Section 1 (Engine Controls - Tests W/Codes)
WARNING: This page is about a different car, the 1993 Toyota Celica. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Summary
- Trouble Code Diagnostic Hints
- Trouble Code Identification
- Trouble Code Diagnostic Charts
- Notes
- ECM Terminal Identification
- Diagnostic Circuit Check
- Test 1 - ECM Power Source
- Test 2 - ECM (+B) Circuit
- Code 12, 13 - Rpm Signal
- Code 14/Test 3 - Ignition Signal
- Code 16 - Electronic-Controlled A/T Signal
- Code 21, 27/Test 4 - Oxygen Sensor Signal
- Code 22/Test 5 - Coolant Temperature Sensor Signal
- Code 24/Test 6 - Intake Air Temperature Sensor Signal
- Code 25 - Lean Air/Fuel Mixture
- Code 26 - Rich Air/Fuel Mixture
- Code 31/No. 7 - Vacuum Sensor Signal (4A-FE & 5S-FE)
- Code 31, 32/Test 7 - Airflow Meter Signal (3S-GTE)
- Code 34, 35/Test 8 - Turbocharger Pressure (3S-GTE)
- Code 41/Test 9 - Throttle Position Sensor Signal (3S-GTE)
- Code 41/Test 9 - Throttle Position Sensor Signal (4A-FE)
- Code 41/Test 9 - Throttle Position Sensor Signal (5S-FE)
- Code 42 - Vehicle Speed Sensor Signal
- Code 43/Test 10 - Starter Signal
- Code 51/Test 11 - Switch Signal
- Code 52 - Knock Sensor Signal (3S-GTE & 5S-FE)
- Code 53 - Knock Sensor Control (ECM) (3S-GTE)
- Code 71/Test 12 - EGR System Malfunction
- Test 13 - Injector Circuit
- Test 14 - Idle Speed Control Circuit
- Test 15 - Check Engine Light Circuit