Dodge Ram Truck 1500-2500-3500. Manual — part 48
C141E–REAR DIFFERENTIAL CONTROL CIRCUIT HIGH (CONTINUED)
5.
FDCM
NOTE: Before continuing, check the FDCM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and
Ground circuits.
Were there any problems found?
Yes
>> Repair as necessary.
Perform FDCM VERIFICATION TEST
No
>> Replace and program the Final Drive Control Module in accordance with Service Information.
Perform FDCM VERIFICATION TEST.
6.
INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
Using the DRBIII
T
, monitor the data related to this circuit while performing the wiggle test. Look for the data to
change or for the DTC to reset.
Were there any problems found?
Yes
>> Repair as necessary.
Perform FDCM VERIFICATION TEST.
No
>> Test Complete.
3 - 24
DIFFERENTIAL & DRIVELINE - ELECTRICAL DIAGNOSTICS
DR/DH
C141F–REAR DIFFERENTIAL CONTROL CIRCUIT OPEN
DR/DH
DIFFERENTIAL & DRIVELINE - ELECTRICAL DIAGNOSTICS
3 - 25
C141F–REAR DIFFERENTIAL CONTROL CIRCUIT OPEN (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Ignition on. Axle Locker Switch in the FR/RR position.
•
Set Condition:
The FDCM detects the Rear Locker Source circuit is open.
Possible Causes
REAR LOCKER SOLENOID
(T526) REAR LOCKER SOURCE CIRCUIT OPEN
FDCM
Diagnostic Test
1.
ACTIVE DTC
CAUTION: Before removing the FDCM harness connector, clean the connector and locking cam area of dirt
and debris. Failure to do so can result in the connector being jammed or damage to the locking cams on
the harness connector or module. Do not force the assist arm when releasing or installing the harness con-
nector.
Ignition on, engine not running.
With the DRBIII
T
, read DTCs.
Is the DTC active at this time?
Yes
>> Go To 2
No
>> Go To 5
2.
REAR LOCKER SOLENOID OPERATION
NOTE: Before continuing with the below diagnostic test, ensure the FDCM harness connector seal is
installed correctly. Inspect the terminals on both harness connector and the module for damage. Failure to
do so can result in misdiagnoses of the system.
Turn the ignition off.
Disconnect the Rear Locker Solenoid harness connector.
Ignition on, engine not running.
Using a 12-volt test light, jump across from the (T526) Rear Locker Source circuit and the (T528) Rear Locker
Return circuit in the Rear Locker harness connector.
With a DRBIII
T
, actuate the Rear Locker Solenoid.
Does the test light flash on and off?
Yes
>> Inspect the Rear Locker Solenoid terminals and connectors for corrosion and/or dirty that may compro-
mise the connection. If OK, replace the Rear Locker Solenoid.
Perform FDCM VERIFICATION TEST.
No
>> Go To 3
3 - 26
DIFFERENTIAL & DRIVELINE - ELECTRICAL DIAGNOSTICS
DR/DH
C141F–REAR DIFFERENTIAL CONTROL CIRCUIT OPEN (CONTINUED)
3.
(T526) REAR LOCKER SOURCE CIRCUIT OPEN
Turn the ignition off.
Disconnect the FDCM harness connector.
Turn the ignition on.
Measure the resistance of the (T526) Rear Locker Source circuit from
the FDCM harness connector and the Rear Locker Solenoid harness
connector.
Is the resistances below 5.0 ohms?
Yes
>> Go To 4
No
>> Repair the open in the Rear Locker Source circuit.
Perform FDCM VERIFICATION TEST.
4.
FDCM
NOTE: Before continuing, check the FDCM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and
Ground circuits.
Were there any problems found?
Yes
>> Repair as necessary.
Perform FDCM VERIFICATION TEST
No
>> Replace and program the Final Drive Control Module in accordance with Service Information.
Perform FDCM VERIFICATION TEST.
5.
INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
Using the DRBIII
T
, monitor the data related to this circuit while performing the wiggle test. Look for the data to
change or for the DTC to reset.
Were there any problems found?
Yes
>> Repair as necessary.
Perform FDCM VERIFICATION TEST.
No
>> Test Complete.
DR/DH
DIFFERENTIAL & DRIVELINE - ELECTRICAL DIAGNOSTICS
3 - 27
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст