[17] ENGINE AND EMISSION CONTROL - - AUTO-CRUISE CONTROL <4G64-VEHICLES WITH AUTO-CRUISE CONTROL SYSTEM> - DIAGNOSTIC TROUBLE CODE PROCEDURES - Code No.17 Throttle Position Sensor, Idle Position Signal System | PRINT PAGE / INDEX / PRIOR / NEXT

Code No.17 Throttle Position Sensor, Idle Position Signal System
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set if the Idle position signal voltage is 2.5 volts or less and the throttle position sensor voltage is 4.0 - 5.5 volts for four seconds or more, and the Idle position signal voltage is 4.0 - 5.5 volts and the throttle position sensor voltage is 0.4 - 1.0 volt for four seconds or more.
PROBABLE CAUSES Malfunction of the connector. Malfunction of the harness. Malfunction of the throttle position sensor. Malfunction of the engine-A/T-ECU. Malfunction of the auto-cruise control-ECU.
DIAGNOSIS PROCEDURE
STEP 1. Check the throttle position sensor. Q: Is the MPI system MUT-II/III diagnosis code No. 14 set? YES: Refer to GROUP 13B - Troubleshooting . Then go to Step 11. NO: Go to Step 2.
STEP 2. Measure at auto-cruise control-ECU connector C-113. Do not disconnect auto-cruise control-ECU connector C-113 and measure at the backprobing. Ignition switch: ON Auto-cruise control MAIN switch: ON Voltage between terminal 1 and body earth. OK: 4.0 - 5.5 volts (When accelerator pedal is fully depressed). 0.4 - 1.0 volt (When accelerator pedal is released). Q: Is the check result normal? YES: Go to Step 5. NO: Go to Step 3.
STEP 3. Check auto-cruise control-ECU connector C-113 and intermediate connectors C-106 <L.H. drive vehicles only> and joint connector (1) C-16 <R.H. drive vehicles only>. Q: Is the check result normal? YES: Go to Step 4. NO: Repair or replace connector. Then go to Step 11.
STEP 4. Check the harness between the auto-cruise control-ECU C-113 and throttle position sensor connector B-06. Q: Is the check result normal? YES: Go to Step 10. NO: Repair harness. Then go to Step 11.
STEP 5. Measure at engine-A/T-ECU connector C-110. Do not disconnect engine-A/T-ECU connector C-110 and measure at the backprobing. Ignition switch: ON Auto-cruise control MAIN switch: ON Voltage between terminal 79 and body earth. OK: 4.0 - 5.5 volts Q: Is the check result normal? YES: Go to Step 8. NO: Go to Step 6.
STEP 6. Check engine-A/T-ECU connector C-110. Q: Is the check result normal? YES: Go to Step 7. NO: Repair or replace connector. Then go to Step 11.
STEP 7. Check the MUT-II/III diagnosis code No.17. Q: Is the MUT-II/III diagnosis code No. 17 set? YES: Replace the engine-A/T-ECU (Refer to GROUP 13B - Engine-A/T-ECU ). Then go to Step 11. NO: This malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
STEP 8. Check auto-cruise control-ECU connector C-113 and intermediate connectors C-106 <L.H. drive vehicles only>. Q: Is the check result normal? YES: Go to Step 9. NO: Repair or replace connector. Then go to Step 11.
STEP 9. Check the harness between the auto-cruise control-ECU C-113 and engine-A/T-ECU connector C-110. Q: Is the check result normal? YES: Go to Step 10. NO: Repair harness. Then go to Step 11.
STEP 10. Check the MUT-II/III diagnosis code No.17. Q: Is the MUT-II/III diagnosis code No. 17 set? YES: Replace the auto-cruise control-ECU (Refer to ). Then go to Step 11. NO: This malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).
STEP 11. Check the MUT-II/III diagnosis code No.17. Q: Is the MUT-II/III diagnosis code No. 17 set? YES: Return to Step 1. NO: This procedure is complete.

[17] ENGINE AND EMISSION CONTROL - - AUTO-CRUISE CONTROL <4G64-VEHICLES WITH AUTO-CRUISE CONTROL SYSTEM> - DIAGNOSTIC TROUBLE CODE PROCEDURES - Code No.17 Throttle Position Sensor, Idle Position Signal System | PRINT PAGE / INDEX / PRIOR / NEXT

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