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Home >> Suzuki >> 2006 >> Verona Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System - DTC P0461 Through U0121 >> DTC P2112: Throttle Actuator Control (TAC) Throttle Valve Stuck Closed >> DTC Troubleshooting
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DTC Troubleshooting

DTC TROUBLESHOOTING CHART

Step Action Value (s) Yes No
1 Did you perform the DIAGNOSTIC SYSTEM CHECK ? - Go to Step 2. Go to ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK .
2
  1. Turn the ignition ON, with the engine OFF.
  2. Clear the DTCs with a scan tool.
  3. Turn the ignition OFF for 30 seconds.
  4. Start the engine.
  5. Move the accelerator pedal from the rest position to the wide open position a couple of times.
  6. Observe the DTC Information with a scan tool.

Did the DTC fail this ignition?		 - Go to Step 4. Go to Step 3.
3
  1. Observe the Freeze Frame/Failure records data for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Setting the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure records data.

Did the DTC fail this ignition?		 - Go to Step 4. Go to Diagnostic Aids .
4
  1. Turn the ignition OFF.
  2. Disconnect the air cleaner resonator outlet duct from the throttle body.
  3. Inspect the throttle body valve and bore for the following conditions:

    For foreign accumulation in the throttle bore.

    For coking on the throttle valve.

    For coking on the throttle shaft.


Did you find a condition with the throttle body?		 - Go to Step 5. Go to Step 6.
5
  1. Clean the throttle body valve and bore.
  2. Turn the ignition ON, with the engine OFF.
  3. Clear the DTCs with a scan tool.
  4. Turn the ignition OFF for 30 seconds.
  5. Start the engine.
  6. Move the accelerator pedal from the rest position to the wide open position a couple of times.
  7. Observe the DTC Information with a scan tool.

Did the DTC fail this ignition?		 - Go to Step 6. Go to Step 8.
6 Test for an intermittent and for a poor connection at the throttle body harness connector and at the Engine Control Module (ECM).
Did you find and correct the condition?		 - Go to Step 8. Go to Step 7.
7
  1. Replace the throttle body.
  2. Perform the IDLE LEARN PROCEDURE .

Did you complete the replacement?		 - Go to Step 8. -
8
  1. Clear the DTCs with a scan tool.
  2. Turn the ignition OFF for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Setting the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.

Did the DTC fail this ignition?		 - Go to Step 2. Go to Step 9.
9 Check if any additional DTCs are set.
Are there any DTCs that have not been diagnosed?		 - Go to applicable DTC Table . System OK
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