Dodge ZB 2005 Service Manual page 1278

P1398-MIS-FIRE ADAPTIVE NUMERATOR AT LIMIT —
TEST
2 Turn ignition off.
Visually inspect the related wire harness connectors. Look for broken, bent,
pushed out, or corroded terminals.
NOTE: Visually inspect the related wire harness. Look for any chafed,
pierced, pinched, or partially broken wires.
NOTE: Make sure the Camshaft Position Sensor is tight.
Note: Refer to any technical service bulletins that may apply.
Were any problems found?
Yes → Repair as necessary.
→ Go To 3
No
3 Note: Visually inspect the Crankshaft Position Sensor and related wire
harness connectors. Look for broken, bent, pushed out, or corroded termi-
nals.
NOTE: Visually inspect the related wire harness. Look for any chafed,
pierced, pinched, or partially broken wires.
NOTE: Verify the Crank Position Sensor is properly installed.
Were any problems found?
Yes → Repair as necessary.
→ Go To 4
No
4 Disconnect and remove the Crankshaft Position Sensor.
Inspect the tone wheel/flexplate slots for damage, foreign material, or excessive
movement.
Is the tone wheel/flexplate free from defects?
Yes → Go To 5
→ Repair/replace tone wheel/flex plate as necessary.
No
5 With the DRBIII lab scope probe and the Miller special tool #6801, back probe the
(K24) CKP Signal circuit in the PCM 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 and observe the lab scope screen for any erratic CKP Sensor pulses.
Were any erratic Crank Position signals detected.
Yes.
No.
NOTE: Turn the ignition off before continuing.
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace the Crankshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Go To 6
DRIVEABILITY - GAS
157
Continued
APPLICABILITY
All
All
All
All