P0203

Tests 267 - 271:

Tests 272 - 274:

SYMPTOM
P0203 - INJECTOR # 3 CONTROL CIRCUIT

WHEN MONITORED
With battery voltage greater than 12 volts, the Auto Shutdown relay energized, injector pulse width less than 10 ms, and engine speed less than 3000 rpm.

SET CONDITION
This trouble code takes 0.64 - 10.0 seconds to set when no inductive kick is sensed 0.18 ms after injector turns OFF, and with no other injectors ON.

POSSIBLE CAUSES
- Open/high resistance in the ASD relay output circuit
- Fuel injector defective
- Wiring harness intermittent defect
- Open injector driver circuit
- Injector driver circuit shorted to ground
- PCM defective