Troubleshooting

Illustration 33 g02373637
Typical example of the harness connector for the fuel
injectors
Illustration 34 g02373216
(1) Cylinder 3 injector supply
(2) Cylinder 2 injector supply
(16) Cylinder 1 injector supply
(17) Cylinder 4 injector supply
(31) Cylinder 3 injector return
(32) Cylinder 1 injector return
(46) Cylinder 2 injector return
(48) Cylinder 4 injector return
Electrical Shock Hazard. The electronic unit injec-
tors use DC voltage. The ECM sends this voltage
to the electronic unit injectors. Do not come in
contact with the harness connector for the elec-
tronic unit injectors while the engine is operating.
Failure to follow this instruction could result in
personal injury or death.
UENR0612-07 155
Circuit Tests
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