Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2005CELICA GT-S, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEMODE 6 - 2005 TOYOTACOROLLA1ZZ-FE 1.8L
2005 Toyota Celica GT-S, Standard
1ZZ-FE 1.8L
2005 Toyota Celica GT-S, StandardSECTION 1ZZ-FE 1.8L
A/F RATIO SENSOR HEATER
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $07 | Front Air-Fuel Ratio (A/F) sensor heater | Maximum A/F sensor heater current | Multiply by 0.173 | A | Maximum threshold heater current to detect A/F sensor heater circuit malfunction |
HO2 SENSOR HEATER
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $04 | HO2 sensor heater | Maximum HO2 sensor heater current | Multiply by 0.000076 | A | Maximum threshold heater current to detect HO2 sensor heater circuit malfunction |
THERMOSTAT
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $08 | Thermostat | ECT sensor output | Multiply by 0.625 and minus 40 | °C | Malfunction threshold for thermostat |
02S TEST RESULT
| Test ID | Test Item | Description | Unit Conversion | Unit | Standard Value |
|---|---|---|---|---|---|
| $07 | Output Voltage | Minimum rear HO2 sensor output voltage | Multiply by 0.005 | V | Less than TEST LIMIT |
| $08 | Output Voltage | Maximum rear HO2 sensor output voltage | Multiply by 0.005 | V | More than TEST LIMIT |
| $91 | OSC | Maximum OSC in catalytic converter | Multiply by 0.0156 | g | Less than TEST LIMIT |
CATALYST
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $01 | TWC | OSC of TWC | Multiply by 0.0078125 | - | Malfunction threshold for TWC deterioration |
EVAP
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $02 | Reference orifice monitor | Fuel tank pressure change value during reference (0.02 inch leak) pressure measurement | Multiply by 0.0156 | kPa | Malfunction threshold |
EVAP
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $02 | Reference orifice monitor | Fuel tank pressure change value during reference (0.02 inch leak) pressure measurement | Multiply by 0.0156 | kPa | Malfunction threshold |
EVAP
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $02 | Purge flow monitor | Fuel tank pressure change during negative pressure introduction | Multiply by 0.0156 | kPa | Malfunction threshold |
| $02 | Purge VSV stuck open monitor | Fuel tank pressure change during EVAP system check | Multiply by 0.0156 | kPa | Malfunction threshold |
| $02 | Purge VSV stuck closed monitor | Fuel tank pressure change during EVAP system check | Multiply by 0.0156 | kPa | Malfunction threshold |
EVAP
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $02 | Vent valve stuck open monitor | Fuel tank pressure change after leak check | Multiply by 0.0156 | kPa | Malfunction threshold |
| $02 | Vent valve stuck closed monitor | Fuel tank pressure change after leak check | Multiply by 0.0156 | kPa | Malfunction threshold |
A/F SENSOR
| Test ID | Test Item | Test Value | Unit Conversion | Unit | Test Limit |
|---|---|---|---|---|---|
| $06 | Response rate | Response rate deterioration level for A/F sensor | Multiply by 0.000244 | N/A | Malfunction threshold for response rate deterioration level |
TEST ID: $02 MONITOR ITEMS AND TEST VALUES
| DTCs | Monitor Items | VAL (Test Value) | Unit | Conversion Factor |
|---|---|---|---|---|
| P043E | 0.02 inch Orifice Clog | [Pressure B] - [-4.3 kPa (-32.25 mmHg)] | kPa | 0.0156 |
| P043F | 0.02 inch Orifice High-flow | [Pressure B] - [-1.2 kPa (-9.0 mmHg)] | kPa | 0.0156 |
| P0441 | Purge VSV Stuck Open | [Pressure B x 0.2] - [Pressure C] | kPa | 0.0156 |
| P0441 | Purge VSV Stuck Close | [Pressure E] - [0.3 kPa (2.25 mmHg)] | kPa | 0.0156 |
| P0455 | Gross Leak | [Pressure B x 0.2] - [Pressure C] | kPa | 0.0156 |
| P0456 | Small Leak | [Pressure B] - [Pressure C] | kPa | 0.0156 |
| P2401 | Vacuum Pump Stuck OFF | [-1.2 kPa (-9.0 mmHg)] - [Pressure B] | kPa | 0.0156 |
| P2402 | Vacuum Pump Stuck ON | [-1.2 kPa (-9.0 mmHg)] - [Pressure A] | kPa | 0.0156 |
| P2419 | Vent Valve Stuck ON (Closed) | [Pressure D] - [0.3 kPa (2.25 mmHg)] | kPa | 0.0156 |
| P2420 | Vent Valve Stuck OFF (Vent) | [Pressure D] - [0.3 kPa (2.25 mmHg)] | kPa | 0.0156 |
PRESSURES DENOTATIONS
| Pressures | Denotations |
|---|---|
| A | EVAP system pressure Variation at 4 seconds after vacuum pump turned ON |
| B | 0.02 inch leak pressure created through 0.02 inch orifice |
| C | Saturated EVAP system pressure during leak check |
| D | EVAP system pressure variation in 10 seconds after vent valve turned ON (closed) |
| E | EVAP system pressure variation in 10 seconds while purge VSV ON (open) after leak check |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.