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• | 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 00, P0202 00, P0203 00, or P0204 00 | - | - |
Fuel Injector 1 Control | P0261 00 | P0201 00 | P0262 00 | - |
Fuel Injector 2 Control | P0264 00 | P0202 00 | P0265 00 | - |
Fuel Injector 3 Control | P0267 00 | P0203 00 | P0268 00 | - |
Fuel Injector 4 Control | P0270 00 | P0204 00 | P0271 00 | - |
1. Open fuse, cranks no start 2. Cranks 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.
• | DTCs P0607 00, P0628 00, P0629 00 are not set. |
• | The battery voltage is greater than 9 V. |
• | The engine is running. |
• | The engine speed is between 320-6016 RPM |
• | All fuel injectors are active |
• | 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 3.2 s. |
DTCs P0201 00, P0202 00, P0203 00, P0204 00, P0261 00, P0262 00, P0264 00, P0265 00, P0267 00, P0268 00, P0270 00, and P0271 00 are Type B DTCs.
DTCs P0201 00, P0202 00, P0203 00, P0204 00, P0261 00, P0262 00, P0264 00, P0265 00, P0267 00, P0268 00, P0270 00, and P0271 00 are Type B DTCs.
Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis : Special Tool → Scan Tool
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
EL-35616-E Test Lamp – Probe Kit
For equivalent regional tools, refer to Special Tools .
⇒ | 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 appropriate Q17 Fuel Injector. |
⇒ | If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module. |
⇒ | If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Fuel Injector Replacement : 1.6L LDE, LXV, 1.8L 2H0, and LUW |
• | Control Module References for ECM replacement, setup, and programming |
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