P0203

(P0203) FUEL INJECTOR #3 CIRCUIT





When Monitored and Set Condition
^ When Monitored: With battery voltage greater than 10 volts. Engine Control Relay energized. Engine speed less than 3000 RPM.
^ Set Condition: No inductive spike is detected after injector turn off. One Trip Fault.

POSSIBLE CAUSES
- INJECTOR CONTROL CIRCUIT OPEN
- FUSED ENGINE CONTROL RELAY OUTPUT CIRCUIT OPEN
- INJECTOR CONTROL CIRCUIT SHORT TO GROUND
- FUSED ENGINE CONTROL RELAY OUTPUT CIRCUIT SHORT TO INJECTOR CONTROL CIRCUIT
- FUEL INJECTOR
- POWERTRAIN CONTROL MODULE



Diagnostic Test
1. CHECK FOR CURRENT DTC





Turn the ignition on. With the DRBIII, read PCM DTCs.
Is this DTC present?
Yes >> For complete diagnosis of this DTC, refer to (P0201) FUEL INJECTOR #1 CIRCUIT P0201
No >> Go To 2

2. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.

Note: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.

Note: Check for any Technical Service Bulletins that may apply.

Were there any problems found?
Yes >> Repair as necessary. Perform POWERTRAIN VERIFICATION TEST - VER 2 Powertrain Verification Test - Ver 2.
No >> The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.