Dodge Ram Truck 1500-2500-3500. Manual — part 1849
U0100-LOST COMMUNICATION WITH ECM/PCM (FDCM) (CONTINUED)
4.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
With the scan tool, select Network Diagnostics.
Is there more than one module with active DTCs “Logged Against” the ECM/PCM?
Yes
>> Replace/update the ECM/PCM in accordance with the service information.
Perform the appropriate VERIFICATION TEST.
No
>> Replace/update the module that set this DTC in accordance with the service information.
Perform the appropriate VERIFICATION TEST.
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS (POWER WAGON)
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U0155-LOST COMMUNICATION WITH CLUSTER/CCN (FDCM)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
•
With the ignition on
•
Battery voltage between 10 and 16 volts
•
IOD fuse installed
•
FCM is configured correctly
•
Set Condition:
Bus messages not received from the Cluster/CCN for approximately 2 to 5 seconds.
Possible Causes
CAN B BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
CLUSTER/CCN POWER AND GROUND
CLUSTER/CCN
MODULE THAT SET THE DTC
Diagnostic Test
1.
VERIFY DTC IS ACTIVE
NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
With the scan tool, read active DTCs.
Is this DTC active?
Yes
>> Go To 2
No
>> Refer to the Stored Lost Communication test procedure. Refer to the table of contents in this section.
2.
CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
With the scan tool, read active DTCs from all modules.
NOTE: Check for FCM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or igni-
tion related DTCs.
Does the scan tool display any active DTCs to the conditions listed above?
Yes
>> Diagnose and repair the DTC. Refer to the Index for a complete list of the symptoms.
No
>> Go To 3
3.
VERIFY THAT THE CCN IS ACTIVE ON THE BUS
Turn the ignition on.
With the scan tool, select Network Diagnostics.
Verify that the CCN is active on the bus.
Is the CCN active on the bus?
Yes
>> Go To 4
No
>> Refer to the No Response test procedure. Refer to the table of contents in this section.
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS (POWER WAGON)
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U0155-LOST COMMUNICATION WITH CLUSTER/CCN (FDCM) (CONTINUED)
4.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
With the scan tool, select Network Diagnostics.
Is there more than one module with active DTCs “Logged Against” the CCN?
Yes
>> Replace/update the Cluster (CCN) in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1.
No
>> Replace/update the module that set this DTC in accordance with the service information.
Perform the appropriate VERIFICATION TEST.
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS (POWER WAGON)
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TRANSFER CASE - NV241 GENII - SERVICE INFORMATION
TABLE OF CONTENTS
page
page
TRANSFER CASE - NV241 GENII - SERVICE
INFORMATION
DESCRIPTION
. . . . . . . . . . . . . . . . . . . . . . . 1331
. . . . . . . . . . . . . . . . . . . . . . . . . 1332
DIAGNOSIS AND TESTING - TRANSFER
. . . . . . . . . . . . . . . . . 1332
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1334
. . . . . . . . . . . . . . . . . . . . . . . 1334
. . . . . . . . . . . . . . . . . . . . . . . . . . 1346
. . . . . . . . . . . . . . . . . . . . . . . . . 1347
. . . . . . . . . . . . . . . . . . . . . . . . . . 1349
. . . . . . . . . . . . . . . . . . . . . . . 1363
SEAL-EXTENSION HOUSING
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1367
. . . . . . . . . . . . . . . . . . . . . . . 1367
FLUID
STANDARD PROCEDURE - FLUID DRAIN AND
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1367
FRONT OUTPUT SHAFT SEAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1368
. . . . . . . . . . . . . . . . . . . . . . . 1369
LEVER-SHIFT
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1370
. . . . . . . . . . . . . . . . . . . . . . . 1371
TRANSFER CASE - NV241 GENII - SERVICE INFORMATION
DESCRIPTION
The NV241 GENII transfer case (1) is a part-time
transfer case with a low-range gear system. It pro-
vides three operating ranges plus a NEUTRAL posi-
tion. The low range position provides a gear reduction
ratio of 2.72:1 for increased low speed torque capabil-
ity.
The gear cases and extension are all of aluminum.
Drive sprockets and an interconnecting drive chain are
used to transmit engine torque to the front/rear propel-
ler shafts. The mainshaft, input gear and front output
shaft are supported by ball and needle bearings.
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TRANSFER CASE - NV241 GENII - SERVICE INFORMATION
21 - 1331
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