Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1931
For a complete wiring diagramRefer to Section 8W
•
When Monitored:
When in AutoStick
T
mode.
•
Set Condition:
When the expected AutoStick
T
switch state is not correctly sensed by the Electronic Shift Module (ESM). If the
upshift switch signal is detected as active in a gear position other than drive or when both the upshift and
downshift signals are active at the same time.
Possible Causes
AUTOSTICK SWITCH
ELECTRONIC SHIFT MODULE
Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1 - STANDARD PROCEDURE)
Theory of Operation
The AutoStick
T
Switch is located at the end of the Shift Lever. The gear change is requested by pressing the Auto-
Stick Enable button, then either selecting the Upshift or Downshift on the rocker switch. The ESM then transmits the
previous information over the CAN C bus to the TCM to engage the requested gear.
Diagnostic Test
1.
CHECK THE AUTOSTICK SWITCH
AUTOSTICK SWITCH RESISTANCE VALUES (COLUMN SHIFT)
NON SWITCHED STATE
ENABLE
DOWNSHIFT
UPSHIFT
21.5k ohms ±1%
2.64k ohms ±1%
4.05k ohms ±1%
8.10k ohms ±1%
Turn the ignition off to the lock position.
Disconnect the AutoStick
T
harness connector.
Measure the resistance between the AutoStick Switch MUX circuit and
the AutoStick Switch MUX Return circuit while checking each switch
position.
NOTE: Use the above chart to and compare your resistive read-
ings.
Does the AutoStick Switch resistance readings match the
above chart?
Yes
>> Using the schematics as a guide, check the Electronic Shift
Module (ESM) terminals for corrosion, damage, or terminal
push out. Pay particular attention to all power and ground
circuits. If no problems are found, replace the ESM (Steer-
ing Column) per the Service Information.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
(Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC -
NAG1 - STANDARD PROCEDURE)
No
>> Replace the AutoStick Switch (Shift Lever) per the Service Information.
Perform NAG1 TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
AUTOMATIC - NAG1 - STANDARD PROCEDURE)
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AUTOMATIC TRANSMISSION NAG1 - SHIFTER DIAGNOSTICS
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U0002-CAN C BUS OFF PERFORMANCE - ESM (COLUMN SHIFT)
For a complete wiring diagramRefer to Section 8W
Theory of Operation
Some controllers communicate with other controllers over the CAN C BUS. The Electronic Shift Module (ESM) con-
tinuously monitors BUS activity and reads the messages it needs. The CAN C BUS is also used to communicate
the MIL status to the Engine Controller.
For CAN BUS diagnostic procedures (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNO-
SIS AND TESTING).
U0100-LOST COMMUNICATION WITH ECM/PCM - ESM (COLUMN SHIFT)
For a complete wiring diagramRefer to Section 8W
Theory of Operation
Some controllers communicate with other controllers over the CAN C BUS. The Electronic Shift Module (ESM) con-
tinuously monitors BUS activity and reads the messages it needs. The CAN C BUS is also used to communicate
the MIL status to the Engine Controller.
For CAN BUS diagnostic procedures (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNO-
SIS AND TESTING).
U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE - ESM
(COLUMN SHIFT)
For a complete wiring diagramRefer to Section 8W
Theory of Operation
Some controllers communicate with other controllers over the CAN C BUS. The Electronic Shift Module (ESM) con-
tinuously monitors BUS activity and reads the messages it needs. The CAN C BUS is also used to communicate
the MIL status to the Engine Controller.
For CAN BUS diagnostic procedures (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNO-
SIS AND TESTING).
U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE - ESM (COLUMN
SHIFT)
For a complete wiring diagramRefer to Section 8W
Theory of Operation
Some controllers communicate with other controllers over the CAN C BUS. The Electronic Shift Module (ESM) con-
tinuously monitors BUS activity and reads the messages it needs. The CAN C BUS is also used to communicate
the MIL status to the Engine Controller.
