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CLICK HERE TO VIEW CHAPTER INDEX
INSPECTION PROCEDURE
HINT:
Read freed frame data using hand--held tester. Because freeze frame records the engine conditions when
the malfunction is detected, when troubleshooting it is useful for determining whether the vehicle was run-
ning or stopped, the engine warmed up or not, the air--fuel ratio lean or rich, etc. at the time of the malfunction.
1
Check continuity between terminal KNK of engine ECU connector and body
ground.
KNK
0.5V/
Division
0V
0.5V/
Division
0V
FI6510
FI6511
NG
DIAGNOSTICS
E5 Connector
P24397
KNK signal waveform
5 m sec./Division
200 sec./Division
A00068
- -
ENGINE (2RZ- -FE, 3RZ- -FE)
PREPARATION:
(a)
Remove the glove compartment
(b)
Disconnect the E5 connector of engine ECU.
CHECK:
Measure resistance between terminal KNK of engine ECU con-
nector and body ground.
OK:
Resistance: 1 MΩ or higher
Reference: INSPECTION USING OSCILLOSCOPE
With the engine racing (4,000 rpm) measure between ter-
S
minal KNK of engine ECU and body ground.
HINT:
The correct waveform is as shown.
Spread the time on the horizontal axis, and confirm that
S
period of the wave is 151 µ sec.
(Normal mode vibration frequency of knock sensor:
6.6 kHz).
HINT:
If normal mode vibration frequency is not 6.6 kHz the sensor is
malfunctioning.
OK
Go to step 3 .
3RZ-F,3RZ-FE
Pages From Supplement
TO MODEL INDEX
(See page FI -- 61).
CONTINUED
DI- -135
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