Toyota T100 1996 Service Manual page 447

DTC P0300
DTC P0301
DTC P0302
DTC P0303
DTC P0304
DTC P0305
DTC P0306
CIRCUIT DESCRIPTION
Misfire: The ECM uses the crankshaft position sensor and camshaft position sensor to monitor changes in
the crankshaft rotation for each cylinder.
The ECM counts the number of times the engine speed change rate indicates that misfire has occur-
red.When the misfire rate equals or exceeds the count indicating that the engine condition has deteriorated,
the MIL lights up.
If the misfire rate is high enough and the driving conditions will cause catalyst overheating, the MIL blinks
when misfiring occurs.
DTC No.
Misfiring of random cylinders is detected during any
P0300
particular 200 or 1,000 revolutions
For any particular 200 revolutions for engine, misfiring is
P0301
detected which can cause catalyst overheating
P0302
(This causes MIL to blink)
P0303
P0304
For any particular 1,000 revolutions of engine, misfiring is de-
P0305
tected which causes a deterioration in emission
P0306
(2 trip detection logic)
*: Only for 2WD models with a load capacity of 0.5 ton and regular cab.
HINT:
When the 2 or more codes for a misfiring cylinder are recorded repeatedly but no Random Misfire code is
recorded, it indicates that the misfires were detected and recorded at different times.
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
Random/Multiple Cylinder Misfire Detected
Cylinder 1 Misfire Detected
Cylinder 2 Misfire Detected
Cylinder 3 Misfire Detected
Cylinder 4 Misfire Detected
Cylinder 5 Misfire Detected
Cylinder 6 Misfire Detected
DTC Detecting Condition
− ENGINE (5VZ−FE)
S Ignition system
S Injector
S Fuel line pressure
S EGR*
S Compression pressure
S Valve clearance not to specification
S Valve timing
S Mass air flow meter
S Engine coolant temp. sensor
Trouble Area
DI−183
DI0UT−01