Diagnostic Test

1. Turn the ignition on.
2. With the scan tool, read and record all DTCs and freeze frame data in the PCM for future reference.
   NOTE:

   If DTC P1524 is also set, Diagnose and repair it before continuing with this test.

3. With the scan tool, erase DTCs in the PCM.
4. Test drive or operate the vehicle in accordance with the Monitored and Set conditions for this DTC.
5. With the scan tool, read DTCs.

   Is the DTC active or pending at this time?

   Yes 

   • Go To  3

   No 

   • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .

Were there multiple Camshaft Position Slow Response DTCs present?

Yes 

• Go To  4

No 

• Go To  5

1. The following items should be checked before continuing with this procedure. Failure to do so may lead to misdiagnosis.
   • LOW ENGINE OIL LEVEL
   • INCORRECT ENGINE OIL FILTER (DOES NOT MEET OEM SPECIFICATIONS)
   • DETERIORATED OR DIRTY OIL
   • CONTAMINATED ENGINE OIL
   • INCORRECT ENGINE OIL VISCOSITY
   • AERATED ENGINE OIL

   Were any of the above conditions present?

   Yes 

   • Repair as necessary.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  10

1. Turn the ignition off.
2. Disconnect the VVT Intake Solenoid harness connector.
3. Measure the resistance between ground and the VVT Intake Solenoid 1/1 Ground circuit at the VVT Intake Control 1/1 harness connector.

   Is the resistance below 2.0 Ohms?

   Yes 

   • Go To  6

   No 

   • Repair the VVT Intake Solenoid 1/1 Ground circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Turn the ignition on.
2. Using a 12-volt test light connected to ground, probe the (K76) VVT Intake Solenoid 1/1 Control circuit in the VVT Intake Solenoid 1/1 harness connector.
3. With the scan tool, actuate the VVT Intake Solenoid 1/1 ON.
   NOTE:

   The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

   Is the test light illuminated and bright?

   Yes 

   • Go To  7

   No 

   • Go To  9

1. Turn the ignition off.
2. Remove the VVT Intake Solenoid 1/1.
3. Reconnect the VVT Intake Solenoid 1/1 harness connector.
4. Turn the ignition on.
5. With the scan tool, actuate the VVT Intake Solenoid 1/1 to the ON and OFF positions several times.

   Does the VVT Intake Solenoid 1/1 move freely during actuation?

   Yes 

   • Go To  8

   No 

   • Replace the VVT Intake Solenoid 1/1 in accordance with the Service Information.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Turn the ignition off.
2. Move the VVT Intake Solenoid 1/1 to another VVT Solenoid position that does not have a fault logged against it.
3. Reconnect the solenoid harness connectors.
4. Turn the ignition on.
5. With the scan tool, erase DTCs in the PCM.
6. Test drive the vehicle under the conditions in which the fault was set.
7. With the scan tool, read DTCs.

   Did the DTC move with the solenoid or stay with the original camshaft?

   Moved with the solenoid 

   • Replace the VVT Intake Solenoid 1/1 in accordance with the Service Information.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   Stayed with the original camshaft 

   • Replace the Cam Phaser assembly in accordance with the Service Information. Refer to ASSEMBLY, VARIABLE VALVE TIMING, PHASER / OIL CONTROL VALVE, REMOVAL .
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Turn the ignition off.
   CAUTION:

   Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.

2. Disconnect the PCM C2 harness connector and connect the (special tool #10436, Adapter, GPEC Diagnostic).
3. Measure the resistance of the (K76) VVT Intake Solenoid 1/1 Control circuit between the VVT Intake Solenoid 1/1 harness connector and the GPEC Adaptor.

   Is the resistance below 3.0 Ohms?

   Yes 

   • Go To  12

   No 

   • Repair the (K76) VVT Intake Solenoid 1/1 Control circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Back probe the ground circuit at one of the VVT Solenoid harness connectors.
2. Turn the ignition on.
3. With the scan tool, actuate the VVT Solenoid ON.
4. Measure the voltage between ground and the VVT Solenoid Ground circuit during actuation.
   NOTE:

   There should be no voltage on the ground circuit if the circuit has a good ground.

5. Repeat this check at all of the VVT Solenoids and the Oil Pump Solenoid.

   Is there any voltage present on the ground circuit for any of the solenoids?

   Yes 

   • Repair the ground circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  11

1. Install an oil pressure gauge and check the engine oil pressure.
2. Check the engine mechanical condition (i.e. proper oil drain back, oil sludge, etc.)

   Were any problems found?

   Yes 

   • Perform the appropriate repairs.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  12

1. Turn the ignition off.
2. Inspect the wiring and connectors at the Powertrain Control Module (PCM).
3. Look for any chafed, pierced, pinched, or partially broken wires.
4. Look for broken, bent, pushed out, or corroded terminals.
5. Perform any Service Bulletins that apply.

   Were any problems found?

   Yes 

   • Repair as necessary.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to POWERTRAIN CONTROL MODULE (PCM), REMOVAL .
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .