Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1928

Theory of Operation

The Electronic Shift Module (ESM) monitors ignition voltage. The DTC will set, if the monitored battery voltage rises
above 16.0 volts.

•

When Monitored:
Continuously with the ignition on.

•

Set Condition:
When the monitored battery voltage rises above 16.0 volts.

Possible Causes

CHARGING SYSTEM DTCS

VEHICLE WAS JUMP STARTED INCORRECTLY

ELECTRONIC SHIFT MODULE (ESM)

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1 - STANDARD PROCEDURE)

Diagnostic Test

1.

CHECK FOR CHARGING SYSTEM DTCS

With the scan tool, read Engine DTCs.

NOTE: This includes any one trip faults.

Are there any Engine Charging System DTCs present?

Yes

>> Refer to the Engine category and perform the appropriate symptom. (Refer to 9 - ENGINE - DIAGNO-

SIS AND TESTING)

Perform NAG1 TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
AUTOMATIC - NAG1 - STANDARD PROCEDURE)

No

>> Go To 2

2.

VEHICLE WAS JUMP STARTED INCORRECTLY

Verify if the vehicle was jump started by another vehicle using a 24-volt charging system or incorrectly jump started
with the 12-volt battery in series.

Was the vehicle jump started by another vehicle?

Yes

>> This is the cause of the DTC. Erase the DTC and return the vehicle to the customer.

Perform NAG1 TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
AUTOMATIC - NAG1 - STANDARD PROCEDURE)

No

>> Go To 3

3.

ELECTRONIC SHIFT MODULE

Reconnect all disconnected harness connectors.

With the scan tool, erase ESM DTCs.

Start the engine and raise the engine speed to 2000 RPM.

With the scan tool, read ESM DTCs.

Did the P0563-BATTERY VOLTAGE HIGH DTC reset?

Yes

>> Using the schematics as a guide, check the Electronic Shift Module (ESM) terminals for corrosion, dam-

age, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are
found, replace the ESM (Steering Column) per the Service Information.

Perform NAG1 TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
AUTOMATIC - NAG1 - STANDARD PROCEDURE)

No

>> Test Complete.

21 - 246

AUTOMATIC TRANSMISSION NAG1 - SHIFTER DIAGNOSTICS

LX

P0607-ECU INTERNAL PERFORMANCE - ESM (COLUMN SHIFT)

For a complete wiring diagramRefer to Section 8W

LX

AUTOMATIC TRANSMISSION NAG1 - SHIFTER DIAGNOSTICS

21 - 247

Theory of Operation

The Electronic Shift Module (ESM) performs various internal tests to verify proper controller operation. This DTC
indicates that there is an issue with the Shifter’s internal processor.

•

When Monitored:
Continuously with the ignition on.

•

Set Condition:
If the Electronic Shift Module (ESM) detects an error with the optical sensors or internal checksum value is not
correct.

Possible Causes

ELECTRONIC SHIFT MODULE (ESM)

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1 - STANDARD PROCEDURE)

Diagnostic Test

1.

ELECTRONIC SHIFT MODULE

View repair

Repair

Using the schematics as a guide, check the Electronic Shift Module (ESM) terminals for corrosion, dam-
age, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are
found, replace the ESM (Steering Column) per the Service Information.

Perform NAG1 TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/
AUTOMATIC - NAG1 - STANDARD PROCEDURE)

21 - 248

AUTOMATIC TRANSMISSION NAG1 - SHIFTER DIAGNOSTICS

LX

P0930-BTSI CONTROL CIRCUIT LOW - ESM (COLUMN SHIFT)

For a complete wiring diagramRefer to Section 8W

LX

AUTOMATIC TRANSMISSION NAG1 - SHIFTER DIAGNOSTICS

21 - 249