DIAGNOSIS SYSTEM




FREEZE-FRAME DATA



Item No.
Data
Unit
AA
Air flow sensor
g/s
AB
TPS (main)
%
BA
Target EGR
%
BB
Barometric pressure sensor
kPa
BC
Relative TPS
%
BD
TPS (sub)
%
BE
APS (main)
%
BF
APS (sub)
%
C0
Fuel system status 1
CL (closed loop)*1
CL (open loop)*2
OL: DRV (open loop-drive condition)*3
OL: SYS (open loop-system failure)*4
OL: HO2S (closed loop-system failure)*5
C1
Fuel system status 2
CL (closed loop)*1
CL (open loop)*2
OL: DRV (open loop-drive condition)*3
OL: SYS (open loop-system failure)*4
OL: HO2S (closed loop-system failure)*5
C2
Calculation load value
%
C3
Engine coolant TEMP. sensor
°C
C4
Short term fuel trim 1
%
C5*6
Short term fuel trim 3
***
C6
Long term fuel trim 1
%
C7*6
Long term fuel trim 3
***
C8
Short term fuel trim 2
%
C9*6
Short term fuel trim 4
***
CA
Long term fuel trim 2
%
CB*6
Long term fuel trim 4
%
CC
Manifold absolute pressure sensor
kPa
CD
Crank angle sensor
r/min
CE
Vehicle speed
km/h
CF
Ignition advance
deg
D0
Intake air temperature sensor
°C
D1
Time since engine running*7
sec
D6
Purge control solenoid valve duty
%
D8
Power supply voltage
V
D9
Absolute load value
%
DA
Target equivalence ratio
-
DB
Intake air temperature sensor
°C
DC
Commanded throttle actuator control
%
note *1: Condition in which oxygen sensor signals are fed back to the engine-A/T-ECU for controlling fuel.
note *2: Condition in which fuel is controlled without oxygen sensor signals being fed back to the engine-A/T-ECU because the condition to shift to the closed loop is not met.
note *3: Condition of open loop due to acceleration and deceleration driving.
note *4: Condition of open loop due to system failure.
note *5: Condition of closed loop due to system failure.
note *6: Data items are displayed on M.U.T.-III display, but the 6 cylinders engine is not applicable and its data is displayed as "**".
note *7: Time between engine start and malfunction detection.

