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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Automatic Transmission Troubleshooting) >> Troubleshooting >> Sport Mode Switch/Indicator Always On or Inoperative >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

The numbers below refer to the step numbers on the diagnostic table.

  1. 1:  Diagnose all communication and body DTCs first. The DTC may be the source of the symptom.
  2. 4:  No PRNDL display could be open in the electronic PRNDL assembly accessory circuit.
  3. 6:  This step tests the sport mode circuit by bypassing the electronic PRNDL assembly.
Sport Mode Switch/Indicator Always On or Inoperative

Step Action Value(s) Yes No
1 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Select DTC Info.
Does the scan tool display DTCs that start with "U" or "B"?		 - Go to Diagnostic Trouble Code (DTC) List in Body Control System Go to Step 2 
2
  1. Place the gear selector in Park.
  2. Turn the ignition to the RUN position with the engine OFF.
  3. While observing the sport mode indicator on the IPC, press the sport mode switch several times.
Does the sport mode indicator illuminate On and Off with switch operation?		 - Go to Intermittent Conditions in Engine Controls - 2.6L and 3.2L or Intermittent Conditions in Engine Controls - 3.6L (LY7) Go to Step 3 
3 Is the sport mode indicator always On? - Go to Step 9  Go to Step 4 
4  Move the gear selector from Park through all gear positions while observing the electronic PRNDL display.
Does the PRNDL display all gear positions?		 - Go to Step 6  Go to Step 5 
5 Test the accessory voltage circuit for an open. Refer to Testing for Continuity in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 7 
6 
  1. Disconnect the electronic PRNDL assembly.
  2. Install a fused jumper between terminal 3 and 6 of the electronic PRNDL connector.
  3. Observe the sport mode indicator on the IPC.
Is the sport mode indicator illuminated?		 - Go to Step 11  Go to Step 7 
7 Test the electronic PRNDL ground circuits for an open. Refer to Testing for Continuity in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Diagnostic Starting Point - Body Control System in Body Control System
8 Test the sport mode switch signal circuit for an open. Refer to Testing for Continuity in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 9 
9 Test the sport mode switch signal circuit for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 10 
10 While observing the sport mode indicator on the IPC, disconnect the electronic PRNDL assembly from the console wiring harness connector.
Is the IPC sport mode indicator no longer illuminated?		 - Go to Step 11  Go to Diagnostic Starting Point - Body Control System in Body Control System
11 Replace the electronic PRNDL assembly. Refer to Console Replacement - Front Floor in Instrument Panel, Gages, and Console.
Is the action complete?		 - Go to Step 12  -
12 After repairs, test the sport/economy mode under the following conditions:
  • With the ignition in the RUN position, the IPC sport mode indicator does not illuminate during the bulb test.
  • Engine running:
    • The IPC sport mode indicator illuminates when the sport mode button is pressed.
    • The IPC sport mode indicator does not illuminate when the sport mode button is pressed again.
  • Vehicle operating in drive:
    • Noticeable change in the shift pattern when the sport mode is selected On and then Off.
    • The shift pattern returns to the economy mode after the ignition is cycled.

Does the sport/economy mode operate as described?		 - System OK Go to Step 1 
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