Chrysler Sebring 2004 Service Manual page 2115

DRIVEABILITY - GAS
P1391-INTERMITTENT LOSS OF CMP OR CKP —
TEST
3 Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Ensure the Crankshaft Position Sensor and the Camshaft Position Sensor are
properly installed and the mounting bolt(s) tight.
Refer to any TSB that may apply.
Were any of the above conditions present?
Yes → Repair as necessary
→ Go To 4
No
4 Turn the ignition off.
Remove the Camshaft Position Sensor.
Inspect the Tone Wheel/Pulse Ring for damage, foreign material, or excessive
movement.
Were any problems found?
Yes → Repair or replace the Tone Wheel/Pulse Ring as necessary.
→ Go To 5
No
5 If there are no possible causes remaining, view repair.
Repair
6 Turn the ignition off.
With the DRBIII lab scope probe and the Miller special tool #6801, backprobe the
CKP Signal circuit in the CKP 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.
Start the engine.
Observe the lab scope screen.
Are there any irregular or missing signals?
Yes → Go To 7
→ Go To 10
No
7 Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Ensure the Crankshaft Position Sensor and the Camshaft Position Sensor are
properly installed and the mounting bolt(s) are tight.
Refer to any TSB that may apply.
Were any of the above conditions present?
Yes → Repair as necessary
→ Go To 8
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace the Camshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Continued
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APPLICABILITY
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