Toyota Tacoma manuals

Toyota Corolla Repair Manual: Pre–check

1. Diagnosis check

  1. Starting diagnosis mode (service check mode)
  1.  turn off the audio system and turn the ig switch to acc. While pressing the preset switches ”1” and ”6” at the same time, press ”cd” 3 times.
  2. Reference:

Code no. (Physical address) list

Code no. (Physical address) list

  1. Finishing diagnosis mode
  1.  press ”cd” for 2 sec. Or more, or turn the ig switch off.
  1. Service check mode result display (for checking the current and the past system conditions)
  1.  press the ”tune” switch to see the check result of each device.

  1. Check result display

Display

Original language

Meaning

Action to be taken

Good Good (normal) No dtc is detected in both ”system check mode” and ”diagnosis memory mode”.

Ncon No connection The system recognized the component when it was registered, but the component gives no response to the ”diagnosis mode on request”. Check the power source circuit and the communication circuit of the device indicated by the device code (physical address).
Echn Exchange One or more dtc for ”exchange” is detected in either ”system check mode” or ”diagnosis memory mode”. Go to the detail information mode to check the trouble area referring to the dtc list.
Chec Check When no dtc is detected for ”exchange”, one or more dtc for ”check is detected in either ”system check mode” or ”diagnosis memory mode”. Go to the detail information mode to check the trouble area referring to the dtc list.
Old Old version Old dtc application is identified and dtc is detected in either ”system check mode” or ”diagnosis memory mode”.

Nres No response The device gives no response to any one of ”system check mode on request”, ”system check result request” and ”diagnosis memory request”. Check the power source circuit and the communication circuit of the device indicated by the device code (physical code).
  1. To perform the service check again, press the preset switch ”1”.
  1.  detail information mode (when displaying the troubled device’s dtc)
  1.  with ”chec” or ”echn” being display, press the preset switch ”2” to go to the detail information mode.
  2.  Press the ”tune” switch to display ”system check result (sys)” and ”diagnosis memory response (code)”.

  1. Displayed items in detail information mode

Division code for dtc display

Meaning

Order of detailed information displayed when the ”tune up” switch is pressed. (The order is reversed when the ”tune down” switch is pressed.)

Sys System check result is displayed. Logical address dtc
Code Diagnosis memory check result is displayed. Logical address dtc sub code connection confirmation number the number of times of occurrence
  1. Check the trouble area referring to the dtc list.

     

  2.  to return to the service check mode, press the preset switch ”3”.
  1.  clearing individual dtc memory (when clearing the memory of dtc detected in the pest individually)
  1. ) press the preset switch ”5” for 2 sec. Or more while the ”echn” is displayed in the service check mode or during the detail information mode.

Hint

:

  1.  clearance of all dtc memory (when clearing all the memory of dtc detected in the past)
  1.  start the diagnosis mode after repairing the trouble area.
  2.  Press the preset switch ”5” for 2 sec. Or more. (”Clr” is displayed at this time.)

Hint

:

  1.  Press the preset switch ”1” to perform the service check again, and check that no dtc is displayed for all the component codes. (Physical address)

2. Identification of noise source

  1. Identify the condition under which the noise occurs, and check the noise filter on the related part.

  1. Reference:
How to proceed with troubleshooting
1 Vehicle brought to workshop 2 Customer problem analysis 3 Check and clear dtc 4 Problem symptom confirmation Symptom does not occur (go to step 5) 5 Symptom simulation 6 Dtc check ...

Diagnostic trouble code chart
Terms Terms Physical address Three–digit code (shown in hexadecimal) which is given to each component comprising the avc–lan. Corresponding to the function, i ...

Other materials:

Components
...

Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the horn button assy. release the airbag act ...

Confirmation driving pattern
Connect the hand–held tester or the obd ii scan tool to the dlc3.  record dtcs and the freeze frame data.  set the check mode using the hand–held tester .  read the value on the misfire counter for each cylinder when idling. If the value is displayed on the misfire count ...

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