P0016–CRANKSHAFT / CAMSHAFT TIMING MISALIGNMENT
For a complete wiring diagram Refer to Section 8W.
Possible Causes
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(K44) ERRATIC CAM POSITION SENSOR 1 SIGNAL
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CAMSHAFT POSITION SENSOR TONE WHEEL/PULSE RING
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(K24) ERRATIC CRANKSHAFT POSITION SENSOR SIGNAL
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CRANKSHAFT POSITION SENSOR MAGNETIC RING
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CAMSHAFT POSITION SENSOR
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CRANKSHAFT POSITION SENSOR
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TIMING GEAR MISALIGNMENT/INCORRECT VALVE TIMING
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Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
Diagnostic Test
1.
ACTIVE DTC
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure
to follow these instructions can result in personal injury or death.
With the scan tool clear the DTC(s).
Start the engine and run until operating temp is reached.
If the DTC does not reset it may be necessary to test drive the vehicle.
Did this DTC set again?
Yes
No
2.
CHECKING THE (K44) CMP SIGNAL WITH A LAB SCOPE
With a lab scope, backprobe the (K44) CMP Signal circuit at the CMP Sensor harness connector.
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure
to follow these instructions can result in personal injury or death.
Start the engine.
Observe the lab scope screen.
NOTE:
The CMP Sensor is a hall-effect type sensor that produces a 5–volt digital (square wave) signal.
Are there any irregular or missing signals?
Yes
No
3.
CMP WIRE HARNESS INSPECTION
Turn the ignition off.
Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
Make sure the Crankshaft Position Sensor and the Camshaft Position Sensor are properly installed and the mounting bolt(s) are torqued to their proper specification.
Refer to any TSBs that may apply.
Were any of the above conditions present?
Yes
No
4.
TONE WHEEL/PULSE RING INSPECTION
Remove the Camshaft Position Sensor.
Inspect the Tone Wheel/Pulse Ring for damage, foreign material, or excessive movement.
Were any problems found?
Yes
No
5.
CAMSHAFT POSITION SENSOR
If there are no possible causes remaining, view repair.
Repair
6.
ERRATIC CMP SIGNAL
Turn the ignition off.
Remove the lab scope probe.
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure
to follow these instructions can result in personal injury or death.
Ignition on, engine not running.
With scan tool, erase DTCs.
Start the engine.
Gently tap on and wiggle the Cam Position Sensor.
Ignition on, engine not running.
Inspect the Sensor connector and harness connector, and inspect the ECM connector and harness connector for loose, bent, corroded, or pushed out pins/terminals.
Inspect the related wire harness and the splices in the CMP circuit.
Did this DTC set again?
Yes
No
7.
CHECKING THE (K24) CKP SIGNAL WITH A LAB SCOPE
Turn the ignition off.
With a lab scope, backprobe the (K24) CKP Signal circuit at the CKP harness connector.
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure
to follow these instructions can result in personal injury or death.
Start the engine.
Observe the lab scope screen.
NOTE:
The CKP Sensor is a hall-effect type sensor that produces a 5–volt digital (square wave) signal.
Are there any irregular or missing signals?
Yes
No
8.
CKP WIRE HARNESS INSPECTION
Turn the ignition off.
Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
Make sure the Crankshaft Position Sensor and the Camshaft Position Sensor are properly installed and the mounting bolt(s) are torqued to their proper specification.
Refer to any TSBs that may apply.
Were any of the above conditions present?
Yes
No
9.
MAGNETIC RING INSPECTION
Remove the Crankshaft Position Sensor.
Inspect the Magnetic Ring for damage, foreign material, or excessive movement.
Were any problems found?
Yes
No
10.
ERRATIC CKP SIGNAL
NOTE:
The conditions that set this DTC are not present at this time. The following test may help in identifying the intermittent condition.
WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure
to follow these instructions can result in personal injury or death.
Start the engine.
Gently tap on and wiggle the Crank Position Sensor.
Turn the ignition off.
Inspect the Sensor connector and harness connector, and inspect the ECM connector and harness connector for loose, bent, corroded, or pushed out pins/terminals.
Inspect the related wire harness and the splices in the CKP circuits.
Were any problems found?
Yes
No