Chrysler RG Voyager. Manual - part 392

TEST

ACTION

APPLICABILITY

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.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running and at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Remove the CMP Sensor and the CKP Sensor, checking for loose mounting screws
and debris on the sensor magnets that can corrupt the sensor signal.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?

All

Yes

→ Repair as necessary.

Perform ROAD TEST VERIFICATION - VER-2.

→ Test Complete.

DRIVEABILITY - DIESEL

P0340-CMP/CKP POSITION SENSOR CIRCUIT - CMP DYNAMIC PLAU-
SIBILITY —

Continued

Symptom:

P0340-CMP/CKP POSITION SENSOR CIRCUIT - CMP/CKP SYNC
FAILURE

When Monitored and Set Condition:

P0340-CMP/CKP POSITION SENSOR CIRCUIT - CMP/CKP SYNC FAILURE

When Monitored:

With the engine running.

Set Condition:

The ECM determines that the camshaft position sensor signal frequency

is not plausible with the crankshaft position sensor signal frequency.

POSSIBLE CAUSES

CAMSHAFT POSITION SENSOR SIGNAL PROBLEM

CRANKSHAFT POSITION SENSOR SIGNAL PROBLEM

DAMAGED CKP SENSOR

DAMAGED CMP SENSOR OR CAMSHAFT

ENGINE CONTROL MODULE

GEAR ALIGNMENT PROBLEM

INTERMITTENT CONDITION

TEST

ACTION

APPLICABILITY

NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
Turn the ignition on.
With the DRBIII

t, erase the ECM DTCs.

Attempt to start the engine.
With the DRBIII

t, read the ECM DTCs.

Does the DRB III display this DTC?

All

Yes

→ Go To 3

→ Go To 2

Turn the ignition on.
With the DRBIII

t, erase the ECM DTCs.

Test drive the vehicle.
With the DRBIII

t, read the ECM DTCs.

Does the DRB III display this DTC?

All

Yes

→ Go To 3

→ Go To 8

DRIVEABILITY - DIESEL

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Remove the CMP Sensor.
Inspect the CMP Sensor for conditions such as loose mounting screws, damage or
debris, also check the camshaft for cracked teeth.
Is there any evidence of these conditions?

All

Yes

→ Repair as necessary.

Perform ROAD TEST VERIFICATION - VER-2.

→ Go To 4

Turn the ignition off.
Remove the CKP Sensor.
Inspect the CKP Sensor for conditions such as loose mounting screws, damage or
debris.
Is there any evidence of these conditions?

All

Yes

→ Repair as necessary.

Perform ROAD TEST VERIFICATION - VER-2.

→ Go To 5

Turn the ignition off.
Using the DRB lab scope, backprobe the CMP Sensor Signal circuit at the CMP
Sensor harness connector.
Start the engine, if the engine will not start, crank the engine for several seconds
while monitoring the DRB.
NOTE: Refer to Charts and Graphs to view a correct CMP Sensor signal.
Does the DRB display a steady clean CMP Signal pattern?

All

Yes

→ Go To 6

→ Perform Test for DTC P0340-Camshaft Position Sensor Circuit

Static Plausibility.
Perform ROAD TEST VERIFICATION - VER-2.

Turn the ignition off.
Using the DRB lab scope, backprobe both of the CKP Sensor Signal circuits at the
CKP Sensor harness connector.
NOTE: Refer to Charts and Graphs to view a correct CKP Sensor signal.
Start the engine, if the engine will not start, crank the engine for several seconds
while monitoring the DRB.
Does the DRB display a steady clean CKP Signal pattern for each circuit?

All

Yes

→ Go To 7

→ Perform Test for DTC P0340-Crankshaft Position Sensor Circuit

Dynamic Plausibility.
Perform ROAD TEST VERIFICATION - VER-2.

Refer to the Service Information and check alignment of the camshaft sprocket,
crankshaft sprocket and injection pump sprocket.
Are all of the sprockets aligned correctly?

All

Yes

→ Replace and program the Engine Control Module in accordance

with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.

→ Repair or adjust as necessary.

Perform ROAD TEST VERIFICATION - VER-2.

DRIVEABILITY - DIESEL

P0340-CMP/CKP POSITION SENSOR CIRCUIT - CMP/CKP SYNC FAIL-
URE —

Continued

TEST

ACTION

APPLICABILITY

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.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?

All

Yes

→ Repair as necessary.

Perform ROAD TEST VERIFICATION - VER-2.

→ Test Complete.

DRIVEABILITY - DIESEL

P0340-CMP/CKP POSITION SENSOR CIRCUIT - CMP/CKP SYNC FAIL-
URE —

Continued

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