PRE-RELEASE
DTC P0201-P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P1248, P1249, P124A, P124B, P2147, P2148, P2150, P2151, P2153, P2154, P2156, or P2157
| DTC P0201-P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P1248, P1249, P124A, P124B, P2147, P2148, P2150, P2151, P2153, P2154, P2156, or P2157 |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| DTC Descriptors |
DTC P0201
Cylinder 1 Injector Control Circuit
DTC P0202
Cylinder 2 Injector Control Circuit
DTC P0203
Cylinder 3 Injector Control Circuit
DTC P0204
Cylinder 4 Injector Control Circuit
DTC P0261
Cylinder 1 Injector Control Circuit Low Voltage
DTC P0262
Cylinder 1 Injector Control Circuit High Voltage
DTC P0264
Cylinder 2 Injector Control Circuit Low Voltage
DTC P0265
Cylinder 2 Injector Control Circuit High Voltage
DTC P0267
Cylinder 3 Injector Control Circuit Low Voltage
DTC P0268
Cylinder 3 Injector Control Circuit High Voltage
DTC P0270
Cylinder 4 Injector Control Circuit Low Voltage
DTC P0271
Cylinder 4 Injector Control Circuit High Voltage
DTC P1248
Cylinder 1 Injector High Control Circuit Shorted to Control Circuit
DTC P1249
Cylinder 2 Injector High Control Circuit Shorted to Control Circuit
DTC P124A
Cylinder 3 Injector High Control Circuit Shorted to Control Circuit
DTC P124B
Cylinder 4 Injector High Control Circuit Shorted to Control Circuit
DTC P2147
Cylinder 1 Injector High Control Circuit Low Voltage
DTC P2148
Cylinder 1 Injector High Control Circuit High Voltage
DTC P2150
Cylinder 2 Injector High Control Circuit Low Voltage
DTC P2151
Cylinder 2 Injector High Control Circuit High Voltage
DTC P2153
Cylinder 3 Injector High Control Circuit Low Voltage
DTC P2154
Cylinder 3 Injector High Control Circuit High Voltage
DTC P2156
Cylinder 4 Injector High Control Circuit Low Voltage
DTC P2157
Cylinder 4 Injector High Control Circuit High Voltage
| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Short from Supply Circuit to Control Circuit |
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Direct Fuel Injector High Voltage Supply Cylinder 1
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P2147
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P0201
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P2148
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P1248
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Direct Fuel Injector High Voltage Control Cylinder 1
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P0261
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P0201
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P0262, P2148
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P1248
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Direct Fuel Injector High Voltage Supply Cylinder 2
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P2150
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P0202
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P2151
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P1249
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Direct Fuel Injector High Voltage Control Cylinder 2
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P0264
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P0202
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P0265, P2151
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P1249
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Direct Fuel Injector High Voltage Supply Cylinder 3
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P2153
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P0203
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P2154
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P124A
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Direct Fuel Injector High Voltage Control Cylinder 3
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P0267
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P0203
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P0268, P2154
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P124A
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Direct Fuel Injector High Voltage Supply Cylinder 4
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P2156
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P0204
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P2157
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P124B
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Direct Fuel Injector High Voltage Control Cylinder 4
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P0270
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P0204
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P0271, P2157
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P124B
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| Circuit/System Description |
The engine control module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. The ECM energizes each fuel injector by grounding the high voltage control circuit of that fuel injector. The ECM monitors the status of the fuel injector high voltage supply circuits and high voltage control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled.
| Conditions for Running the DTC |
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DTC P062B is not set.
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The engine is running for greater than 5 s.
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The ignition voltage is greater than 11 V.
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The DTCs run continuously when the above conditions are met.
