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Tahoe / Yukon Service Manual

DTC P02EE, P02EF, or P02F0-P02F3

Engine Controls and Fuel - 3.0L LM2 Diesel | Diagnostic Information and Procedures | Document ID: 5398964 Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis: Strategy Based Diagnosis An overview of each diagnostic category can be found here: Diagnostic Procedure Instructions DTC Descriptor DTC P02EE Cylinder 1 Fuel Injector Control Performance DTC P02EF Cylinder 2 Fuel Injector Control Performance DTC P02F0 Cylinder 3 Fuel Injector Control Performance DTC P02F1 Cylinder 4 Fuel Injector Control Performance DTC P02F2 Cylinder 5 Fuel Injector Control Performance DTC P02F3 Cylinder 6 Fuel Injector Control Performance Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Short Between Circuits
Control — Terminal 1 @ Q17A Fuel Injector 1 P2147 P0201 P2148 P1248
Control — Terminal 2 @ Q17A Fuel Injector 1 P0261 P0201 P0262 P1248
Control — Terminal 1 @ Q17B Fuel Injector 2 P2150 P0202 P2151 P1249
Control — Terminal 2 @ Q17B Fuel Injector 2 P0264 P0202 P0265 P1249
Control — Terminal 1 @ Q17C Fuel Injector 3 P2153 P0203 P2154 P124A
Control — Terminal 2 @ Q17C Fuel Injector 3 P0267 P0203 P0268 P124A
Control — Terminal 1 @ Q17D Fuel Injector 4 P2147 P0204 P2148 P124B
Control — Terminal 2 @ Q17D Fuel P0270 P0204 P0271 P124B
Injector 4 © 2023 Gener al Motors. All rights reserved .
Circuit Short to Ground Open/High Resistance Short to Voltage Short Between Circuits
Control — Terminal 1 @ Q17E Fuel Injector 5 P2150 P0205 P2151 P124C
Control — Terminal 2 @ Q17E Fuel Injector 5 P0273 P0205 P0274 P124C
Control — Terminal 1 @ Q17F Fuel Injector 6 P2153 P0206 P2154 P124D
Control — Terminal 2 @ Q17F Fuel Injector 6 P0276 P0206 P0277 P124D

Typical Scan Tool Data Cylinder 1–6 Fuel Injector Control Circuit Status

Circuit Short to Ground Open Short to Voltage Short between the circuits
Operating Conditions: Engine at Idle Parameter Normal Range: Not Run or Okay
Control — Terminal 1 High Control Circuit Low Open High Control Circuit High High Control Circuit Shorted to Control Circuit
Control — Terminal 2 Control Circuit Low Open Control Circuit High High Control Circuit Shorted to Control Circuit

Circuit/System Description For an overview of the component/system, refer to: Fuel System Description

Circuit Description
Control — Terminal 1 The output circuit is switched to 50 V to activate the component.
Control — Terminal 2 The output circuit is switched to ground to activate the component.
Component Description
K20 Engine Control Module The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly.
Q17 Fuel Injector Fuel injectors are solenoid valves that inject fuel either into the intake system or directly into the cylinder. The amount of fuel injected depends on the length of the electrical pulse that is applied.

Conditions for Running the DTC P02EE DTC P0201, P020A, P0261, P0262, P062B, P062D, P1248, P2147, P2148 = Not set Engine is Running Ignition and Start Signal = Greater than 11 V Frequency the DTC runs = Continuously — After the running conditions are met P02EF DTC P0202, P0203, P020B, P0264, P0265, P0267, P0268, P062B, P062D, P1249, P124A, P2150, P2151 = Not set Engine is Running Ignition and Start Signal = Greater than 11 V Frequency the DTC runs = Continuously — After the running conditions are met P02F0 DTC P0203, P0204, P020C, P0267, P0268, P0270, P0271, P062B, P062D, P124A, P124B, P2147, P2148, P2153, P2154 = Not set Engine is Running Ignition and Start Signal = Greater than 11 V Frequency the DTC runs = Continuously — After the running conditions are met P02F1 DTC P0202, P0204, P020D, P0264, P0265, P0270, P0271, P062B, P062D, P1249, P124B, P2147, P2148, P2150, P2151 = Not set Engine is Running Ignition and Start Signal = Greater than 11 V Frequency the DTC runs = Continuously — After the running conditions are met P02F2 DTC P0205, P020E, P0273, P0274, P062B, P062D, P124C, P2150, P2151 = Not set Engine is Running Ignition and Start Signal = Greater than 11 V Frequency the DTC runs = Continuously — After the running conditions are met P02F3 DTC P0206, P020F, P0276, P0277, P062B, P062D, P124D, P2153, P2154 = Not set Engine is Running Ignition and Start Signal = Greater than 11 V Frequency the DTC runs = Continuously — After the running conditions are met Conditions for Setting the DTC Control Circuit — High to Low Current Transition Time = Not within a calibrated range Actions Taken When the DTC Sets DTCs listed in the DTC Descriptor category = Type B DTC Conditions for Clearing the DTC DTCs listed in the DTC Descriptor category = Type B DTC Reference Information Schematic Reference Engine Controls Schematics Connector End View Reference Master Electrical Component List Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs DTC Type Reference Powertrain Diagnostic Trouble Code (DTC) Type Definitions Scan Tool Reference Control Module References Circuit/System Verification

