Chrysler Town, Dodge Caravan. Manual — part 573
TEST
ACTION
APPLICABILITY
9
NOTE: Inspect the slots on the flywheel for damage. If a problem is found
repair as necessary.
If there are no possible causes remaining, view repair.
All
Repair
Replace the Crankshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
10
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the (K24) CKP Sensor Signal circuit from the CKP Sensor
harness connector to the PCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 11
No
→ Repair the open in the (K24) CKP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
11
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (K24) CKP Sensor Signal circuit at
the CKP Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the (K24) CKP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 12
12
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K24) CKP Sensor Signal circuit at the CKP Sensor
harness connector.
Is the voltage above 5.3 volts?
All
Yes
→ Repair the short to voltage in the (K24) CKP Sensor Signal
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 13
13
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance between the (K24) CKP Sensor Signal circuit and the (F888)
8-volt Supply circuit at the CKP Sensor harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the short between the (F888) 8-volt Supply circuit and the
(K24) CKP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 17
100
DRIVEABILITY - SBEC
P0320-NO CRANK REFERENCE SIGNAL AT PCM —
Continued
TEST
ACTION
APPLICABILITY
14
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the (F888) 8-volt Supply circuit from the CKP Sensor
harness connector to the PCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 15
No
→ Repair the open in the (F888) 8-volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
15
Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect the CKP Sensor harness connector.
Measure the resistance between ground and the (F888) 8-volt Supply circuit at the
CKP Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the (F888) 8-volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 16
16
Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (F888) 8-volt Supply circuit at the CKP Sensor harness
connector.
Is the voltage above 5.3 volts?
All
Yes
→ Repair the short to voltage in the (F888) 8-volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 17
17
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.
101
DRIVEABILITY - SBEC
P0320-NO CRANK REFERENCE SIGNAL AT PCM —
Continued
Symptom:
P0340-NO CAM SIGNAL AT PCM
When Monitored and Set Condition:
P0340-NO CAM SIGNAL AT PCM
When Monitored:
Engine cranking/running. Battery voltage greater than 10.4 volts.
Set Condition:
At least 5 seconds or 2.5 engine revolutions have elapsed with crankshaft
position sensor signals present but no camshaft position sensor signal.
POSSIBLE CAUSES
INTERMITTENT CRANKSHAFT POSITION SENSOR SIGNAL
INTERMITTENT CAMSHAFT POSITION SENSOR SIGNAL
INTERMITTENT CONDITION
(F888) 8-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(F888) 8-VOLT SUPPLY CIRCUIT OPEN
(F888) 8-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
(K44) CMP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
(K44) CMP SENSOR SIGNAL CIRCUIT OPEN
(K44) CMP SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K44) CMP SENSOR SIGNAL SHORTED TO (F888) 8-VOLT SUPPLY CIRCUIT
(K900) SENSOR GROUND CIRCUIT OPEN
PCM
CAMSHAFT POSITION SENSOR
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, read the Current Camshaft Position (CMP) Sensor State while
cranking the engine.
Does the DRBIII
t display Current CMP State Present while cranking the engine.
All
Yes
→ Go To 2
No
→ Go To 4
102
DRIVEABILITY - SBEC
TEST
ACTION
APPLICABILITY
2
Turn the ignition off.
With the DRBIII
t lab scope probe and the Miller special tool #6801, back probe the
Crankshaft Position (CKP) Sensor signal circuit in the PCM harness connector.
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.
Turn the ignition on. (do not start or crank the engine)
Observe the lab scope screen.
Look for any pulses generated by the Crankshaft Position (CKP) Sensor.
Did the CKP Sensor generate any pulses?
All
Yes
→ Replace the Crankshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 3
3
Turn the ignition off.
With the DRBIII
t lab scope probe and the Miller special tool #6801, backprobe the
CMP Signal circuit in the PCM harness connector.
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.
Turn the ignition on. (do not start or crank the engine)
Observe the lab scope screen.
Look for any pulses generated by the CMP Sensor.
Did the CMP Sensor generate any pulses?
All
Yes
→ Replace the Camshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
4
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (F888) 8-volt Supply circuit in the CMP Sensor harness
connector.
Is the voltage between 7.5 and 9.1 volts?
All
Yes
→ Go To 5
No
→ Go To 12
5
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (K44) CMP Sensor Signal circuit in the CMP Sensor
harness connector.
Is the voltage between 4.5 and 5.0 volts?
All
Yes
→ Go To 6
No
→ Go To 8
103
DRIVEABILITY - SBEC
P0340-NO CAM SIGNAL AT PCM —
Continued
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