Chrysler Concorde 2004 Service Manual page 789

P0300-MULTIPLE CYLINDER MISFIRE —
TEST
14 Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Ignition on, engine not running.
With the DRBIII , actuate the ASD Relay.
Using a 12-volt test light connected to ground, probe the ASD Relay Output circuit at
the Ignition Coil harness connector.
Does the test light illuminate brightly?
Yes → Go To 15
→ Repair the ASD Relay Output circuit.
No
15 Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Using a 12-volt test light connected to 12-volts, probe the Ignition Coil Control
circuit.
Crank the engine for 5 second while observing the test light.
Does the test light blink/flicker?
Yes → Replace the Ignition Coil.
→ Go To 16
No
16 Turn the ignition off.
Disconnect the Ignition Coil 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.
Check the Coil Control circuit.
Was a problem found with the Coil Control circuit?
Yes → Repair the Coil Control circuit.
→ NOTE: Before continuing, check the PCM harness connector
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
terminals for corrosion, damage, or terminal push out. Repair as
necessary. Replace and program the Powertrain Control Module
in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
DRIVEABILITY - NGC
Continued
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APPLICABILITY
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