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Diagnosis & Repair

  1. Remove glove box and passenger's side kick panel (if necessary) for access to ECM with electrical connectors still installed on ECM. See Figure.
  2. Using voltmeter, check voltage between body ground and terminal No. 1 (Red/White or Sky Blue wire) at ECM electrical connector E8. See Figure. This is the BATT terminal on ECM. There are 2 different wiring harnesses used and wire color varies according to wiring harness used. Voltage should be 9-14 volts. If voltage is not within specification, go to next step. If voltage is within specification, replace ECM.
  3. Remove EFI1 fuse (20-amp) and EFI2 fuse (5-amp) from fuse/relay box at driver's side front corner of engine compartment. Check both fuses. If fuses are okay, reinstall fuses. Check wiring harness and electrical connectors between EFI2 fuse and ECM. See WIRING DIAGRAMS article. It may be necessary to check wiring between battery and EFI1 fuse. For additional wiring for EFI1 fuse to the battery, see POWER DISTRIBUTION article in WIRING DIAGRAMS. If fuses are defective, replace fuse and check for short in wiring harness and components connected to EFI1 and EFI2 fuses. See WIRING DIAGRAMS article. Repair wiring as necessary.
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