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Home >> Honda >> 2000 >> CR-V SE, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> Malfunction Indicator Light (Mil) Malfunction >> Malfunction Indicator Light (MIL) Never Comes On, Even For 2 Seconds After Ignition Is Turned On

Malfunction Indicator Light (MIL) Never Comes On, Even For 2 Seconds After Ignition Is Turned On

  1. If symptom is intermittent, check for:
    • A loose FI E/M (15-amp) fuse located in under-hood fuse/relay box.
    • A loose No. 25 METER (7.5-amp) fuse located in under-dash fuse/relay box.
    • A loose No. 13 FUEL PUMP (15-amp) fuse located in under-dash fuse/relay box.
    • An intermittent short in Yellow/Red wire between PCM 31-pin connector "C" terminal No. 19 and MAP sensor connector terminal No. 1. See appropriate wiring diagram in WIRING DIAGRAMS article.
    • An intermittent short in Yellow/Blue wire between PCM 31-pin connector "C" terminal No. 28 and TP sensor, EGR valve lift sensor and/or fuel tank pressure sensor. See appropriate wiring diagram in WIRING DIAGRAMS article.
    • A faulty PGM-FI main relay.

    Perform repairs as necessary and recheck MIL operation. If no problems are found, go to next step.

  2. Turn ignition on. If low oil pressure light is on, go to next step. If low oil pressure light is not on, check No. 25 METER (7.5-amp) fuse. If fuse is blown, check for short in Yellow wire between No. 25 METER (7.5-amp) fuse and gauge assembly. See appropriate wiring diagram in WIRING DIAGRAMS article. If fuse is okay, check for short or open in Yellow wire between No. 25 METER (7.5-amp) fuse and gauge assembly. See appropriate wiring diagram in WIRING DIAGRAMS article.
  3. Try to start engine. If engine does not start, go to next step. If engine starts, turn ignition off. Using backprobe set, connect a fused jumper wire between ground and PCM 32-pin connector "A" terminal No. 18 (Green/Orange wire). See Figure . Turn ignition on. If MIL comes on, substitute a known-good PCM and recheck. See SUBSTITUTING PCM in SELF-DIAGNOSTICS - INTRODUCTION article. If symptom or indication goes away, replace original PCM. If MIL does not come on, check MIL. If bulb is okay, check for open in Green/Orange wire between PCM 32-pin connector "A" terminal No. 18 and gauge assembly.
  4. Turn ignition off. Check No. 44 FI E/M (15-amp) fuse located in under-hood fuse/relay box. If fuse is okay, go to next step. If fuse is blown, repair short in White/Black wire between No. 44 FI E/M (15-amp) fuse and PGM-FI main relay.
  5. Check No. 13 FUEL PUMP (15-amp) fuse located in under-dash fuse/relay box. If fuse is okay, go to next step. If fuse is blown, repair short in Yellow/Green wire between No. 13 FUEL PUMP (15-amp) and PGM-FI main relay.
  6. Disconnect fuel injector and Idle Air Control (IAC) valve connectors. Turn ignition on. Using backprobe set, measure voltage between ground and PCM 25-pin connector "B" terminal No. 1 (Yellow/Black wire) and No. 9 (Yellow/Black wire), individually. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in suspect Yellow/Black wires between PCM 25-pin connector "B" and PGM-FI main relay. See appropriate wiring diagram in WIRING DIAGRAMS article. Also check for poor connections and loose wires at PGM-FI main relay. If connections are okay, check PGM-FI main relay. See SYSTEM & COMPONENT TESTING article.
  7. Reconnect fuel injector and IAC valve connectors. Using backprobe set, measure voltage between ground and PCM 25-pin connector "B" terminals No. 2 (Black wire), No. 10 (Black wire), No. 20 (Brown/Black wire) and No. 22 (Brown/Black wire) individually. If less than one volt exists, go to next step. If less than one volt does not exist, repair open in suspect wire(s) between PCM 25-pin connector "B" and G101 ground connector, located on thermostat housing.
  8. Using backprobe set, measure voltage ground and PCM 31-pin connector "C" terminals No. 19 (Yellow/Red wire) and No. 28 (Yellow/Blue wire), individually. If about 5 volts does not exist, go to next step. If about 5 volts exists, substitute a known-good PCM and recheck. See SUBSTITUTING PCM in SELF-DIAGNOSTICS - INTRODUCTION article. If symptom or indication goes away, replace original PCM.
  9. While measuring voltage between ground and PCM 31-pin connector "C" terminals No. 19 (Yellow/Red wire) and No. 28 (Yellow/Blue wire), individually, disconnect 3-pin MAP, TP and fuel tank pressure sensor connectors one at a time. If about 5 volts exist when a sensor connector is disconnected, replace that sensor. If about 5 volts do not exist when sensor connectors are disconnected, repair short in Yellow/Red wire or Yellow/Blue wire between suspect sensor and PCM 31-pin connector "C".
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