Toyota 4A-FE Repair Manual page 100

EFI SYSTEM - Diagnosis System
Fl-29
DIAGNOSTIC CODES (4A-FE) (Cont'd)
Code
Number of
See
blinks
System
Diagnosis Trouble area
No.
"CHECK ENGINE"
page
Vacuum Open or short circuit intake • Vacuum sensor circuit
Fl-44
31
_nruui_
Sensor manifold pressure signal • Vacuum sensor
Fl-58
Fl1394
Signal
(PIM).
• ECU
Throttle The "IDL" and "PSW" signals
• Throttle position sensor
-----1U1IlJ1JL
circuit Fl-41
41
Position are output simultaneously for
• Throttle position sensor Fl·-55
Sensor Signal several seconds.
• ECU
F11396
No "SPD" signal for 8 seconds
when engine speed is between
• Vehicle speed sensor
42
__IU1IUUUL
Vehicle Speed 2,600 rpm and 4,500 rpm
circuit
-
Sensor Signal
and coolant temp. is below • Vehicle speed sensor
80°C (1 76°F) except when
• ECU
Fl1397
racing the engine.
No "STA" signal to ECU until
• IG switch circuit
43
_llfll111Jlflll
Starter Signal
engine speed reaches BOO
• IG switch, main relay Fl-47
circuit Fl-61
rpm wiijl vehicle not moving.
• ECU
I
Fl1398
• A/C switch circuit
• A/C switch
• A/C amplifier
No "IDL" signal, "NSW"
•
Neutral start switch circuit
Switch
signal or "A/C" signal to ECU.
•
Neutral start switch Fl-49
51
_llnJlflJlJL
Condition
with the check terminals E1
•
Acce~rator
pedal and cable Fl-63
Signal
and TE 1 connected.
•
Throttle position sensor
• circuit
• Throttle position sensor
Fil
399
• ECU
DIAGNOSTIC CODES (4A-GE)
Code
Number of
I
See
No.
blinks System Diagnosis Trouble area
"CHECK ENGINE"
page
_____rumnrumn_ON
This appears when none
-
Normal
of the other codes are
-
-
OFF
identified.
Fl14.01
(w/o Air Flow Meter)
No "NE" or "G" signal to
ECU within 2 seconds after
engine has been cranked.
{w/ Air Flow Meter)
• Distributor circuit
12
_JLflfl_
PRM Signal
• No "NE" signal to ECU
• Distributor
IG-5
within 2 seconds after the
• Starter signa\ circuit
engine is cranked .
• ECU
• Ne "G" signal to ECU 4
times in succession when
engine speed is between
Fil 389
500 rpm and 4,000 rpm.