Chrysler Voyager. Manual — part 68
TEST
ACTION
APPLICABILITY
1
NOTE: Diagnose any TP Sensor or MAP Sensor component DTCs before
continuing.
NOTE: The throttle plate and linkage must be free from binding and carbon
build up.
NOTE: Ensure the throttle plate is at the idle position.
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
No
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
2
Start the engine.
With the DRBIII
t, monitor the MAP Sensor voltage.
Snap the throttle.
Does the MAP Sensor voltage vary from below 2.0 volts at idle to above 3.5 volts at
WOT?
All
Yes
→ Go To 3
No
→ Go To 11
3
Ignition on, engine not running.
With the DRBIII
t, monitor the TP Sensor voltage while slowly depressing the
throttle pedal from the idle position to the wide open throttle position.
Does the voltage start approximately at 0.8 volts and go above 3.5 volts with a smooth
transition?
All
Yes
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No
→ Go To 4
4
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 (K6) 5 Volt Supply 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 5
No
→ Repair the TP Sensor (K6) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
271
DRIVEABILITY - NGC
P0121-THROTTLE POSITION SENSOR #1 PERFORMANCE —
Continued
TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K6) 5 Volt Supply circuit at the TP
Sensor harness connector.
Is the resistance above 100k ohms?
All
Yes
→ Go To 6
No
→ Repair the (K6) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
6
Turn the ignition off.
Disconnect the TP Sensor harness connector.
With the DRBIII
t, monitor the TP Sensor voltage.
Ignition on, engine not running.
Connect a jumper wire between the (K22) TP Signal circuit and the (K4) Sensor
ground circuit .
Does the TP Sensor voltage change from approximately 4.9 volts to below 0.5 of a
volt?
All
Yes
→ Replace the Throttle Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No
→ Go To 7
7
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 (K22) TP Signal 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 8
No
→ Repair the (K22) TP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
8
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 9
No
→ Repair the (K22) TP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
272
DRIVEABILITY - NGC
P0121-THROTTLE POSITION SENSOR #1 PERFORMANCE —
Continued
TEST
ACTION
APPLICABILITY
9
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 10
No
→ Repair the (K4) Sensor Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
10
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.
11
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 12
No
→ Repair the MAP (K6) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
12
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 13
No
→ Repair the short to ground in the (K6) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
273
DRIVEABILITY - NGC
P0121-THROTTLE POSITION SENSOR #1 PERFORMANCE —
Continued
TEST
ACTION
APPLICABILITY
13
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 14
14
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 15
No
→ Repair the (K1) MAP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
15
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 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.
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 17
No
→ Repair the (K4) Sensor Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
274
DRIVEABILITY - NGC
P0121-THROTTLE POSITION SENSOR #1 PERFORMANCE —
Continued
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