DIAGNOSIS CODE



Code No.
Diagnosis item
Engine Warning lamp
-
Engine-A/T-ECU
ON
P0102*1
Air air flow circuit low input
ON
P0103*1
Air air flow circuit high input
ON
P0107
Manifold absolute pressure circuit low input
ON
P0108
Manifold absolute pressure circuit high input
ON
P0112*1
Intake air temperature circuit low input
ON
P0113*1
Intake air temperature circuit high input
ON
P0117*1
Engine coolant temperature circuit low input
ON
P0118*1
Engine coolant temperature circuit high input
ON
P0122*1
Throttle position sensor (main) circuit low input
ON
P0123*1
Throttle position sensor (main) circuit high input
ON
P0125*1
Insufficient coolant temperature for closed loop fuel control
ON
P0130
Right bank oxygen sensor (front) circuit
ON
P0131
Right bank oxygen sensor (front) circuit low voltage
ON
P0132
Right bank oxygen sensor (front) circuit high voltage
ON
P0133
Right bank oxygen sensor (front) circuit slow response
ON
P0134*1
Right bank oxygen sensor (front) circuit no activity detected
ON
P0135
Right bank oxygen sensor (front) heater system
ON
P0136
Right bank oxygen sensor (rear) circuit
ON
P0137
Right bank oxygen sensor (rear) circuit low voltage
ON
P0138
Right bank oxygen sensor (rear) circuit high voltage
ON
P0141
Right bank oxygen sensor (rear) heater system
ON
P0150
Left bank oxygen sensor (front) circuit
ON
P0151
Left bank oxygen sensor (front) circuit low voltage
ON
P0152
Left bank oxygen sensor (front) circuit high voltage
ON
P0153
Left bank oxygen sensor (front) circuit slow response
ON
P0154*1
Left bank oxygen sensor (front) circuit no activity detected
ON
P0155
Left bank oxygen sensor (front) heater system
ON
P0156
Left bank oxygen sensor (rear) circuit
ON
P0157
Left bank oxygen sensor (rear) circuit low voltage
ON
P0158
Left bank oxygen sensor (rear) circuit high voltage
ON
P0161
Left bank oxygen sensor (rear) heater system
ON
P0171
Right bank abnormal fuel system (lean)
ON
P0172
Right bank abnormal fuel system (rich)
ON
P0174
Left bank abnormal fuel system (lean)
ON
P0175
Left bank abnormal fuel system (rich)
ON
P0201
No. 1 injector system
ON
P0202
No. 2 injector system
ON
P0203
No. 3 injector system
ON
P0204
No. 4 injector system
ON
P0205
No. 5 injector system
ON
P0206
No. 6 injector system
ON
P0222*1
Throttle position sensor (sub) circuit low input
ON
P0223*1
Throttle position sensor (sub) circuit high input
ON
P0300
Random/multiple cylinder misfire detected
ON
P0301
No. 1 cylinder misfire detected
ON
P0302
No. 2 cylinder misfire detected
ON
P0303
No. 3 cylinder misfire detected
ON
P0304
No. 4 cylinder misfire detected
ON
P0305
No. 5 cylinder misfire detected
ON
P0306
No. 6 cylinder misfire detected
ON
P0325
Detonation sensor system
-
P0335*1
Crank angle sensor system
ON
P0340*1
Camshaft position sensor system
ON
P0403
Exhaust gas recirculation valve system
ON
P0421
Warm up catalyst malfunction (right bank)
ON
P0431
Warm up catalyst malfunction (left bank)
ON
P0443
Purge control solenoid valve system
ON
P0500*1
Vehicle speed signal system
ON
P0513
Immobilizer malfunction
-
P0603*1
EEPROM system
ON
P0606*1
Engine-A/T-ECU main processor malfunction
ON
P0622
Alternator FR terminal system
ON
P0638*1
Throttle valve control servo circuit range/performance problem
ON
P0642*1
Throttle position sensor power supply
ON
P0657*1
Throttle valve control servo relay circuit malfunction
ON
P0660
Variable induction control solenoid valve system
-
P1021
Oil feeder control valve circuit
ON
P1513
Remote control engine starter system <Vehicles with remote control engine starter>
-
P1602*1
Communication malfunction (between engine-A/T-ECU main processor and system LSI)
ON
P1603*1
Battery back-up circuit malfunction
ON
P2100*1
Throttle valve control servo circuit (open)
ON
P2101*1
Throttle valve control servo magneto malfunction
ON
P2122*1
Accelerator pedal position sensor (main) circuit low input
ON
P2123*1
Accelerator pedal position sensor (main) circuit high input
ON
P2127*1
Accelerator pedal position sensor (sub) circuit low input
ON
P2128*1
Accelerator pedal position sensor (sub) circuit high input
ON
P2135*1
Throttle position sensor (main and sub) range/performance problem
ON
P2138*1
Accelerator pedal position sensor (main and sub) range/performance problem
ON
P2228*1
Barometric pressure circuit low input
ON
P2229*1
Barometric pressure circuit high input
ON
U1073
Bus off
-
U1102*3
ABS-ECU time-out
-
U1108*1*3
Combination meter time-out
ON
note When the first time a malfunction is detected, the engine-A/T-ECU does not store a fault code. However, if the same malfunction is again detected the next time the engine is operated, a fault code is stored. For systems or components marked with "*1" to be diagnosed, when the first time a malfunction is detected, a fault code is stored and the engine warning lamp is illuminated.
note The codes marked with a "*2" in the diagnosis code number column have the following two conditions for illuminating the engine warning lamp.

  • In case that the misfire causing the damaged catalyst is detected, the engine warning lamp is illuminated at the time.
  • In case that the misfire deteriorating the exhaust gas is detected, the engine warning lamp is illuminated when the same malfunction is redetected after the next engine start.
note *3: When the diagnosis codes relating to the CAN communication error are output, make sure of the vehicle equipment. When the vehicle is not equipped with the system the engine-ECU communicates to, the diagnosis code is always output. This is not abnormal.

