on after the ignition switch is turned ON (II).
- A loose FI E/M (15 A) fuse in the under-hood fuse/relay box.
- A loose No.13 FUEL PUMP (15 A) fuse in the under-dash fuse/relay box.
- A loose No.25 METER (7.5 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 (A19) and the MAP sensor.
- An intermittent short in the wire between the ECM/PCM (A28) the TP sensor and the fuel tank pressure sensor.
- PGM-FI main relay.


The MIL stays on or comes on after two seconds with the ignition switch turned ON (II).
- An intermittent short in the wire between the ECM/PCM (A10) and the service check connector.
- An intermittent short in the wire between the ECM/PCM (A18) and the gauge assembly.

When there is no Diagnostic Trouble Code (DTC) stored, the MIL will stay on if the SCS short connector is connected and the ignition switch is ON (II).