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Chrysler RG Voyager. Manual - part 578

Symptom:

P0501-VEHICLE

SPEED

SENSOR

PERFORMANCE

(AUTO

TRANS)

When Monitored and Set Condition:

P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (AUTO TRANS)

When Monitored:

Engine running. Transmission not in park or neutral. Brakes not

applied. Engine run time greater than 10 seconds.

Set Condition:

The PCM does not see vehicle speed signal from the transmission control

side of the PCM. Two Trip Fault.

POSSIBLE CAUSES

GOOD TRIP EQUAL TO ZERO

TRANSMISSION DTC(S)

PCM

TEST

ACTION

APPLICABILITY

NOTE: Ensure that the Pinion Factor has been programmed and the correct
tire size has been programmed in before continuing.
Ignition on, engine not running.
With the DRBIII

t, read PCM DTCs and record the related Freeze Frame data.

Is the Good Trip displayed and equal to zero?

All

Yes

→ Go To 2

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

Turn the ignition on.
With the DRBIII

t, check the Transmission DTCs.

Are there any Transmission DTCs present?

All

Yes

→ Refer to the appropriate Transmission DTC in the Transmission

category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

→ NOTE: Before continuing, check the PCM harness connector

terminals for corrosion, damage, or terminal push out. Repair as
necessary. Replace and program the Powertrain Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

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DRIVEABILITY - NGC

Symptom:

P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (MANUAL
TRANS)

When Monitored and Set Condition:

P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (MANUAL TRANS)

When Monitored:

With the engine running. Clutch not depressed. Engine rpm greater

than 1500.

Set Condition:

The PCM does not receive a vehicle speed sensor signal for more than 11

seconds. 2 consecutive trips.

POSSIBLE CAUSES

VEHICLE SPEED SENSOR OPERATION

(K7) 5 VOLT SUPPLY CIRCUIT OPEN

(G7) VSS SIGNAL CIRCUIT SHORTED TO GROUND

(G7) VSS SIGNAL CIRCUIT OPEN

PCM VSS SIGNAL

(K4) SENSOR GROUND CIRCUIT OPEN

VEHICLE SPEED SENSOR

TEST

ACTION

APPLICABILITY

Raise the drive wheels off the ground.
WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING
WHEELS.
Start the engine.
With the DRBIII

t, monitor the Vehicle Speed Sensor

Place the transmission in any forward gear.
Allow the wheels to rotate.
Does the DRBIII

t display vehicle speed above 0 MPH/KMH?

All

Yes

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

→ Go To 2

Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (K7) 5 Volt Supply circuit in the VSS harness connector.
Is the voltage above 4.6 volts?

All

Yes

→ Go To 3

→ Repair the (K7) 5 Volt Supply circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

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DRIVEABILITY - NGC

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (G7) VSS Signal circuit in the VSS harness connector.
Is the voltage between 4.5 to 5.0 volts?

All

Yes

→ Go To 4

→ Go To 5

Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Measure the resistance of the (K4) Sensor ground circuit between the VSS harness
connector and ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Remove and inspect the Pinion Gear. If OK, replace the Vehicle

Speed Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

→ Repair the (K4) Sensor ground circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the (G7) Vehicle Speed Sensor Signal circuit in the VSS
harness connector to ground.
Is the resistance below 100 ohms?

All

Yes

→ Repair the (G7) VSS Signal circuit for a short to ground.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

→ Go To 6

Turn the ignition off.
Disconnect the Vehicle Speed 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 (G7) VSS Signal circuit between the VSS harness
connector and to the appropriate terminal of special tool #8815.
Is the resistance below 5 ohms?

All

Yes

→ Go To 7

→ Repair the (G7) VSS Signal circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

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, view repair,

All

Repair

Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

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DRIVEABILITY - NGC

P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (MANUAL TRANS)
—

Continued

Symptom List:

P0506-IDLE SPEED LOW PERFORMANCE
P0507-IDLE SPEED HIGH PERFORMANCE

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be P0506-IDLE SPEED LOW PER-
FORMANCE.

When Monitored and Set Condition:

P0506-IDLE SPEED LOW PERFORMANCE

When Monitored:

Engine Running. During an idle condition.

Set Condition:

If the engine RPM does not come within a calibratable low limit of the

target idle speed, a failure timer will increment. When the appropriate failure timer
reaches its maximum threshold without sign of RPM trending towards control, a soft fail
is generated. When a calibratable number of the soft fails is reached, a 1 trip fault is set.
When two 1 trip faults occur in a row, the DTC is set and the MIL illuminates.

P0507-IDLE SPEED HIGH PERFORMANCE

When Monitored:

Engine Running. During an idle condition.

Set Condition:

If the engine RPM does not come within a calibratable high limit of the

POSSIBLE CAUSES

GOOD TRIP EQUAL TO ZERO

PCV SYSTEM

IAC MOTOR PASSAGES

VACUUM LEAKS

AIR INDUCTION SYSTEM

THROTTLE BODY AND THROTTLE LINKAGE

TEST

ACTION

APPLICABILITY

Ignition on, engine not running.
With the DRBIII

t, read DTCs and record the related Freeze Frame data.

Is the Good Trip Counter displayed and equal to zero?

All

Yes

→ Go To 2

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

197

DRIVEABILITY - NGC

Content .. 576 577 578 579 ..