Chrysler Crossfire. Manual - part 761

OVERVOLTAGE (CONTINUED)

POSSIBLE CAUSES

ENGINE CHARGING SYSTEM DTCS PRESENT

FUSED IGNITION SWITCH OUTPUT OR TRACTION SYSTEM RELAY OUTPUT CIRCUITS HIGH AT SLA

SHIFT LEVER ASSEMBLY

For a complete Shift Lever Assembly Circuit Diagram, (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC -
NAG1 - SCHEMATICS AND DIAGRAMS).

Diagnostic Test

ENGINE CHARGING SYSTEM DTCS PRESENT

Turn the ignition on.

With the DRB III

, read the engine DTCs.

Are any Engine Charging System DTCs present?

Yes

>> Refer to the Engine - Electrical Diagnostics category and

perform the appropriate symptom.

Go To 2

FUSED IGNITION SWITCH OUTPUT OR TRACTION SYSTEM RELAY OUTPUT CIRCUITS OVERVOLTAGE

Turn the ignition off.

Disconnect the Shift Lever Assembly harness connector.

Note: Check connectors - Clean/repair as necessary.
Start the engine and raise the engine speed to 1500 RPM.

Measure the voltage of the Fused Ignition Switch Output and Traction
System Relay Output circuits at the SLA harness connector.

Is the voltage above 16.0 volts ± 0.3 volt?

Yes

>> Repair the Fused Ignition Switch Output and Traction Sys-

tem Relay Output circuits for an overvoltage condition.

Perform NAG1 TRANSMISSION VERIFICATION TEST.

>> Replace the Shift Lever Assembly. (Refer to 21 - TRANS-

MISSION/TRANSAXLE/AUTOMATIC

NAG1/SHIFT

MECHANISM - REMOVAL).

Perform NAG1 TRANSMISSION VERIFICATION TEST.

NAG1 - ELECTRICAL DIAGNOSTICS

21 - 193

UNDERVOLTAGE

21 - 194

NAG1 - ELECTRICAL DIAGNOSTICS

UNDERVOLTAGE (CONTINUED)

POSSIBLE CAUSES

ENGINE CHARGING SYSTEM DTCS PRESENT

FUSED IGNITION SWITCH OUTPUT OR TRACTION SYSTEM RELAY OUTPUT LOW AT SLA

SHIFT LEVER ASSEMBLY

For a complete Shift Lever Assembly Circuit Diagram, (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC -
NAG1 - SCHEMATICS AND DIAGRAMS).

Diagnostic Test

ENGINE CHARGING SYSTEM DTCS PRESENT

Turn the ignition on.

With the DRB III

, read the engine DTCs.

Are any Engine Charging System DTCs present?

Yes

>> Refer to the Engine - Electrical Diagnostics category and

perform the appropriate symptom.

Go To 2

FUSED IGNITION SWITCH OUTPUT OR TRACTION SYSTEM RELAY OUTPUT LOW AT SLA

Turn the ignition off.

Disconnect the Shift Lever Assembly harness connector.

Note: Check connectors - Clean/repair as necessary.
Start the engine and raise the engine speed to 1500 RPM.

Measure the voltage of the Fused Ignition Switch Output and Traction
System Relay Output circuits at the SLA harness connector.

Is the voltage below 9.0 volts for either circuit?

Yes

>> Repair the Fused Ignition Switch Output or Traction Sys-

tem Relay Output circuit for an open.

Perform NAG1 TRANSMISSION VERIFICATION TEST.

>> Replace the Shift Lever Assembly. (Refer to 21 - TRANS-

MISSION/TRANSAXLE/AUTOMATIC

NAG1/SHIFT

MECHANISM - REMOVAL).

Perform NAG1 TRANSMISSION VERIFICATION TEST.

NAG1 - ELECTRICAL DIAGNOSTICS

21 - 195

TRANSMISSION VERIFICATION TEST

Reconnect any disconnected components.

Connect the DRB III

to the Data Link Connector.

With the DRB III

, erase ABS DTCs.

With the DRB III

, erase PCM DTCs.

With the DRB III

, erase TCM DTCs.

With the DRB III

, display the Transmission temperature. Start and run the engine until the Transmission temper-

ature is above 43°C (110°F).

Check the Transmission fluid and adjust if necessary. Refer to the Service Information for the proper Fluid Fill pro-
cedure.

After any repair that involves replacement of the transmission, TCM, Transmission Solenoid Assembly or internal
transmission parts, perform the TCM Quick Learn procedure. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/TRANSMISSION CONTROL MODULE - STANDARD PROCEDURE).

Note: If internal repairs were performed and the shift quality is still poor, it may be necessary to check the
internal repair.
ROAD TEST PROCEDURE

Road test the vehicle. Make fifteen to twenty 1–2, 2–3, 3–4, and 4–5 upshifts.

Perform these shifts from a standing start to 72 km/h (45 MPH) with a constant throttle opening of 20 to 25 degrees.

With speeds below 40 km/h (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.

With the DRB III

, read Transmission DTCs.

Were any Diagnostic Trouble Codes set?

Yes

Repair is not complete, refer to appropriate symptom.

Repair is complete.

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NAG1 - ELECTRICAL DIAGNOSTICS

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