Toyota Land Cruiser 1988 Repair Manual page 215

Fl-84
Terminals
IDL- E2
VTA- E2
VC- E2
VC- E22
VS- E22
THA- E2
THW- E2
G1-G8
NE-G8
ISC1, ISC2 _
+
B
JSC3, ISC4
ECU Terminals
.........
E01
No.
HT1 STJ T
ISC ISC
10 1
2
E02
No.
HT2 E1
TWS
ISC IS
C.
20
3
4
• California vehicles only
EFI SYSTEM -
Electronic Control System
2. INSPECT RESISTANCE OF ECU
CAUTION:
• Do not touch the ECU terminals.
• The tester probe should be inserted into the
wiring connector from the wiring side.
Check the resistance between each terminal of the wiring
connectors.
• Disconnect the connectors from the ECU.
• Measure the resistance at each terminal.
Resistance of ECU Wiring Connectors
Condition Resistance (0)
Throttle valve open
co
Throttle valve fully closed Less than 2,300
Throttle valve open 3,500 - 1 0,300
Throttle valve fully closed 300-6,300
-
4,250 - 8,250
-
200-400
Measuring plate fully closed 20-600
Measuring plate fully open 20-3,000
Intake air temperature 20"C (68"F)
2,000 - 3,000
Coolant temperature 80"C (176"F) 200-400
-
140-180
-
-
10-30
'--'
.1
....__,
G8 G1
NE
~HG
OX1
IGF IGT
M·
EGR SPO FPU rrHA VS vc
IG
THW
REL
BATT
~!W
VF1 VF2 VTA IDL E11 OX2 E2
E22
4WO STP
AIC
w
NSV
STA AI +B H-
B1
Fl0574