Chrysler Sebring, Stratus sedan, Sebring Convertible. Manual — part 230
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the MAF Sensor harness connector.
Disconnect the PCM harness connector.
Ignition on, engine not running.
Measure the voltage of the MAF Signal circuit in the MAP Sensor harness connector.
Is the voltage above 5.0 volts?
All
Yes
→ Repair the short to battery voltage in the MAF Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the MAF Sensor harness connector.
Connect a jumper wire between the MAF Sensor Signal circuit and the Sensor
ground circuit.
With the DRBIII
t, monitor the MAF Sensor voltage.
Ignition on, engine not running.
Is the voltage below .05 volt?
All
Yes
→ Replace the MAF Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the MAF 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 MAF Signal circuit from the MAF Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the open in the MAF Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
6
Turn the ignition off.
Disconnect the MAF 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 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 7
No
→ Repair the open in the Sensor ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
297
DRIVEABILITY - NGC
P2432-MAF SENSOR HIGH —
Continued
TEST
ACTION
APPLICABILITY
7
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.
298
DRIVEABILITY - NGC
P2432-MAF SENSOR HIGH —
Continued
Symptom:
P2433-MAF SENSOR LOW
When Monitored and Set Condition:
P2433-MAF SENSOR LOW
When Monitored:
Engine speed between 600 to 3500 RPM. TPS voltage less than 1.2
volts. Battery voltage greater than 10 volts.
Set Condition:
The MAF sensor signal voltage is less than .07829 of a volt. One trip Fault.
POSSIBLE CAUSES
MAP SENSOR VOLTAGE BELOW .07829 VOLTS
ASD RELAY OUTPUT CIRCUIT
MAF SENSOR INTERNAL FAILURE
MAF SIGNAL CIRCUIT SHORTED TO GROUND
MAF SIGNAL CIRCUIT SHORTED TO (K4) SENSOR GROUND CIRCUIT
PCM
TEST
ACTION
APPLICABILITY
1
NOTE: Before continuing the following test, always check the Air Pump
Assembly in-line connectors. Ensure that there is no terminal damage,
corrosion or backed out terminals. Verify that there is good wire to terminal
connection in the connector.
Start the engine.
With the DRBIII
t, read the MAF Sensor voltage.
Is the voltage below .07829 of a volt?
All
Yes
→ Go To 2
No
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
2
Turn the ignition off.
Disconnect the MAF Sensor harness connector.
Ignition on, engine not running.
Using the DRBIII
t, actuate the ASD Relay.
With a 12-volt test light connected to ground, probe the ASD Relay Output circuit in
the MAF harness connector.
Does the test light illuminate brightly?
All
Yes
→ Go To 3
No
→ Repair the ASD Relay Output circuit
Perform POWERTRAIN VERIFICATION TEST VER - 5.
299
DRIVEABILITY - NGC
TEST
ACTION
APPLICABILITY
3
With the MAF Sensor still disconnected.
Ignition on, engine not running.
With the DRBIII
t, monitor the MAF Sensor voltage.
Does the voltage read between 4.5 to 4.9 volts?
All
Yes
→ Replace the MAF Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the MAF Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the MAF Signal circuit at the MAF
Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the MAF Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the MAF Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the MAF Signal circuit and the Sensor ground
circuit in the MAF Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the Sensor ground shorted to the MAF Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 6
6
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.
300
DRIVEABILITY - NGC
P2433-MAF SENSOR LOW —
Continued
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