2005 TOYOTA AVENSIS Circuit

05±564
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
MONITOR STRATEGY
P0088:
Required sensorsFuel pressure sensor
Frequency of operationContinuous
Duration1 sec.
CHK ENG operation1 driving cycle
P1229:
Required sensorsFuel pressure sensor
Frequency of operationContinuous
Duration1 min.
CHK ENG operation1 driving cycle
TYPICAL ENABLING CONDITIONS
P0088:
Specification
The monitor will not run if the fuel pressure sensor, or suction control valve circuit, or pressure discharge valve is malfunctioning
P1229:
ItemSpecification
Target fuel pressure variation is small±
The monitor will not run if the fuel pressure sensor, or suction control valve circuit, or pressure discharge valve is malfunctioning
TYPICAL MALFUNCTION THRESHOLDS
P0088:
Detection CriteriaThreshold
Fuel pressure sensor200 MPa (2,039 kgf/cm2, 29,007 psi) or more
P1229:
Threshold
Internal fuel pressure of the common rail stays higher than the target fuel pressure, despite the ECM closing the suction control valve, and also
the pressure discharge valve is frequently operating

A81016
ECM
STA
E97
B±Y
IJW±BJ12
B B
J13
J/C W±B 1 5
32 1AM2 2
B
B±R1
S51
S4
Starter
Battery7IK1
FL MAIN 3 3
Engine Room
R/B No. 3
B B 55
55 1
11A
BB±R
IE41
(LHD)IP11
(RHD)B±R
Engine
Room
R/B No. 1
Driver
Side R/B ST
Relay
2
DJ
9
DADriver
Side J/B B±R
B±RI13
Ignition Switch
4
5
AM2 ST2B±Y
B±Y
6
2ST 1
6 Fuse
Block
B±WB±Y B±YB±Y
J12
A C
J13C
J13
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±691
AVENSIS REPAIR MANUAL (RM1018E)
STARTER SIGNAL CIRCUIT
CIRCUIT DESCRIPTION
HINT:
While the engine is being cranked, current flows from terminal ST2 of the ignition switch to the ST relay coil
and also current flows to terminal STA of the ECM (STA signal).
WIRING DIAGRAM
05B5Y±02

05±692
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
This chart is on the premise that the engine is cranked normally. If the engine is not cranked, proceed to the
problem symptoms table on page 05±551.
1READ VALUE OF HAND±HELD TESTER(STA SIGNAL)
(a)Connect the hand±held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / STARTER SIGº and read its value dis- played on the hand±held tester.
Standard:
Ignition Switch PositionONSTART
STARTER SIGOFFON
OKPROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05±551)
NG

A81504
Injector Cross Section DiagramPiston
Solenoid Valve
Nozzle Needle
05±658
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP1238INJECTOR MALFUNCTION
HINT:

For more information on the injector and the common rail system, see page 05±517.

If P1238 is present, use the diagnostic trouble code matrix for fuel sys\
tem, see page 05±517.
CIRCUIT DESCRIPTION
The ECM detects combustion deterioration for specific cylinder.
HINT:

The cylinder that has compensation learned value for INJ VOL varies from other cylinders may be mal-
functioning.

If DTC P0093 (Fuel leaks in high±pressure area) is present simultan\
eously, leakage malfunction of the
cylinder probably be occurred.

If DTC P0200 (Open or short in EDU or injector circuit) is present sim\
ultaneously, there probably be
faulty circuit located between the ECM and the injector including the ED\
U.

If only DTC P1238 (Injector malfunction) is present, probably the injector is \
mechanical malfunction
or insufficient compression (valve clearance, etc) has occurred, not an open o\
r short malfunction of
the ECM, EDU and injector circuit.

Solenoid valve of the injector is the same type of the pressure discharg\
e valve.
05CQ0±01

±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±659
AVENSIS REPAIR MANUAL (RM1018E)DTC No.
DTC Detection ConditionMain Trouble AreaRelated Trouble Area
P1238Engine speed variation is large when idling.


Injector

EDU (P0200is set simultaneous-
ly)

Open or short in engine wire
(P0200is set simultaneously)

Connector connection (P0200is
set simultaneously)

Compression pressure

Valve clearance

Valve timing

ECM
HINT:
After confirming DTC P1238, use the hand±held tester to confirm the fuel pressure inside the common rail
in the ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COMN RAIL PRESSº.
Engine SpeedFuel Pressure (MPa)
IdlingApprox. 30 to 40
Running the engine at 2,500 rpm (No engine load)Approx. 50 to 100
MONITOR DESCRIPTION
P1238 (Injection malfunction, exclude open or short in injector circuit):
This DTC will be set if the engine speed variations between each cylinder is\
large. The ECM monitors
changes in the crankshaft rotation speed using the crankshaft position sensor f\
or detecting poor combus-
tion. Also, it identifies faulty cylinder using the camshaft position sensor. The fluctuation counter increments
when irregular crankshaft rotation speed variation exceeds the threshold at i\
dling. Therefore, either one of
the cylindershas very poor combustion (Rough idle), the ECM sets this DTC.
MONITOR STRATEGY
Required sensorsCrankshaft position sensor
Frequency of operationContinuous
Duration10 min.
CHK ENG operation2 driving cycles
TYPICAL ENABLING CONDITIONS
ItemSpecificationItemMinimumMaximum
EngineAt idling
Engine speed500 rpm±
Engine coolant temperature20 C (68 F)
TYPICAL MALFUNCTION THRESHOLDS
Threshold
The number of irregular changes in the crankshaft rotation speed
HINT:
The number of irregular changes in the crankshaft rotation speed indicat\
es the insufficient combustion cylin-
der.
WIRING DIAGRAM
Refer to DTC P0200 on page 05±604.

