Chrysler Voyager. Manual — part 59

TEST

ACTION

APPLICABILITY

9

Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K22) TP Signal circuit in the TP
Sensor harness connector.
Is the resistance above 100k ohms?

All

Yes

→ Go To 10

No

→ Repair the (K22) TP Sensor Signal circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

10

Turn the ignition off.
Disconnect the TP 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 TP Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 11

No

→ Repair the (K4) Sensor Ground circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

11

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 - NGC.

12

Turn the ignition off.
Disconnect the MAP 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 (K6) 5 Volt Supply circuit from the MAP Sensor
harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 13

No

→ Repair the MAP (K6) 5 Volt Supply circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

235

DRIVEABILITY - NGC

P0068-MANIFOLD PRESSURE/THROTTLE POSITION CORRELATION -
HIGH FLOW/VACUUM LEAK —

Continued

TEST

ACTION

APPLICABILITY

13

Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K6) 5 Volt Supply circuit at the
MAP Sensor harness connector.
Is the resistance above 100k ohms?

All

Yes

→ Go To 14

No

→ Repair the short to ground in the (K6) 5 Volt Supply circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

14

Turn the ignition off.
Disconnect the MAP Sensor harness connector.
With the DRBIII

t, monitor the MAP Sensor voltage.

Ignition on, engine not running.
Connect a jumper wire between the (K1) MAP Sensor Signal circuit and the (K4)
Sensor ground circuit .
Cycle the ignition switch from off to on.
With the DRBIII

t, monitor the MAP Sensor voltage.

Does the DRBIII

t display MAP voltage from approximately 4.9 volts to below 0.5

volt?

All

Yes

→ Replace the MAP Sensor.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

No

→ Go To 15

15

Turn the ignition off.
Disconnect the MAP 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 (K1) MAP Signal circuit from the MAP Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 16

No

→ Repair the (K1) MAP Signal circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

16

Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K1) MAP Signal circuit at the MAP
Sensor harness connector.
Is the resistance above 100k ohms?

All

Yes

→ Go To 17

No

→ Repair the (K1) MAP Signal circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

236

DRIVEABILITY - NGC

P0068-MANIFOLD PRESSURE/THROTTLE POSITION CORRELATION -
HIGH FLOW/VACUUM LEAK —

Continued

TEST

ACTION

APPLICABILITY

17

Turn the ignition off.
Disconnect the MAP 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 MAP Sensor
harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 18

No

→ Repair the (K4) Sensor Ground circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.

18

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 - NGC.

237

DRIVEABILITY - NGC

P0068-MANIFOLD PRESSURE/THROTTLE POSITION CORRELATION -
HIGH FLOW/VACUUM LEAK —

Continued

Symptom List:

P0070-AMBIENT TEMP SENSOR STUCK
P0071-AMBIENT TEMP SENSOR PERFORMANCE

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be P0070-AMBIENT TEMP SENSOR
STUCK.

When Monitored and Set Condition:

P0070-AMBIENT TEMP SENSOR STUCK

When Monitored:

Engine Running.

Set Condition:

After 4 warm-up cycles, the PCM did not see a 2°C (35°F) change in the

Ambient Temperature Sensor voltage within 200 miles . Two Trip Fault

P0071-AMBIENT TEMP SENSOR PERFORMANCE

When Monitored:

Engine off time is greater than 480 minutes. Ambient temperature is

greater than 4°C (39°F).

Set Condition:

After a calibrated amount of cool down time, the PCM compares the ECT

Sensor, IAT Sensor and the Ambient Air Temperature Sensor values. If the Ambient Air
Temperature Sensor value is not within 10°C (53°F) of the other two temperartue sensors
an error is detected. Two Trip Fault.

POSSIBLE CAUSES

GOOD TRIP EQUAL TO ZERO

(K25) AAT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE

AMBIENT AIR TEMPERATURE SENSOR VOLTAGE BELOW 1.0 VOLT

(K25) AAT SIGNAL CIRCUIT OPEN

(K4) SENSOR GROUND CIRCUIT OPEN

(K25) AAT SIGNAL CIRCUIT SHORTED TO GROUND

(K25) AAT SIGNAL CIRCUIT SHORTED TO (K4) SENSOR GROUND

PCM LOW

PCM HIGH

238

DRIVEABILITY - NGC