Page 618 of 5267

3.VISUAL DAMAGE
Visually inspect the sensor, engine belt, sensor connector, and the ECM connector.
Is there any damage?
Ye s>>
Repair or replace the sensor, engine belt, harness, or the ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Go To 4
4.CKP SENSOR
Disconnect the CKP sensor harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance between the (K853) 5-volt supply circuit and the (K24) signal circuit of the sensor.
Is the resistance between 900 and 1100 ohms?
Ye s>>
Go To 5
No>>
Replace the CKP sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
5.(K24) SIGNAL CIRCUIT OPEN
Disconnect the ECM harness connectors.
Disconnect the CKP sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the (K24) signal circuit between the ECM
harness connector and the CKP sensor harness connector.
Is the resistance less than 10 ohms?
Ye s>>
Go To 6
No>>
Repair the open (K24) signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
Page 623 of 5267

When Monitored:
With the key on.
Set Condition:
The voltage detected at the Crankshaft position sensor is below a calibrated value.
Possible Causes
CKP SENSOR
(K24) SIGNAL CIRCUIT OPEN
(K853) 5-VOLT SUPPLY CIRCUIT OPEN
(K975) RETURN CIRCUIT OPEN
(K24) SIGNAL CIRCUIT SHORTED TO (K975) RETURN CIRCUIT
(K853) 5-VOLT SUPPLY CIRCUIT SHORTED TO (K975) RETURN CIRCUIT
(K24) SIGNAL CIRCUIT SHORTED TO(K853) 5-VOLT SUPPLY CIRCUIT
(K24) SIGNAL CIRCUIT SHORTED TO GROUND
(K853) 5-VOLT SUPPLY CIRCUIT SHORTED TO BATTERY NEGATIVE
INTERMITTENT CONDITION
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.CKP SENSOR
Disconnect the CKP sensor harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance between the (K853) 5-volt supply circuit and the (K24) signal circuit of the sensor.
Is the resistance between 900 and 1100 ohms?
Ye s>>
Go To 2
No>>
Replace the CKP sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
Page 624 of 5267
2.(K24) SIGNAL CIRCUIT OPEN
Disconnect the ECM harness connectors.
Disconnect the CKP sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the (K24) signal circuit between the ECM
harness connector and the CKP sensor harness connector.
Is the resistance less than 10 ohms?
Ye s>>
Go To 3
No>>
Repair the open (K24) signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
3.(K853) 5-VOLT SUPPLY CIRCUIT OPEN
Measure the resistance of the (K853) 5-volt supply circuit between the
ECM harness connector and the CKP sensor harness connector.
Is the resistance less than 10 ohms?
Ye s>>
Go To 4
No>>
Repair the open (K853) 5-volt supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
Page 629 of 5267

When Monitored:
With the key on.
Set Condition:
Voltage detected at the CKP is below acalibrated value for a calibrated amountoftime.
Possible Causes
CKP SENSOR
(K853) 5-VOLT SUPPLY CIRCUIT SHORTED TO (K975) RETURN CIRCUIT
(K853) 5-VOLT SUPPLY CIRCUIT SHORTED BATTERY NEGATIVE
INTERMITTENT CONDITION
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.CKP SENSOR
Disconnect the CKP sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance between the (K853) 5-volt supply circuit and the (K24) signal circuit of the sensor.
Is the resistance between 900 and 1100 ohms?
Ye s>>
Go To 2
No>>
Replace the CKP sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
2.(K853) 5-VOLT SUPPLY CIRCUIT SHORTED TO (K975) RETURN CIRCUIT
Disconnect the ECM harness connectors.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance between the (K853) 5-volt supply circuit and the
(K975) return circuit in the sensor connector.
Is the resistance greater than 100k Ohms?
Ye s>>
Go To 3
No>>
Repair the short circuit or replace the engine harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
Page 632 of 5267

When Monitored:
With the key on.
Set Condition:
Voltage detected at the CKP is above a calibrated value for a calibrated amount of time.
Possible Causes
(K853) 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
INTERMITTENT CONDITION
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.(K853) 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
Turn the ignition off.
Disconnect the ECM harness connector(s).
Disconnect the CKP sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure voltage between the (K853) 5-volt supply circuit in the sensor
harness connector and battery negative.
Is the voltage greater than 1 volt?
Ye s>>
Repair or replace the shorted wiring harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
No>>
Go To 2
2.ECM
Reconnect the ECM harness connectors.
Ignition on, engine not running.
Connect a jumper wire between the sensor (K853) 5-volt supply circuit
and the sensor (K975) return in the sensor harness connector.
Did DTC P0337 set?
Ye s>>
Refer to the INTERMITTENT CONDITION Symptom (Diag-
nostic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
No>>
Replace the ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
Page 635 of 5267

3.CAMSHAFT SENSOR
Turn the ignition off.
Disconnect the cam sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance between the (F855) 5-volt supply circuit and the (K44) signal circuit of the sensor.
Is the resistance between 900 and 1100 ohms?
Ye s>>
Go To 4
No>>
Replace the camshaft sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
4.(F855) 5-VOLT SUPPLY CIRCUIT OPEN
Disconnect the ECM harness connectors.
Check connectors - Clean/repair as necessary.
Measure the resistance of the (F855) 5-volt supply circuit between the
ECM harness connector and the cam sensor harness connector.
Is the resistance less than 10 ohms?
Ye s>>
Go To 5
No>>
Repair the open (F855) 5-volt supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
Page 641 of 5267
3.CAMSHAFT SENSOR
Turn the ignition off.
Disconnect the cam sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance between the (F855) 5-volt supply circuit and the (K44) signal circuit of the sensor.
Is the resistance between 900 and 1100 ohms?
Ye s>>
Go To 4
No>>
Replace the camshaft sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
4.(K44) SIGNAL CIRCUIT OPEN
Disconnect the ECM harness connectors.
Measure the resistance of the (K44) signal circuit between the ECM
harness connector and the sensor harness connector.
Is the resistance less than 10 ohms?
Ye s>>
Go To 5
No>>
Repair the open (K44) signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
Page 646 of 5267
3.FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
Turn the ignition off.
Remove the cluster.
NOTE: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Using a 12-Volt test Light, check the Fused Ignition Switch Run/Start
circuit.
Is the light illuminated and bright?
Ye s>>
Go To 4
No>>
Repair the open fused Ignition Switch Output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
4.WAIT-TO-START LIGHT BULB
Remove and inspect the Wait-to-Start Bulb.
Is the Bulb Ok?
Ye s>>
Te s t c o m p l e t e .
No>>
Replace the Wait-to-Start Bulb.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)