Originally Posted by Moparrbust
MAFs don't exist on Diamler Chrysler vehicles....................speed density systems are used.
WOW.....really?
Then please explain to me what cavity 11 of the PCM connector is for. Or possibly what they put all of this in the service manual for?
9 - 8 ENGINE - ELECTRICAL DIAGNOSTICS
ZH
(P0101) MAF SENSOR PERFORMANCE
When Monitored and Set Condition
²
When Monitored: With the engine running and no fault in the throttle valve actuator.
²
Set Condition: The Mass Air Flow (MAF) Sensor value is less than 16 kg/h when the throttle valve angle
is greater than 14° for approximately 5 seconds, or the MAF Sensor reading is greater than a calculated
value that is determined by engine speed and throttle valve angle for approximately 5 seconds.
POSSIBLE CAUSES
FUSED ENGINE CONTROL RELAY OUTPUT CIRCUIT OPEN
FUSED ENGINE CONTROL RELAY OUTPUT CIRCUIT SHORTED TO GROUND
SENSOR GROUND CIRCUIT OPEN
MASS AIR FLOW SENSOR SIGNAL CIRCUIT OPEN
MASS AIR FLOW SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
5-VOLT SUPPLY CIRCUIT OPEN
5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
MASS AIR FLOW SENSOR
POWERTRAIN CONTROL MODULE
Diagnostic Test
1.
CHECK FOR CURRENT DTC
Turn the ignition on.
With the DRB III
T, read the PCM DTCs.
Is this DTC present?
Yes
>> For complete diagnosis of this DTC, refer to (P0102) MASS
AIR FLOW CIRCUIT.
No
>> Go To 2
2.
INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Note: Check connectors — Clean/repair as necessary. Poor pin to terminal
connections can set DTCs.Using the wiring diagram/schematic
as a guide, inspect the wiring and connectors specific to this DTC.
Wiggle the wires while checking for shorts and open circuits.
Note: Check for any Technical Service Bulletins that may apply.
Were there any problems found?
Yes
>> Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No
>> The condition that caused this DTC to set is currently
not present. Inspect the related wiring harness for a
possible intermittent condition.
ZH
ENGINE - ELECTRICAL DIAGNOSTICS 9 - 9
(P0101) MAF SENSOR PERFORMANCE — CONTINUED
9 - 10 ENGINE - ELECTRICAL DIAGNOSTICS
ZH
(P0102) MASS AIR FLOW CIRCUIT