Chrysler Concorde 2004 Service Manual page 816

DRIVEABILITY - NGC
P0351-IGNITION COIL #1 CIRCUIT —
TEST
2 Turn the ignition off.
Disconnect the coil on plug harness connector.
Ignition on, engine not running.
With the DRBIII , actuate the ASD Relay.
Using a 12-volt test light connected to ground, check the ASD Relay Output circuit at
the Coil on plug harness connector.
Does the test light illuminate brightly?
Yes → Go To 3
→ Go To 7
No
Stop All Actuations
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
→ Replace the coil on plug.
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 Control circuit and ground.
Is the resistance below 5.0 ohms?
Yes → Repair the short to ground in the Coil Control circuit.
→ Go To 5
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 Control 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
→ Repair the open Coil Control circuit.
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
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Continued
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APPLICABILITY
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