Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1892
P1632-TCM INTERNAL - TEST INTERNAL WATCHDOG PERFORMANCE
For a complete wiring diagram Refer to Section 8W
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AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS
LX
Theory of Operation
The Transmission Control Module (TCM) performs various internal tests to verify proper controller operation. This
DTC indicates that there is an issue with the TCM’s internal watchdog failed. If the TCM detects an error with the
controllers internal watchdog, the controller will enter Limp-in mode and illuminate the MIL.
•
When Monitored:
Continuously with the ignition on.
•
Set Condition:
If the TCM detects an error with the controllers internal watchdog.
Possible Causes
TRANSMISSION CONTROL MODULE
Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1 - STANDARD PROCEDURE)
Diagnostic Test
1.
TRANSMISSION CONTROL MODULE
View repair
Repair
Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion,
damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems
are found, replace the TCM per the Service Information. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/TRANSMISSION CONTROL MODULE - DESCRIPTION)
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - NAG1 - STANDARD PROCEDURE)
LX
AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS
21 - 103
P1633-TCM INTERNAL - TEST EXTERNAL WATCHDOG PERFORMANCE
For a complete wiring diagram Refer to Section 8W
21 - 104
AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS
LX
Theory of Operation
The Transmission Control Module (TCM) performs various internal tests to verify proper controller operation. This
DTC indicates that there is an issue with the TCM’s external watchdog. If the TCM detects an error with the con-
trollers external watchdog, failed the power up test, the controller will enter Limp-in mode and illuminate the MIL.
•
When Monitored:
Continuously with the ignition on.
•
Set Condition:
If the TCM detects an error with the controllers external watchdog—failed the power up test.
Possible Causes
TRANSMISSION CONTROL MODULE
Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1 - STANDARD PROCEDURE)
Diagnostic Test
1.
TRANSMISSION CONTROL MODULE
View repair
Repair
Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion,
damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems
are found, replace the TCM per the Service Information. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/TRANSMISSION CONTROL MODULE - DESCRIPTION)
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - NAG1 - STANDARD PROCEDURE)
LX
AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS
21 - 105
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