Section 12 (Engine Controls - Tests W/Codes - EFI)
WARNING: This page is about a different car, the 1990 Toyota Cressida and 1989 Toyota Cressida. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Ecu Location
- "Hard Failures"
- "Intermittent Failures"
- Check Engine Light
- Retrieving Trouble Codes
- Notes On Trouble Codes
- Clearing Trouble Codes
- Repair Procedure
- Summary
- Trouble Code Charts
- Diagnostic Circuit Check
- Ecu Terminal Identification
- Test 1 Or Code 11 - Ecu (B+) Circuit
- Test 2 Or Code 12, 13, 14 - Ignition & Rpm Signal
- Code 16 - ECT Signal
- Code 21 - Oxygen Sensor Signal
- Test 3 Or Code 22 - Coolant Temperature Sensor Signal
- Test 4 Or Code 24 - Intake Air Temp Sensor Signal
- Code 25 - Lean Air/Fuel Mixture
- Code 26 - Rich Air/Fuel Mixture
- Test 5 Or Code 27 - Oxygen Sensor Circuit
- Test 6 Or Code 31, 32 - Airflow Meter Signal
- Test 7 Or Code 41 - Throttle Position Sensor Signal
- Code 42 - Vehicle Speed Sensor Signal
- Test 8 Or Code 43 - Starter Signal
- Code 51 - Switch Signal
- Code 52 - Knock Sensor Signal
- Code 53 - Knock Sensor Control (Ecu)
- Test 9 Or Code 71 - EGR System Malfunction
- Test 10 - Injector Circuit
- Test 11 - Idle Speed Control Circuit
- Test 12 - "Check Engine" Light Circuit
- Test 13- A/C Switch Circuit