• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Ignition 1 Voltage - Fuse to Splice | ¹ | ² | -- | -- |
Ignition 1 Voltage - Splice to Injector | ¹ | P0201, P0202, P0203, P0204, P0205, or P0206 | -- | -- |
Fuel Injector 1 Control | P0201 | P0201 | P0201 | -- |
Fuel Injector 2 Control | P0202 | P0202 | P0202 | -- |
Fuel Injector 3 Control | P0203 | P0203 | P0203 | -- |
Fuel Injector 4 Control | P0204 | P0204 | P0204 | -- |
Fuel Injector 5 Control | P0205 | P0205 | P0205 | -- |
Fuel Injector 6 Control | P0206 | P0206 | P0206 | -- |
¹Open fuse, Cranks no start ²Cranks no start |
The control module enables the appropriate fuel injector pulse for each cylinder. Ignition voltage is supplied to the fuel injectors. The control module controls each fuel injector by grounding the control circuit via a solid state device called a driver. The control module monitors the status of each driver. If the control module detects an incorrect voltage for the commanded state of the driver, a fuel injector control circuit DTC sets.
• | The engine is running. |
• | The ignition voltage is more than 11 volts for 5 seconds. |
• | These DTCs run continuously when the above conditions are met. |
• | The control module detects an incorrect voltage on the fuel injector control circuit. |
• | The above condition is met for 1 second. |
DTCs P0201-P0206 are Type B DTCs.
DTCs P0201-P0206 are Type B DTCs.
Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
J 35616-200 Test Light Probe Kit
Key ON, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205 or P0206 should not be set.
⇒ | If the test lamp does not illuminate, test the ignition circuit for a short to ground, or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test or replace the fuel injector. |
• | Injector 1 terminal F |
• | Injector 2 terminal G |
• | Injector 3 terminal H |
• | Injector 4 terminal B |
• | Injector 5 terminal C |
• | Injector 6 terminal D |
⇒ | If the test lamp is always ON, test the appropriate control circuit for a short to ground. If the circuit tests normal, replace the ECM. |
⇒ | If the test lamp is always OFF, test the appropriate control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM. |
• | Injector 1 terminal F |
• | Injector 2 terminal G |
• | Injector 3 terminal H |
• | Injector 4 terminal B |
• | Injector 5 terminal C |
• | Injector 6 terminal D |
⇒ | If the resistance is not within the specified range, test for a short to ground or an open/high resistance between X104 and the appropriate fuel injector harness connector. If the circuits test normal, test or replace the affected fuel injector. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for ECM replacement, setup, and programming |