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Symptom:
P0344-CAMSHAFT POSITION SENSOR INTERMITTENT
When Monitored and Set Condition:
P0344-CAMSHAFT POSITION SENSOR INTERMITTENT
When Monitored: Engine running or Cranking.
Set Condition: When the failure counter reaches 20. One Trip Fault.
GOOD TRIP EQUAL TO ZERO
WIRING HARNESS INSPECTION
(K6) 5 VOLT SUPPLY CIRCUIT OPEN OR SHORTED TO GROUND
TONE WHEEL/PULSE RING INSPECTION
CHECKING CKP SIGNAL WITH THE DRBIII LAB
CAMSHAFT POSITION SENSOR
(K44) CMP SIGNAL CIRCUIT OPEN
(K44) CMP SIGNAL CIRCUIT SHORT TO GROUND
(K44) CMP SIGNAL CIRCUIT SHORTED TO B+
(K44) CMP SIGNAL CIRCUIT SHORT TO (K6) 5 VOLTS
PCM
TEST
1
Ignition on, engine not running.
With the DRBIII , read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
Yes → Go To 2
→ Refer to the INTERMITTENT CONDITION symptom in the
No
2
Turn the ignition off.
With the DRBIII lab scope probe and the Miller special tool #6801, backprobe the
(K44) CMP Signal circuit in the CMP harness connector.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Ignition on, engine not running.
Observe the lab scope screen.
Start the engine.
Observe the lab scope screen.
Are there any irregular or missing signals?
Yes → Go To 3
→ Go To 8
No
POSSIBLE CAUSES
ACTION
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
DRIVEABILITY - NGC
139
APPLICABILITY
All
All
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