Dodge Dakota (R1). Manual — part 849
TEST
ACTION
APPLICABILITY
12
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the CMP Sensor Signal circuit in the CMP Sensor harness
connector.
Is the voltage above 5.0 volts?
All
Yes
→
Repair the CMP Sensor Signal circuit for a short to battery
voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
13
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Measure the resistance between the CMP Sensor Signal circuit and the 5 Volt Supply
circuit in the CMP Sensor harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the CMP Sensor Signal circuit shorted to the 5 Volt Supply
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
14
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
15
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Measure the resistance of the 5 Volt Supply circuit in the CMP Sensor harness
connector to ground.
Is the resistance below 100 ohms?
All
Yes
→
Repair the 5 Volt Supply circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
16
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the 5 Volt Supply circuit between the CMP Sensor harness
connector and the PCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the 5 Volt Supply circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
128
DRIVEABILITY - GAS
P0340-NO CAM SIGNAL AT PCM —
Continued
TEST
ACTION
APPLICABILITY
17
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit in the CMP Sensor harness
connector.
Is the voltage above 5.5 volts?
All
Yes
→
Repair the 5 Volt Supply circuit for a short to battery voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
18
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
129
DRIVEABILITY - GAS
P0340-NO CAM SIGNAL AT PCM —
Continued
Symptom:
P0351-IGNITION COIL # 1 PRIMARY CIRCUIT
When Monitored and Set Condition:
P0351-IGNITION COIL # 1 PRIMARY CIRCUIT
When Monitored:
With battery voltage greater than 8 volts during engine cranking or
greater than 12 volts with engine running, engine rpm less than 2016, and none of the coils
in dwell when checked.
Set Condition:
Peak current is not achieved with battery based dwell plus 1.5 msec of
diagnostic offset. It takes less than 3 seconds during cranking or up to 6 seconds while
running to set.
POSSIBLE CAUSES
COIL DRIVER NO. 1 CIRCUIT OPEN
WIRING HARNESS INTERMITTENT
COIL DRIVER NO. 1 CIRCUIT SHORTED TO GROUND
COIL ON PLUG NO. 1
POWERTRAIN CONTROL MODULE (COIL DRIVER NO. 1)
TEST
ACTION
APPLICABILITY
1
Turn ignition on.
With the DRBIII
t, read DTCs.
Is the Good Trip Counter displayed and equal to zero for P-0351?
4.7L V8
Yes
→
No
→
2
Turn the ignition off.
Disconnect the coil on plug no. 1 harness connector.
Disconnect the Powertrain Control Module connectors.
Measure the resistance of the coil driver no. 1 circuit from the coil on plug no. 1
connector to the PCM connector.
Is the resistance below 5.0 ohms?
4.7L V8
Yes
→
No
→
Repair the open coil driver no. 1 circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
3
Turn the ignition off.
Disconnect the coil on plug no. 1 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 ohms?
4.7L V8
Yes
→
No
→
Replace the coil on plug no. 1.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
130
DRIVEABILITY - GAS
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
NOTE: The following test is done at the coil on plug no. 1 harness connector
with the coil on plug harness connected.
Back probe the coil driver no. 1 circuit with Miller tool #6801 and a test light
connected to B+.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Start the engine and observe the test light.
Does the test light blink/flicker?
4.7L V8
Yes
→
Test Complete
No
→
Caution: Turn the Engine Off.
5
Turn the ignition off.
Disconnect the coil on plug no. 1 harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance between the coil driver no. 1 circuit and ground (B-).
Is the resistance below 5.0 ohms?
4.7L V8
Yes
→
Repair the coil driver no. 1 circuit shorted to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
6
If there are no possible causes remaining, replace the Powertrain Control Module.
View repair options.
4.7L V8
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
7
NOTE: The conditions required to set the DTC are not present.
NOTE: Use the Freeze Frame Data to help you duplicate the conditions that
set the DTC. Pay particular attention to the DTC set conditions, such as,
VSS, MAP, ECT, and Load.
NOTE: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
NOTE: Visually inspect the related wiring harness connectors. Look for
broken, bent, pushed out, or corroded terminals.
NOTE: Refer to any technical service bulletins that may apply.
Perform a wiggle test of the coil on plug wiring while the engine is running. Listen
for the engine to miss or stall. Also watch for the Good Trip Counter to change to 0.
Were any problems found?
4.7L V8
Yes
→
Repair wiring harness/connectors as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
Test Complete.
131
DRIVEABILITY - GAS
P0351-IGNITION COIL # 1 PRIMARY CIRCUIT —
Continued
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