TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
The resistance of a 8.3L Primary Ignition coil is 0.53 to 0.65 of an ohm.
Measure the resistance of the primary Ignition coil.
Is the resistance within the appropriate specification?
All
Yes
→ Go To 4
No
→ Replace the Ignition coil.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
4
Using a 12-volt test light connected to a 12-volt source, probe the Ignition Coil Driver
circuit.
Crank the engine for 5 seconds while observing the test light.
What is the condition of the test light while cranking the engine?
All
Brightly blinking.
Replace the Ignition Coil.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
ON constantly.
Go To
5
OFF constantly.
Go To
6
5
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance between the Ignition Coil Control circuit and ground.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the Ignition Coil Control circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 7
6
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance of the Ignition Coil Control circuit from the Ignition Coil
connector to the PCM connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 7
No
→ Repair the open in the Ignition Coil Control circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
7
NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
107
DRIVEABILITY - GAS
P0351-IGNITION COIL #1 PRIMARY CIRCUIT —
Continued