DATA LIST FUNCTION



Item No.
Inspection item
Unit
1
Battery voltage
V
2
Crank angle signal
r/min
3
Target idle speed
r/min
4
Vehicle speed signal
km/h
5
Intake air temperature sensor
°C
6
Engine coolant temperature sensor
°C
8
Manifold absolute pressure sensor
kPa
10
Air flow sensor
mV
11
Accelerator pedal position sensor (main)
mV
12
Accelerator pedal position sensor (sub)
mV
13
Throttle position sensor (main)
mV
15
Throttle position sensor (sub)
mV
16
Ignition advance
°CA
17
Injector drive time
ms
31
EGR valve
Step
74
Stop lamp switch
ON/OFF
76
A/C switch
ON/OFF
77
A/C load signal
ON/OFF
79
Cranking signal (ignition switch-ST)
ON/OFF
83
Power steering
ON/OFF
84
Idling switch
ON/OFF
85
Ignition switch: IG
ON/OFF
87
Neutral switch
ON/OFF
93
A/C compressor relay
ON/OFF
95
Engine control relay
ON/OFF
96
Throttle valve control servo relay
ON/OFF
97
Fuel pump relay
ON/OFF
98
Oil feeder control valve
ON/OFF
AA
Air flow sensor
g/s
AB
Throttle position sensor (main)
%
AC
Right bank oxygen sensor (front)
V
AD
Right bank oxygen sensor (rear)
V
AE
Left bank oxygen sensor (front)
V
AF
Left bank oxygen sensor (rear)
V
BB
Barometric pressure sensor
kPa
BC
Throttle position sensor (relative value)
%
BD
Throttle position sensor (sub)
%
BE
Accelerator pedal position sensor (main)
%
BF
Accelerator pedal position sensor (sub)
%
101
Cooling fan
ON/OFF
103
Variable induction control solenoid valve
ON/OFF

ENGINE-A/T-ECU MONITOR ITEM



  • Items useful for grasping the engine control condition by the engine-A/T-ECU are provided in this monitor item section.
  • Values of these monitor items vary greatly depending on marginal difference of measurement conditions, difference of the environment, aged deterioration of vehicles and so on, and it is difficult to show the precise specification values. Therefore, check conditions, display range and movement of values are described.
Item No.
Inspection item
Unit
9
Engine load
%
14
Throttle position sensor (main) mid opening learning value
mV
19
Idle speed control learned value (A/C OFF)
Step
20
Idle speed control learned value (A/C ON)
Step
26
Long term fuel trim 1
%
27
Long term fuel trim 2
%
28
Short term fuel trim 1
%
29
Short term fuel trim 2
%
32
Knock retard
°CA
33
Leamed knock retard
%
49
Purge control solenoid valve duty
%
58
Commanded throttle actuator control
%
59
Electronic controlled throttle valve target value
V
72
Absolute load value
%
73
Calculated load value
%
BA
Target EGR
%
105
Fuel system status 1
OL/CL/CL-Drv/OL-SYS/ CL-HO2S
106
Fuel system status 2
OL/CL/CL-Drv/OL-SYS/ CL-HO2S

ACTUATOR TEST FUNCTION



Item No.
Inspection item
Unit
1
Injectors
Cut fuel to No. 1 injector
2
Cut fuel to No. 2 injector
3
Cut fuel to No. 3 injector
4
Cut fuel to No. 4 injector
5
Cut fuel to No. 5 injector
6
Cut fuel to No. 6 injector
9
Fuel pump
Drive fuel pump to circulate fuel
10
Purge control solenoid valve
Solenoid valve turns from OFF to ON
13
Cooling fan motor
Drive the fan motor
16
A/C compressor relay
The relay turns from OFF to ON
17
Oil feeder control valve
Oil feeder control valve turns from OFF to ON
21
Variable induction control solenoid valve
The solenoid valve turns from OFF to ON