Dodge Ram Truck 1500-2500-3500. Manual — part 1832

MISSING TRANSMISSION POSITION INPUT (CONTINUED)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Continuously with the ignition on.

•

Set Condition:
The Transfer Case Control Module receives no Transmission Position bus message for 5 seconds.

Possible Causes

COMMUNICATION DTC PRESENT

CLUSTER DTC PRESENT

TRANSMISSION DTC PRESENT

INTERMITTENT MISSING TRANSMISSION POSITION INPUT DTC

TRANSFER CASE CONTROL MODULE

1.

COMMUNICATION DTCS PRESENT

Ignition on, engine not running.

With the DRBIII

T

, read Engine DTCs.

Are there any Communication DTCs present?

Yes

>> Refer to the Communication category and perform the appropriate diagnostic procedure.

Perform TRANSFER CASE VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
TRANSFER CASE - DIAGNOSIS AND TESTING)

No

>> Go To 2

2.

CLUSTER DTCS PRESENT

With the DRBIII

T

, read Cluster DTCs.

Are there any DTCs present in the Instrument Cluster?

Yes

>> Perform the appropriate diagnostic procedure.

Perform TRANSFER CASE VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
TRANSFER CASE - DIAGNOSIS AND TESTING)

No

>> Go To 3

3.

TRANSMISSION DTCS PRESENT

With the DRBIII

T

, read Transmission DTCs.

Are there any DTCs present in the Transmission module?

Yes

>> Perform the appropriate diagnostic procedure.

Perform TRANSFER CASE VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
TRANSFER CASE - DIAGNOSIS AND TESTING)

No

>> Go To 4

21 - 1260

TRANSFER CASE - ELECTRICAL DIAGNOSTICS (ETC)

DR/DH

MISSING TRANSMISSION POSITION INPUT (CONTINUED)

4.

MISSING TRANSMISSION POSITION INPUT DTC PRESENT

With the DRBIII

T

, read Transfer Case DTCs. Record all DTC information.

With the DRBIII

T

, erase Transfer Case DTCs.

Start the engine and allow it to idle for at least 10 seconds.

Move the Transfer Case Mode Selector Switch to each position.

With the DRBIII

T

, read Transfer Case DTCs.

Does the DRBIII

T

display MISSING TRANSMISSION POSITION INPUT?

Yes

>> Go To 5

No

>> Go To 6

5.

TRANSFER CASE CONTROL MODULE

Using the wiring diagram as a guide, inspect the wiring and connectors relative to this DTC. Inspect all power and
ground circuits. Repair as necessary.

If there are no Communication DTCs present or other possible causes remaining, view repair.

Repair

Replace the Transfer Case Control Module.

Perform TRANSFER CASE VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
TRANSFER CASE - DIAGNOSIS AND TESTING)

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 TRANSFER CASE VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
TRANSFER CASE - DIAGNOSIS AND TESTING)

No

>> Test Complete.

DR/DH

TRANSFER CASE - ELECTRICAL DIAGNOSTICS (ETC)

21 - 1261

MISSING TRANSMISSION TYPE

21 - 1262

TRANSFER CASE - ELECTRICAL DIAGNOSTICS (ETC)

DR/DH

MISSING TRANSMISSION TYPE (CONTINUED)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Continuously with the ignition on.

•

Set Condition:
The Transfer Case Control Module receives no ABS bus message for 5 seconds.

Possible Causes

COMMUNICATION DTCS PRESENT

INTERMITTENT MISSING TRANSMISSION TYPE DTC

TRANSFER CASE CONTROL MODULE

1.

COMMUNICATION DTCS PRESENT

Ignition on, engine not running.

With the DRBIII

T

, read DTCs in all modules.

Are there any Communication DTCs present?

Yes

>> Refer to the Communication category and perform the appropriate diagnostic procedure.

Perform TRANSFER CASE VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
TRANSFER CASE - DIAGNOSIS AND TESTING)

No

>> Go To 2

2.

MISSING TRANSMISSION TYPE DTC PRESENT

With the DRBIII

T

, read Transfer Case DTCs. Record all DTC information.

With the DRBIII

T

, erase Transfer Case DTCs.

Start the engine and allow it to idle for at least 10 seconds.

Move the Transfer Case Mode Selector Switch to each position.

With the DRBIII

T

, read Transfer Case DTCs.

Does the DRBIII

T

display MISSING TRANSMISSION TYPE?

Yes

>> Go To 3

No

>> Go To 4

3.

TRANSFER CASE CONTROL MODULE

Using the wiring diagram as a guide, inspect the wiring and connectors relative to this DTC. Inspect all power and
ground circuits. Repair as necessary.

If there are no Communication DTCs present or other possible causes remaining, view repair.

Repair

Replace the Transfer Case Control Module.

Perform TRANSFER CASE VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
TRANSFER CASE - DIAGNOSIS AND TESTING)

DR/DH

TRANSFER CASE - ELECTRICAL DIAGNOSTICS (ETC)

21 - 1263