P24663
1
2
3
4
(
−
)
(+)
P23505
G, NE signal waveforms
20 m sec/Division (Idling)
5V/DIV
G1
G2
NE
NE2
−
DIAGNOSTICS
ENGINE
DI
−
63
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1
Check resistance of crankshaft position sensor for NE signal.
PREPARATION:
Remove the distributor cap and disconnect distributor connec-
tor.
CHECK:
Measure resistance between terminals 1 and 4 of distributor
connector.
OK:
Resistance
Cold
185
−
275
Ω
Hot
240
−
325
Ω
”Cold” is from
−
10
°
C (14F
°
) to 50
°
C (122
°
F) of engine coolant
temperature sensor and ”Hot” is from 50
°
C (122
°
F) to 100
°
C
(212
°
F).
Reference: INSPECTION USING OSCILLOSCOPE
During cranking or idling, check between terminals G1, G2, NE,
NE2 and G
−
of ECM.
HINT:
The correct waveforms are as shown.
NG
Replace distributor housing assembly.
OK
2
Check for open and short in harness and connector between ECM and crank-
shaft position sensor for NE signal (See page
IN
−
28
).
NG
Repair or replace harness or connector.
OK
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Brought to you by BirfMark
Version 1.00 - 12/21/2010