Pinpoint Tests AC: The Performance Shift Warning Indicator Is Never/Always On (Shelby GT 500 Only)

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AC: The Performance Shift Warning Indicator Is Never/Always On (Shelby GT 500 Only)

Normal Operation

The performance shift warning indicator shares the SVT logo on the tachometer. The performance shift indicator is configurable on or off and uses engine rpm to determine when to illuminate. The SVT logo is normally backlit in red when the performance indicator is configured off. When the performance shift warning indicator is configured on, the SVT logo red backlighting is turned off. When a preset engine rpm is reached, the SVT logo illuminates orange to alert the driver of the selected shift point. The performance shift warning indicator can be configured on or off through the message center.

The performance shift indicator receives the engine rpm status from the PCM over the High Speed Controller Area Network (HS-CAN) communication bus lines. When the engine rpm is equal to the preset (configured) shift rpm, the Instrument Cluster (IC) turns on the performance shift indicator.

This pinpoint test is intended to diagnose the following:

- PCM
- IC



PINPOINT TEST AC: THE PERFORMANCE SHIFT WARNING INDICATOR IS NEVER/ALWAYS ON (SHELBY GT 500 ONLY)

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AC1 CHECK THE PERFORMANCE SHIFT CONFIGURATION


- Verify that the performance shift indicator is configured on. Refer to Message Center Configuration Reset Procedure or the Owner's Literature for additional information.
- Is the performance shift indicator configured on?

Yes
GO to AC2.

No
CONFIGURE the performance shift indicator on. REFER to Message Center Configuration Reset Procedure or the Owner's Literature for additional information. TEST the system for normal operation.

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AC2 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PCM SELF-TESTS


- Retrieve the recorded DTCs from the PCM continuous and on-demand self-tests.
- Are any DTCs retrieved?

Yes
REFER to Computers and Control Systems Information.

No
GO to AC3.

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AC3 CARRY OUT THE IC INDICATOR LAMP CONTROL ACTIVE COMMAND


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC all lamps (ALL_LAMP) active command on then off while monitoring the performance shift indicator.
- Does the performance shift indicator turn on when commanded on and turn off when commanded off?

Yes
INSTALL a new PCM. TEST the system for normal operation.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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