05±598
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0168FUEL TEMPERATURE TOO HIGH
CIRCUIT DESCRIPTION
Refer to DTC P0180 on page 05±599.
DTC No.DTC Detection ConditionTrouble Area
P0168
When THF greater than 35 \fC (95 \fF) and less than 60 \fC
(140 \fF), and THF
±6.7 \fC (20 \fF), and when starting engine,
conditions (a) and (b) continue (1 trip detection logic):
(a)Vehicle speed is changing (Not stable)
(b)THF change is lower than 3 \fC (5.4 \fF) after the engine was
started.

Fuel temperature sensor
In case that reading value of fuel temp. sensor will not change
more than 1 \fC (1.8 \fF) even after repeating 6 trips (detection
logic) of adjusting speed pattern with THF more than 60 \fC
(140 \fF) after the engine was started.
INSPECTION PROCEDURE
HINT:

If DTCs ºP0180, P0182and P0183º are output simultaneously, fuel temperature sensor circuit may be
open or short. Perform the troubleshooting of DTC ºP0180, P0182 or P0183º\
first.

Read freeze frame data using \b
 . Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for d\
etermining whether the vehicle
was running or stopped, the engine was warmed up or not, etc. at the time o\
f the malfunction.
1CHECK OTHER DTC OUTPUT(BESIDES DTC P0168)
(a)Read the DTC using the hand±held tester. Result:
Display (DTC output)Proceed to
Only P0168 are outputA
P0168 and other DTCs are outputB
HINT:
If any other codes besides ºP0168º are output, perform the troublesh\
ooting for those DTCs first.
BGO TO RELEVANT DTC CHART(See page 05±544)
A
REPLACE FUEL TEMPERATURE SENSOR
05CPO±01

F45131
Skid Control ECU
with Actuator
A32
ABS Speed Sensor
Rear LH
A33
ABS Speed Sensor
Rear RH 23
RL+
S1
R
40RL±
S1
38
RR+
S1
39
RR±
S1
G
P
V
2 1
2 1 R
G
P
V P
V
2
IB1
1
IB1
10
11
10 1
IM1
IM1 IE2
IE2
05±778
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTCC0210/33RIGHT REAR SPEED SENSOR
DTCC0215/34LEFT REAR SPEED SENSOR
DTCC1332/38RIGHT REAR SPEED SENSOR CIRCUIT
DTCC1333/39LEFT REAR SPEED SENSOR CIRCUIT
CIRCUIT DESCRIPTION
Refer to DTC C0200/31, C0205/32, C1330/35, C1331/36 on page 05±774.
DTC No.DTC Detecting ConditionTrouble Area
C0210/33
C0215/34
When any of the following 1 to 3 is detected :
1. Vehicle speed is more than 40 km/h (25 mph), pulses are not input for 0.01 second.
2. After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), the wheel speed of
0 km/h (0 mph) is detected.
3. After the initial start or restart and when the vehicle speed has reached 18 km/h (11 mph), the front wheel
speed of 0 km/h (0 mph) is detected.

Right rear and left rear speed sensor

Speed sensor rotor
C1332/38
C1333/39Detecting abnormality in the resistance value of each speed
sensor.
Right rear and left rear speed sensor

Speed sensor circuit
HINT:
DTC No. C0210/33, C1332/38 are for the right rear speed sensor.
DTC No. C0215/34, C1333/39 are for the left rear speed sensor.
WIRING DIAGRAM
0577Z±02

W04200
Normal Signal Waveform
1 V / Division 2 m/s / Division GND
F10178OK
NG
05±780
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3CHECK HARNESS AND CONNECTOR(REAR SPEED SENSOR ± SKID CONTROL ECU)
(a)Check for an open or short circuit in harness and connector between each skid\
control sensor and the
skid control ECU (See page 01±32).
NGREPAIR OR REPLACE HARNESS ORCONNECTOR
OK
4INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS
(REFERENCE) INSPECTION USING OSCILLOSCOPE
(a)Connect the oscilloscope to the terminals RR+ ± RR± and RL+ ± RL± of the skid control ECU.
(b)Drive the vehicle at about 30 km/h (19 mph), and check the signal waveform.
HINT:

As the vehicle speed (wheel revolution speed) increases,
a cycle of the waveform becomes shorter and the fluctua-
tion in the output voltage becomes greater.

When noise is identified in the waveform on the oscillo-
scope, error signals are generated due to the speed sen-
sor rotor's scratches, looseness or foreign matter depos-
ited on it.
OKREPLACE ABS & TRACTION ACTUATOR ASSY (See page 32±57)
NG
5INSPECT SKID CONTROL SENSOR INSTALLATION
(a)Check the sensor installation. OK:
There is no clearance between the sensor and rear
axle carrier.
NGREPLACE SKID CONTROL SENSOR
NOTICE:
Check the speed sensor signal last (See page 05±756).
OK