Dodge ZB 2005 Service Manual page 1228

P0351-IGNITION COIL #1 PRIMARY CIRCUIT —
TEST
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?
Yes → Go To 4
→ Replace the Ignition coil.
No
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?
Brightly blinking.
ON constantly.
OFF constantly.
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?
Yes → Repair the short to ground in the Ignition Coil Control circuit.
→ Go To 7
No
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?
Yes → Go To 7
→ Repair the open in the Ignition Coil Control circuit.
No
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.
Repair
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace the Ignition Coil.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Go To 5
Go To 6
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - GAS
Continued
107
APPLICABILITY
All
All
All
All
All