Chrysler Town, Dodge Caravan. Manual — part 632
TEST
ACTION
APPLICABILITY
10
Turn the ignition off.
Disconnect the CKP Sensor connector.
Ignition on, engine not running.
Measure the voltage on the (K24) CKP Signal circuit.
Wiggle the related wire harness while taking this measurement.
Does the voltage ever increase above 5.5 volts?
All
Yes
→ Repair the short to B+ voltage in the (K24) CKP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No
→ Go To 11
11
Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the CKP Sensor harness connector.
Measure the resistance between the (K6) 5 Volt Supply circuit and the (K24) CKP
signal circuit at the CKP Sensor harness connector.
Wiggle the related wire harness while taking this measurement.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the short to the (K6) 5 Volt Supply circuit in the (K24) CKP
Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No
→ Go To 12
12
NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, review repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
336
DRIVEABILITY - NGC
P0339-CRANKSHAFT POSITION SENSOR INTERMITTENT —
Continued
Symptom:
P0340-CAMSHAFT POSITION SENSOR CIRCUIT
When Monitored and Set Condition:
P0340-CAMSHAFT POSITION SENSOR CIRCUIT
When Monitored:
Engine cranking/running. Battery voltage greater than 10 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. One Trip Fault.
POSSIBLE CAUSES
INTERMITTENT CRANKSHAFT POSITION SENSOR SIGNAL
INTERMITTENT CAMSHAFT POSITION SENSOR SIGNAL
(K6) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(K6) 5 VOLT SUPPLY CIRCUIT OPEN
(K6) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
(K44) CMP SIGNAL CIRCUIT SHORTED GROUND
(K44) CMP SIGNAL CIRCUIT OPEN
(K44) CMP SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K44) CMP SIGNAL SHORTED TO (K6) 5 VOLT SUPPLY CIRCUIT
(K4) SENSOR GROUND CIRCUIT OPEN
PCM - (K6) 5 VOLT SUPPLY
PCM - (K44) CMP SIGNAL
CAMSHAFT POSITION SENSOR
TEST
ACTION
APPLICABILITY
1
Start the engine.
With the DRBIII
t, read the CMP SYNC State.
Does the DRBIII
t display the CMP SYNC State IN SYNC?
All
Yes
→ Go To 2
No
→ Go To 4
337
DRIVEABILITY - NGC
TEST
ACTION
APPLICABILITY
2
Turn the ignition off.
With the DRBIII
t lab scope probe and the Miller special tool #6801, back probe the
(K24) CKP signal circuit in the CKP 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.
Ignition on, engine not running.
Wiggle the related wire harness and lightly tap the Crankshaft Position Sensor.
Observe the lab scope screen.
Start the engine.
Allow the engine to idle.
Observe the lab scope screen.
Did the CKP Sensor generate any erratic pulses?
All
Yes
→ Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No
→ Go To 3
3
Turn the ignition off.
With the DRBIII
t lab scope probe and the Miller special tool #6801, backprobe the
(K44) CMP Signal circuit in the CMP 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.
Ignition on, engine not running.
Wiggle the related wire harness and lightly tap on the Camshaft Position Sensor.
Observe the lab scope screen.
Start the engine.
Allow the engine to idle.
Observe the lab scope screen.
Did the CMP Sensor generate any erratic pulses?
All
Yes
→ Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No
→ Test Complete.
4
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K6) 5 Volt Supply circuit in the CMP Sensor harness
connector.
Is the voltage between 4.5 and 5.5 volts?
All
Yes
→ Go To 5
No
→ Go To 13
5
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K44) CMP 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
338
DRIVEABILITY - NGC
P0340-CAMSHAFT POSITION SENSOR CIRCUIT —
Continued
TEST
ACTION
APPLICABILITY
6
Turn the ignition off.
Disconnect the CMP Sensor 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.
Measure the resistance of the (K4) Sensor Ground circuit from the CMP Sensor
harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 7
No
→ Repair the open in the (K4) Sensor Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
7
NOTE: Inspect the Camshaft sprocket for damage per the Service Informa-
tion. If a problem is found repair as necessary.
If there are no possible causes remaining, view repair.
All
Repair
Replace the Camshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
8
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K44) CMP Signal circuit in the
CMP Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the (K44) CMP Signal circuit
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No
→ Go To 9
9
Turn the ignition off.
Disconnect the CMP Sensor 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.
Measure the resistance of the (K44) CMP Signal circuit from the CMP Sensor
harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 10
No
→ Repair the open in the (K44) CMP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
339
DRIVEABILITY - NGC
P0340-CAMSHAFT POSITION SENSOR CIRCUIT —
Continued
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