For CAN BUS diagnostic procedures (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNO-
SIS AND TESTING).
STANDARD PROCEDURE
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AUTOMATIC TRANSMISSION NAG1 - SHIFTER DIAGNOSTICS
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NAG1 PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE
For a complete wiring diagram Refer to Section 8W
Perform the following pre-diagnostic troubleshooting procedures prior to performing any diagnostic test.
Low fluid level can be the cause of many transmission problems. If the fluid level is low, locate and repair the leak
then check and adjust the fluid level in accordance with the Service Information.
Always perform diagnostics with a fully charged battery to avoid false symptoms.
1. With the scan tool, read the engine DTCs. Check and repair all engine DTCs prior to performing transmission
symptom diagnostic procedures.
2. With the scan tool, read and record all Transmission DTCs.
NOTE: If the TCM detects and stores a DTC, the TCM also stores the vehicles operating conditions under
which the DTC originally set and is located in scan tool under Environmental Data. Before erasing any
stored DTCs, it is recommended to record any available data to assist in duplicating the conditions in which
the DTC originally set.
3. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Clean and repair as neces-
sary.
4. Most DTCs set on start up but some must be set by driving the vehicle such that all diagnostic monitors have
run.
5. Verify flash level of transmission controller. Some problems are corrected by software upgrades to the transmis-
sion controller. Verify that no variant DTCs are present. If variant DTCs are present, perform their respective test
first.
6. If the TCM (EGS) is flashed, perform a EGS initialization with the scan tool to relearn variant coding.
7. Check for any Service Information Tune-ups or Service Bulletins that may apply.
1.
Did any of the above procedures repair the vehicle?
Yes
>> Testing is complete.
Perform NAG1 TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
AUTOMATIC - NAG1 - STANDARD PROCEDURE)
No
>> Refer to the identified category and perform the appropriate symptom(s).
(Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 42RLE - DIAGNOSIS AND TESTING)
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AUTOMATIC TRANSMISSION NAG1 - SHIFTER DIAGNOSTICS
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NAG1 TRANSMISSION VERIFICATION TEST
To validate that the repair(s) fixed the vehicle, perform the following steps.
1. Reconnect any disconnected components.
2. Connect the scan tool to the Data Link Connector.
3. With the scan tool, erase ABS DTCs.
4. With the scan tool, erase PCM DTCs.
5. With the scan tool, erase TCM DTCs.
CAUTION: Apply the parking brake.
NOTE: The Transmission Temperature can only be read while in Reverse or Drive.
6. With the scan tool, display the Transmission temperature. Start and run the engine until the Transmission tem-
perature is above 43° C (110° F).
7. Check the Transmission fluid and adjust if necessary. Refer to the Service Information for the proper Fluid Fill
procedure. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1/FILTER - STANDARD PROCE-
DURE)
8. If the TCM (EGS) is flashed or replaced, with the scan tool, perform a EGS initialization to relearn variant coding.
9. If internal transmission repairs are performed or replacement of the Transmission Control Module, perform a
TCM ADAPTATION procedure. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/TRANSMIS-
SION CONTROL MODULE - STANDARD PROCEDURE)
10. After performing the above procedures, perform the Road Test Procedure.
ROAD TEST PROCEDURE
1. Road test the vehicle. Make fifteen to twenty 1-2, 2-3, 3-4, and 4-5 upshifts.
2. Perform these shifts from a standing start to 72 Kmh (45 mph) with a constant throttle opening of 20 to 25
degrees.
3. With speeds below 40 Kmh (25 mph), make five to eight wide open throttle kickdowns to 1st gear. Allow at least
5 seconds each in 2nd and 3rd gear between each kickdown.
4. With the scan tool, read DTCs.
1.
Did any DTCs set?
Yes
>> Refer to the identified category and perform the appropriate symptom(s).
No
>> Testing is complete.
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