DI
−
52
−
DIAGNOSTICS
ENGINE
1996 LAND CRUISER (RM451U)
2
Check for heated oxygen sensor (bank 1 sensor 1) data.
PREPARATION:
(a)
Remove the fuse cover on the instrument panel.
(b)
Connect the OBD II scan tool or TOYOTA hand
−
held tester to the DLC3.
(c)
Warm up engine to normal operating temperature.
CHECK:
Read the heated oxygen sensor (bank 1 sensor 1) output voltage and short
−
term fuel trim.
RESULT:
Pattern
Heated oxygen sensor (bank 1 sensor 1) output voltage
Short
−
term fuel trim
1
Lean condition (Changes at 0.55 V or less)
Changes at about +20 %
2
Rich condition (Changes at 0.4 V or more)
Changes at about
−
20 %
3
Except 1 and 2
3
Check for heated oxygen sensor
(bank 1 sensor 1) (See page
SF
−
64
).
1, 2
3
Check fuel pressure (See page
SF
−
6
).
NG
Check and repair fuel pump, pressure
regulator, fuel pipe line and filter
(See page
SF
−
1
).
OK
4
Check injector injection (See page
SF
−
29
).
NG
Replace injector.
OK
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Brought to you by BirfMark
Version 1.00 - 12/21/2010
