Toyota Supra 1990 Manual page 202

FI-2:B
Code
No.
*1
34
*1
35
41
42
43
52
53
*5
71
51
EFI SYSTEM - Diagnosis System
DIAGNOSTIC CODES (Cont'd)
Number of
"CHECK" engine
System
blinks
~
Turbocharger
Pressure
FI2818
~ HAC Sensor
FI4549
Signal
Throttle
~
Position
Sensor Signal
FI1614
~
Vehicle Speed
Sensor Signal
FI1615
~
Starter Signal
FI1616
~
Knock Sensor
Signal
FI1618
~
Knock Control
FI1619
Signal in ECU
JUU1J1J1J1JU
EGR System
Malfunction
FI2622
Switch
~
Condition
Signal
F11617
* 17M-GTE
* 2 7M-GE (California vehicles)
*3 7M-GE
Diagnosis
*4
Turbocharger pressure is
abnormal.
Open or short circuit in HAC
sensor signal.
Open or short circuit in
throttle position sensor
signal (VTA).
No "SPD" signal to ECU for
8 seconds when engine speed
is between 2,500 rpm and
4,500 (7M-GE) or 4,000
(7M-GTE) rpm and coolant
temp. is below 80
D
C (176
D
F)
and neutral start switch is off.
No "ST A" signal to ECU until
engine speed reaches 800
rpm with vehicle not moving.
Open or short circuit in
knock sensor signal.
Knock control program
faulty.
•
EGR gas temp. below
predetermined level
during EGR operation.
•
Open circuit in EGR gas
temp. sensor signal
(THG).
No "IDL" signal, "NSW"
signal or "A/C" signal to
ECU, during diagnosis
check.
* 4 Abnormalities in the air flow meter may also be detected.
* 5 California vehicles
Trouble area
•
Turbocharger
•
Air flow meter
•
Intercooler system
•
ECU
•
ECU
•
Throttle position sensor
circuit
•
Throttle position sensor
•
ECU
•
Vehicle speed sensor
circuit
•
Vehicle speed sensor
•
ECU
•
Ignition switch circuit
•
Ignition switch
•
ECU
•
Knock sensor circuit
•
Knock sensor
•
ECU
•
ECU
•
EGR system (EGR valve,
EGR hose etc.)
•
EGR gas temp. sensor
circuit
•
EGR gas temp. sensor
•
VSV for EGR
•
VSV for EGR circuit
•
ECU
•
A/C switch circuit
•
A/C switch
•
A/C amplifier
•
Throttle position sensor
circuit
•
Throttle position sensor
•
ECU
See
page
-
-
FI-36,
55
-
FI-42,
62
-
-
FI-48,
69
-