Toyota COMPUTER-CONTROLLED SYSTEM User Manual

DIAGNOSIS
- Diagnostic Code s
ncrcnicrv%,c
Examples of diagnostic codes of OBD-II com- OBD-II system has a check mode function in
patible engines in vehicles sold in the U
.S .A . which detection of a problem has greater sen-
and Canada are show below
. In the same sitivity than the normal mode
.
manner as the conventional OBD system, th
e
• Camry 1 MZ-FE
engine (1994 model year )
COD E
NO
CIRCUITRY
"CHEC K
ENGINE"
DIAGNOSIS
TROUBLE AREA
MEMOR
Y
.
LAMP • ~
(MEANING OF TROBLE
CODE )
P0100
Mass
air flow circuit ON Open or short in mass air flow meter circuit with
• Open or short in mass air flow meter circui
t
malfunction engine speed 4,000 rpm or less
• Mass air flow meter
0
• EC U
Conditions a) and b) continue with engine spee
d
Mass air flow circuit 900 rpm or less :
P0101
range/performance ON (2 trip detection
logic) `3 • Mass air flow meter
0
problem
a) Closed throttle position switch
: O N
b) Mass air flow meter output > 2 .2 V
• Open or short in intake air temp . senso r
P0110
Intake air temp . circui t
lf i
ON Open or short in intake air temp . sensor
circuit
circuit O
ma unct
on
• Intake air temp . senso r
• EC U
• Open or short in engine coolant temp .
P0115
Engine coolant temp . ON Open or short in engine coolant
temp . sensor sensor circui t
circuit malfunction circuit
• Engine coolant temp . sensor
O
• EC U
Engine coolant temp .
20 min . or more after starting engine, engin
e
P0116 circuitrange/ ON
coolant temp
. sensor value is 30°C (86°F) of • Engine coolant temp . sensor
0
performance problem
less
• Coolant syste m
(2 trip detection logic)'
3
+ 1
* 2
*3
"ON" displayed in the diagnosis mode column indicates that the "CHECK ENGINE" warning light is
lighted up when a malfunction is detected
.
"0" in the
memory column indicates that a diagnostic code is recorded in the ECU memory when a
malfunction is detected
. Accordingly, output of diagnostic results in normal or test mode is perform-
ed with the ignition switch ON .
" 2 trip detection logic"
(
See page
134) .
140

Toyota COMPUTER-CONTROLLED SYSTEM Specifications

General

Brand	Toyota
Model	COMPUTER-CONTROLLED SYSTEM
Category	Automobile Accessories
Language	English