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| Conditions for Setting the DTC |
P0201, P0202, P0203, or P0204
The ECM detects the injector high voltage supply circuit or the injector high voltage control circuit is open for greater than 2 s.P0261, P0264, P0267, or P0270
The ECM detects the injector high voltage control circuit is shorted to ground for greater than 2 s.P0262, P0265, P0268, or P0271
The ECM detects the injector high voltage control circuit is shorted to voltage for greater than 2 s.P1248, P1249, P124A, or P124B
The ECM detects the injector high voltage supply circuit is shorted to the injector high voltage control circuit for greater than 2 s.P2147, P2150, P2153, or P2156
The ECM detects the injector high voltage supply circuit is shorted to ground for greater than 2 s.P2148, P2151, P2154, or P2157
The ECM detects the injector high voltage supply circuit is shorted to voltage for greater than 2 s.| Action Taken When the DTC Sets |
DTCs P0201, P0202, P0203, P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P1248, P1249, P124A, P124B, P2147, P2148, P2150, P2151, P2153, P2154, P2156, and P2157 are Type A DTCs.
| Conditions for Clearing the DTC |
DTCs P0201, P0202, P0203, P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P1248, P1249, P124A, P124B, P2147, P2148, P2150, P2151, P2153, P2154, P2156, and P2157 are Type A DTCs.
| Diagnostic Aids |
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Performing the fuel injector coil test may help isolate an intermittent condition. Refer to
Fuel Injector Solenoid Coil Test
.
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If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector Control Circuit Status parameters. An Injector Control Circuit Status parameter will change from OK or Not Run to Fault if there is a condition with the circuit or a connection.
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| Reference Information |
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Fuel System Description
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
| 1. |
Use a scan tool to read the DTC Info. DTC P0685 or P1682 should not be set.
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| 2. |
If a DTC is set, refer to
Diagnostic Trouble Code (DTC) List - Vehicle
.
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| 3. |
Engine running, observe DTC Information with a scan tool. DTC P0201, P0202, P0203, P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P1248, P1249, P124A, P124B, P2147, P2148, P2150, P2151, P2153, P2154, P2156, or P2157 should not be set.
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| 4. |
Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.
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| 5. |
Ignition ON, observe the scan tool Cylinder 1-4 Injector Control Circuit Status parameters. Verify the Injector Control Circuit Status parameters display OK.
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| 6. |
Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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| Circuit/System Testing |
| 1. |
Ignition OFF, disconnect the fuel injector multi-way harness connector X160.
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| 2. |
Ignition ON, observe the appropriate scan tool Cylinder 1-4 Injector Control Circuit Status. The parameter should display Open.
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| 3. |
If not the specified value, test the appropriate high voltage supply circuit, ECM side, for a short to ground or the appropriate high voltage control circuit, ECM side, for a short to voltage. If the circuits test normal, replace the K20 ECM.
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| 4. |
Ignition ON, connect a test lamp between the appropriate high voltage supply circuit and the high voltage control circuit. The Injector Control Circuit Status should transition from Open to OK.
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| 5. |
If not the specified value, test for the following conditions in the ECM side of the harness:
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An open/high resistance in the high voltage supply circuit
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An open/high resistance in the high voltage control circuit
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A short to ground in the high voltage control circuit
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A short to voltage in the high voltage supply circuit
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If the circuits test normal, replace the K20 ECM.
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Ignition OFF, measure the resistance between the appropriate high voltage supply circuit and ground. The DMM should display OL Ω. |
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| 8. |
If less than the specified range, test the high voltage supply circuit and the high voltage control circuit for a short to ground. If the circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).
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Test for 2-3 Ω between the appropriate high voltage supply circuit and high voltage control circuit.
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If less than the specified range, test for a short between the high voltage supply circuit and high voltage control circuit. If the circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).
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| 11. |
If greater than the specified range, test the high voltage supply circuit and high voltage control circuit for an open/high resistance. If the circuits/connections test normal, test or replace the appropriate Q17 fuel injector.
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| Component Testing |
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Fuel Injector Solenoid Coil Test
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Fuel Injector Balance Test
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Direct Fuel Injector Replacement
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Control Module References
for ECM replacement, setup, and programming
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