General Information

A large number of ECU controlled systems are used in the CAMRY. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ECU controlled system's circuits one by one. An adequate understanding of the system and a basic knowledge of electricity is enough to perform effective troubleshooting, accurate diagnoses and necessary repairs. Detailed information and troubleshooting procedures on major ECU controlled systems in this vehicle are outlined below:

System

Page

1. S FI System (2AZ-FE)

05-1

2. SFI System (2AZ-FE) (PZEV)

05-346

3. SFI System (1MZ-FE/3MZ-FE)

05-491

4. ABS with EBD System (BOSCH made)

05-869

5. ABS with EBD System (DENSO made)

05-928

6. ABS with EBD & BA & TRAC & VSC System

05-980

7. Electronic Controlled Automatic Transmission [ECT] (U250E)

05-1104

8. Electronic Controlled Automatic Transmission [ECT] (U151E)

05-1232

9. Air Conditioning System

05-1360

10.Supplemental Restrant System

05-1443

11 .Lighting System

05-1787

12.Audio System

05-1819

13.Navigation System

05-1888

14.Combination Meter

05-1992

15.Power Window Control System

05-2055

16.Power Door Lock Control System

05-2072

17.Wireless Door Lock Control System

05-2088

18.Engine immobiliser System

05-2106

19.Theft Deterrent System

05-2133

20.Multiplex Communication System

05-2148

21 .Can Comunication System

05-2161

22.Cruise Control System

05-2206

FOR USING OBD II SCAN TOOL OR HAND-HELD TESTER

• Before using the scan tool or tester, the scan tool's instruction book or tester's operator manual should

FOR USING OBD II SCAN TOOL OR HAND-HELD TESTER

• Before using the scan tool or tester, the scan tool's instruction book or tester's operator manual should be read thoroughly.

• If scan tool or tester cannot communicate with the ECU controlled systems when you have connected the cable of the tester to the DLC3 with the ignition switch and tester turned ON, there is a problem on the vehicle side or tester side.

(1) If communication is normal when the tester is connected to another vehicle, inspect the diagnosis data link line (Bus ± line) or ECU power circuit of the vehicle.

(2) If communication is still impossible when the tester is connected to another vehicle, the problem is probably in the tester itself, so perform the Self Test procedures outlined in the Tester Operator's Manual.

Do It Yourself Car Diagnosis

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Responses

  • heather
    How to diagnose toyota 2azfe electronically controlled transmission?
    7 years ago
  • Albertina Bergamaschi
    How to troubleshoot ecu controlled systems camry?
    2 years ago

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