  1. Engine running.
  2. Verify there are no DTCs set related to the following component/system: Q17 Fuel Injector ⇒ If a related DTC is set Refer to: Diagnostic Trouble Code (DTC) List - Vehicle ⇓ If a related DTC is not set
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  4. Verify the DTC does not set. ⇒ If the DTC sets Refer to: Circuit/System Testing ⇓ If the DTC is not set
  5. All OK. Circuit/System Testing
  6. Ignition/Vehicle » Off
  7. Disconnect the electrical connector: X160 Inline Harness Connector
  8. Ignition » On / Vehicle » In Service Mode
  1. Test for 16 V (±3 V) between the test points: { Q17A Fuel Injector 1 } Control circuit terminal 1 & Ground { Q17B Fuel Injector 2 } Control circuit terminal 3 & Ground { Q17C Fuel Injector 3 } Control circuit terminal 5 & Ground { Q17D Fuel Injector 4 } Control circuit terminal 7 & Ground { Q17E Fuel Injector 5 } Control circuit terminal 9 & Ground { Q17F Fuel Injector 6 } Control circuit terminal 11 & Ground ⇒ If not the specified value Refer to: DTC P0201-P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P1248-P124D, P2147, P2148, P2150, P2151, P2153, or P2154 ⇓ If the specified value
  2. Test for 0.20 V (±0.17 V) between the test points: { Q17A Fuel Injector 1 } Control circuit terminal 2 & Ground { Q17B Fuel Injector 2 } Control circuit terminal 4 & Ground { Q17C Fuel Injector 3 } Control circuit terminal 6 & Ground { Q17D Fuel Injector 4 } Control circuit terminal 8 & Ground { Q17E Fuel Injector 5 } Control circuit terminal 10 & Ground { Q17F Fuel Injector 6 } Control circuit terminal 12 & Ground ⇒ If not the specified value Refer to: DTC P0201-P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P1248-P124D, P2147, P2148, P2150, P2151, P2153, or P2154 ⇓ If the specified value
  1. Test for less than 3 Ω between the test points: { Q17A Fuel Injector 1 } Control circuit terminal 1 & Control circuit terminal 2 { Q17B Fuel Injector 2 } Control circuit terminal 3 & Control circuit terminal 4 { Q17C Fuel Injector 3 } Control circuit terminal 5 & Control circuit terminal 6 { Q17D Fuel Injector 4 } Control circuit terminal 7 & Control circuit terminal 8 { Q17E Fuel Injector 5 } Control circuit terminal 9 & Control circuit terminal 10 { Q17F Fuel Injector 6 } Control circuit terminal 11 & Control circuit terminal 12 ⇒ If 3 Ω or greater 6.1. Verify a condition does not exist with the component: Q17 Fuel Injector » Refer to: Component Testing ⇒ If a condition exists » Replace the component: Q17 Fuel Injector ⇒ If no condition exists » Repair the open/high resistance in the circuit. ⇓ If less than 3 Ω
  2. Test or replace the component: Q17 Fuel Injector Component Testing
  3. Ignition/Vehicle » Off
  4. Disconnect the electrical connector: Q17 Fuel Injector
  1. Test for 0.2 to 1.5 Ω between the test points: Component terminal 1 & Component terminal 2 ⇒ If not between 0.2 and 1.5 Ω Replace the component: Q17 Fuel Injector ⇓ If between 0.2 and 1.5 Ω
  2. Test for infinite resistance between the test points: Each terminal of the component & The component’s housing ⇒ If less than infinite resistance Replace the component: Q17 Fuel Injector ⇓ If infinite resistance
  3. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification High Pressure Diesel Fuel Injector Replacement For control module replacement, programming, and setup refer to: Control Module References