A CARB mandated signals

TOYOTA hand-held tester display

Measurement Item

Normal Condition*

OPEN: Air-fuel ratio feedback stopped

CLOSED: Air-fuel ratio feedback operating

Idling after warming up: CLOSED

Current intake air volume as a proportion of max. intake air volume

Racing without load (2,250rpm): 6.9 - 16.2 %

COOLANT TEMP.

Engine Coolant Temp. Sensor Value

After warming up: 80 - 95° C (176 - 203°F)

SHORT FT #1

Short-term Fuel Trim Bank 1

0 ± 20%

LONG FT #1

Long-term Fuel Trim Bank 1

0 ± 20%

ENGINE SPD

Engine Speed

Idling: 1,000 rpm

VEHICLE SPD

Vehicle Speed

Vehicle Stopped: 0 km/h (0 mph)

Ignition Timing of Cylinder No. 1

Idling: BTDC 7 - 15°

INTAKE AIR

Intake Air Temp. Sensor Value

Equivalent to Ambient Temp.

MAF/AFM

Air Flow Rate Through Mass Flow Meter

Idling: 1.11 - 4.38 gm/sec. Racing without load (2,250 rpm): 3.38 - 7.88 gm/sec.

THROTTLE POS

Voltage Output of Throttle Position Sensor Calculated as a percentage: 0 V ^ 0%, 5 V ^ 100%

Throttle Fully Closed: 0 - 5 % Throttle Fully Open: 90 - 100 %

O2S B1, S1

Voltage Output of Heated Oxygen Sensor Bank 1, Sensor 1

Idling: 0.1 - 0.9 V

O2FT B1, S1

Heated Oxygen Sensor Fuel Trim Bank 1, Sensor 1 (Same as SHORT FT #1)

0 ± 20 %

O2S B1, S2

Voltage Output of Heated Oxygen Sensor Bank 1, Sensor 2

Driving at 50 km/h (31 mph): 0.1 - 0.9 V

* : If no conditions are specifically stated for "ldling", it means the shift lever is at P position, the A/C switch is OFF and all accessory switches are OFF. (b) TOYOTA Enhanced Signals.

TOYOTA hand-held tester display

Measurement Item

Normal Condition*

MISFIRE RPM

Engine RPM for first misfire range

Misfire 0: 0 rpm

MISFIRE LOAD

Engine load for first misfire range

Misfire 0: 0 g/r

INJECTOR

Fuel injection time for cylinder No.1

Idling: 1.0 - 3.0 ms

CYL#1, CYL#2, CYL#3, CYL#4

Abnormal revolution variation for each cylinder

0 %

IGNITION

Total number of ignition for every 1,000 revolutions

0 - 2,000

FUEL PUMP

Fuel Pump Signal

Idling: ON

EVAP (PURGE) VSV

EVAP VSV Signal

VSV operating: ON

VAPOR PRESS VSV

Vapor Pressure VSV Signal

VSV operating: ON

TOTAL FT B1

Total Fuel Trim Bank 1: Average value for fuel trim system of bank 1

Idling: 0.8 - 1.2 V

O2 LR B1, S1 *

Heated Oxygen Sensor Lean Rich Bank 1, Sensor 1 Response time for oxygen sensor output to switch from lean to rich

Idling after warmed up: 0 - 1,000 msec.

O2 RL B1, S1 *

Heated Oxygen Sensor Rich Lean Bank 1, Sensor 1 Response time for oxygen sensor output to switch from rich to lean

Idling after warmed up: 0 - 1,000 msec.

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