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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 provide an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Intake Camshaft Position Sensor 5V Reference Circuit | P0452 00, P0532 00, P0641 00 | P0340 00, P0365 00 | P0641 00, P0533 00 | - |
Exhaust Camshaft Position Sensor 5V Reference Circuit | P0452 00, P0532 00, P0641 00 | P0365 00 | P0641 00, P0533 00 | - |
Intake camshaft position sensor signal circuit | P0340 00 | P0340 00 | P0340 00 | P0341 00 |
Exhaust Camshaft Position Sensor Signal Circuit | P0365 00 | P0365 00 | P0365 00 | P0366 00 |
Inlet Camshaft Position Sensor Low Reference | - | P0340 00 | P0340 00 | - |
Exhaust Camshaft Position Sensor Low Reference | - | P0365 00 | P0365 00 | - |
Each camshaft is equipped with a camshaft position sensor that the engine control module (ECM) monitors. The camshaft position sensor is a hall effect switch that works in conjunction with a 4X reluctor wheel. The reluctor wheels are mounted to the camshaft position actuators that are mounted to the end of the camshafts. The ECM uses the camshaft position sensor signals in order to determine the position of the camshafts. The ECM supplies 5 V to the camshaft position sensors on the 5 V reference circuits and supplies a ground on the low reference circuits. The camshaft position sensors provide a signal to the ECM on the signal circuits.
• | DTC P0101 00, P0102 00, P0103 00, P0335 00, P0336 00, P0641 00, or P0651 00 are not set. |
• | The engine is cranking or running. |
• | The mass air flow (MAF) is greater than 3 g/s. |
• | The DTCs run continuously when the above conditions are met. |
• | The ECM detects that the starter is commanded ON, and the engine has been cranking for greater than 2 s, without a camshaft position sensor pulse. |
• | The ECM detects that the engine has started, but did not receive a camshaft position sensor pulse during the first engine revolution. |
• | The ECM detects that the engine is running, but does not receive a camshaft position sensor pulse for 80 out of 100 engine cycles. |
• | DTCs P0340 00, and P0365 00 are Type B DTCs. |
• | The camshaft position actuator is commanded to the park position. |
DTCs P0340 00, and P0365 00 are Type B DTCs.
With a DTC set, the engine may crank for an extended period of time during start-up.
Camshaft Actuator System Description
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
⇒ | If DTC P0641 00 is set, refer to DTC P0641, P0651, P0697, or P06A3 . |
⇒ | If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module. |
⇒ | If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module. |
⇒ | If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module. |
⇒ | If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module. |
⇒ | If greater than the specified range, test the signal 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.
• | Control Module References for Engine Control Module replacement, setup, and programming |
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