Circuit Description
The exhaust camshaft position (CMP) sensor produces a 4X plus a sync signal for each revolution of the exhaust camshaft. These signals are for control of sequential fuel injection and for exhaust camshaft phaser control. The CMP is connected directly to the powertrain control module (PCM) and consists of the following circuits:
| • | A 12-volt reference circuit |
| • | A low reference circuit |
| • | A CMP sensor signal circuit |
If the PCM does not receive 4 CAM pulses within a calibrated amount of time, DTC P0365 will set.
DTC Descriptor
This Diagnostic procedure supports the following DTC:
DTC P0365 Exhaust Camshaft Position (CMP) Sensor Circuit
Conditions for Running the DTC
| • | The engine is running. |
| • | DTC P0365 runs continuously once the above conditions are met. |
Conditions for Setting the DTC
The PCM does not receive 4 CAM pulses within 3 seconds.
Action Taken When the DTC Sets
| • | The malfunction indicator lamp (MIL) will illuminate after 2 consecutive ignition cycles in which the diagnostic runs with the fault active. |
| • | The PCM records the operating conditions at the time when the diagnostic fails. This information stores in the Freeze Frame and Failure Records buffers. |
| • | A history DTC stores. |
Conditions for Clearing the MIL/DTC
| • | The MIL will turn OFF after 3 consecutive ignition cycles in which the diagnostic runs without a fault. |
| • | A history DTC will clear after 40 consecutive warm-up cycles without a fault. |
| • | Clear the DTCs with a scan tool. |
Diagnostic Aids
| • | The following conditions may cause this DTC to set: |
| - | Damage to the camshaft reluctor wheel |
| - | Damage to the CMP sensor |
| - | The sensor coming in contact with the reluctor wheel |
| - | Foreign material passing between the sensor and the reluctor wheel |
| • | If the condition is intermittent, refer to Intermittent Conditions . |
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Values | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Engine Controls Schematics Connector End View Reference: Powertrain Control Module Connector End Views or Engine Controls Connector End Views | ||||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | ||||||
2 | Attempt to start the engine. Does the engine start and run? | -- | Go to Step 3 | Go to Step 8 | ||||||
3 |
Does the scan tool parameter increment? | -- | Go to Step 4 | Go to Step 5 | ||||||
4 |
Did the DTC fail this ignition? | -- | Go to Step 5 | Go to Diagnostic Aids | ||||||
5 |
Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 8 | ||||||
6 |
Is the voltage more than the specified value? | 0.2 V | Go to Step 9 | Go to Step 7 | ||||||
Does the CMP Active Counter parameter count each time the test lamp contacts the circuit? | -- | Go to Step 11 | Go to Step 10 | |||||||
8 | Test the 12-volt reference circuit for the following conditions:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 12 | ||||||
9 | Test the low reference circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 12 | ||||||
10 | Test the signal circuit for the following conditions:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 12 | ||||||
11 | Test for an intermittent and for a poor connection at the CMP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 13 | ||||||
12 | Test for an intermittent and for a poor connection at the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 15 | ||||||
13 |
Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 14 | ||||||
14 | Replace the CMP sensor. Refer to Camshaft Position Sensor Replacement . Did you complete the replacement? | -- | Go to Step 16 | -- | ||||||
15 | Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 16 | -- | ||||||
16 |
Did the DTC fail this ignition? | -- | Go to Step 2 | Go to Step 17 | ||||||
17 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? | -- | Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information | System OK | ||||||
