Chrysler 300M 2002 Service Manual page 2576

P0351-IGNITION COIL #1 CIRCUIT —
TEST
3 Turn the ignition off.
Disconnect the coil on plug harness connector.
Note: The following resistance measurement should be taken at 70-80
degrees F.
Measure the primary resistance of the Coil on plug.
Is the resistance between 0.6 and 0.9 of an ohm?
Yes → Go To 4
No
4 Turn the ignition off.
Disconnect the Coil on plug harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance between the Coil Driver circuit and ground.
Is the resistance below 5.0 ohms?
Yes → Repair the short to ground in the Coil Driver circuit.
No
5 Turn the ignition off.
Disconnect the Coil on plug harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the Coil Driver circuit from the Coil on plug connector to
the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 6
No
6 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, review repair.
Repair
7 Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Remove the ASD Relay from the PDC.
Measure the resistance of the ASD Relay Output circuit between the ASD Relay
connector and the Ignition Coil harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 8
No
ACTION
→ Replace the coil on plug.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 5
→ Repair the open Coil Driver circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Repair the open in the ASD Relay Output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - NGC
Continued
147
APPLICABILITY
All
All
All
All
All