Test V: Camshaft Position (CMP) Sensor
PINPOINT TEST V: CAMSHAFT POSITION (CMP) SENSORFlow Chart:
This pinpoint test is intended to diagnose the following:
- CMP sensor (12K073)
- harness circuits: CMP+, CMP-, and CMPO
- fuel injector control module (FICM)
- powertrain control module (PCM) (12A650)
CMP Sensor Connector
CMP Sensor Connector:
FICM-C Connector
FICM-C Connector:
PCM Connector
PCM Connector:
-----------------------------------------------
V1 : PRELIMINARY DIAGNOSIS FOR DIAGNOSTIC TROUBLE CODES (DTCS) P0340, P0341, OR P2614
NOTE:
- Some DTCs require that the engine goes through more than one ignition cycle to set.
- DTCs P2617 and P2614 may set simultaneously after an engine stalling event.
- DTC P2614 is calibrated to an increment counter. Setting the DTC requires more than 10 consecutive events with a concern present during the crank or the run mode. Carry out the required number of ignition cycles from ON to START to ON (cycling to OFF resets the timer) and then carry out the key on engine off (KOEO) or key on engine running (KOER) self-test Quick Test Description
- Carry out a visual inspection.
- Retrieve and record all DTCs
- Record the freeze frame data
- Clear the DTCs.
- Carry out the KOEO and KOER self-test. Quick Test Description
- Are DTCs P0340, P0341 or P2614 present?
-----------------------------------------------
V2 : DIAGNOSTIC TROUBLE CODES (DTCS) P0340, P0341, OR P2614
- Does the engine start?
-----------------------------------------------
V3 : ATTEMPT TO RECREATE THE DTCS
- Clear the DTCs.
- Ignition ON, engine running.
- Increase the engine speed to greater than 1,500 RPM for 10 seconds. Repeat this 2 times.
- Ignition ON, engine OFF.
- Carry out the KOEO and KOER self-test. Quick Test Description
- Are DTCs P0340, P0341 or P2614 present?
-----------------------------------------------
V4 : CHECK THE RESISTANCE OF THE CMP SENSOR
- Ignition OFF.
- PCM connector disconnected.
- Measure the resistance between:
- Is the resistance between 0.8 kOhm - 1 kOhm?
-----------------------------------------------
V5 : CHECK FOR AN INTERMITTENT SHORT CIRCUIT
- PCM connector connected.
- Ignition ON, engine OFF.
- Access the PCM and monitor the CMP_F PID.
- Wiggle the harness
- Is a concern present?
-----------------------------------------------
V6 : CONFIRM A PCM CONCERN
- Clear the DTCs.
- Carry out the KOEO and KOER self-test. Quick Test Description
- Are DTCs P0340 or P0341 present?
-----------------------------------------------
V7 : CHECK THE CMP SENSOR CIRCUITS FOR A SHORT TO GROUND
- CMP Sensor connector disconnected.
- Inspect the CMP sensor connector for damaged or corroded pins
- Measure the resistance between:
- Are the resistances greater than 10 kOhm?
-----------------------------------------------
V8 : CHECK THE CMP SENSOR CIRCUITS FOR AN OPEN
- Measure the resistance between:
- Are the resistances less than 5 Ohm?
-----------------------------------------------
V9 : CHECK THE CAMSHAFT POSITION SIGNAL FOR A SHORT TO VOLTAGE
- Ignition OFF.
- PCM connector disconnected.
- FICM_C connector disconnected.
- Ignition ON, engine OFF.
- Measure the voltage between:
- Is any voltage present?
-----------------------------------------------
V10 : CHECK THE CAMSHAFT POSITION SIGNAL FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between:
- Is the resistance greater than 10 kOhm?
-----------------------------------------------
V11 : CHECK THE CAMSHAFT POSITION SIGNAL FOR AN OPEN
- Measure the resistance between:
- Is the resistance less than 5 Ohm?
-----------------------------------------------
V12 : CHECK THE CMP SENSOR
- Inspect the CMP sensor for misalignment and improper installation
- Remove the CMP sensor
- Inspect the CMP sensor for damage
- Is a concern present?
-----------------------------------------------
V13 : CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Visually inspect for:
- pushed out pins
- corrosion
- Connect all the PCM connectors and make sure they seat correctly.
- Carry out the PCM self-test and verify the concern is still present.
- Is the concern still present?
