2005 TOYOTA AVENSIS heater

05−286
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
Symbols (Terminals No.)
STD Voltage (V)
Condition
Terminal Description
Wiring Color
STA (E9 −7) − E1 (E 12− 7)B −Y − BRStarter signalCranking6.0 or more
#1 (E 13− 24) − E1 (E 12− 7)
#2 (E 13− 23) − E1 (E 12− 7)
#3 (E 13− 22) − E1 (E 12− 7)
#4 (E 13− 21) − E1 (E 12− 7)G −W − BR
W −R − BR
R −W − BR
W −L − BR
InjectorIdlingPulse generation
(See page 05 −368)
G+ (E 12− 23) −G− (E 12− 31)P −LCamshaft position sensorIdlingPulse generation
(See page 05 −384)
NE+ (E 13− 27) −NE −(E 13− 34)G −RCrankshaft position sen-
sorIdlingPulse generation
(See page 05 −38 1)
STP(E 10 15)E 1(E 12 7)G WBRStopla ps itch
Ignition switch ON, Brake pedal de-
pressed7.5 to 14
STP (E 10−1 5)−E1 (E 12− 7)G −W− BRStop lamp switchIgnition switch ON, Brake pedal re-
leased0to 1.5
ST 1(E10 14)E 1(E 12 7)G WBRStoplampswitchBrake pedal depressed0to 1.5ST 1− (E10−1 4)−E1 (E 12− 7)G −W− BRStoplampswitch
(opposite to STP)Brake pedal released7.5 to 14
TC (E9 −11)− E1 (E 12− 7)W −L −BRTerminal TC of DLC 3Ignition switch ON9to 14
W(E9 12)E 1(E 12 7)WBRCheck engine warningCHK ENG illuminated0to3W (E9 −12)−E1 (E 12− 7)W −BRCheckenginewarning
light (CHK ENG)CHK ENG not illuminated9to 14
SPD (E 10−1 7)−E1 (E 12− 7)V −W −BRSpeed signal from com-
bination meterIgnition switch ON, Rotate driving
wheel slowlyPulse generation
(See page 05 −408)
SIL (E9 −18)−E1 (E 12− 7)W −G −BRTerminal SIL of DLC3Connect the hand −held tester to the
DLC3Pulse generation
Applied negative pressure of 40 kPa
(300 mmHg, 11.8 in.Hg)1.4 to 2.0
PIM (E 12− 28) −E2 (E 13− 28)W −R −BRTurbo pressure sensorSame as atmospheric pressure2.0 to 2.6PIM(E 12 28)E2(E13 28)W RBRTurbopressuresensor
Applied positive pressure of 69 kPa
(518 mmHg, 20.4 in.Hg)3.0 to 3.6
IREL(E9 10)E 1(E 12 7)YBREDUrelayIgnition switch OFF9to 14IREL (E9 −10)−E1 (E 12− 7)Y− BREDU relayIdling0to 1.5
TACH (E9 −4) −E1 (E 12− 7)GR −R −BREngine speedIdlingPulse generation
VCS (E 12− 2) −E2S (E 12−1 )R−W −BRCommon rail pressure
sensorIgnition switch ON4.5 to 5.5
PCR 1(E 13− 26) −E2 (E 13− 28)P −BRCommon rail pressure
sensor (main)Idling1.8 to 2. 1
PCR2 (E 13− 33) −E2 (E 13− 28)P −B −BRCommon rail pressure
sensor (sub)Idling1.2 to 1.5
GREL(E9 15)E 1(E 12 7)RBRGlowplugrelayCranking9to 14GREL(E9 −15)−E1 (E 12− 7)R −BRGlowplug relayIdling0to 1.5
THF (E 13− 29) −E2 (E 13− 28)L −BRFuel temperature sensorIgnition switch ON0.5 to 3.4
ALT (E 13− 8) −E1 (E 12− 7)B −L − BRGenerator (Alternator)
duty signalIdlingPulse generation
PCV+ (E 13− 2) −PCV −(E 13−1 )LG −R −LGSuction control valveIdlingPulse generation
(See page 05 −429)
PRD (E 13− 32) −E1 (E 12− 7)R −L − BRPressure relief valve drive
signalIgnition switch OFF4 to 6.5
INJF (E 13− 25) −E1 (E 12− 7)R −B −BREDUIdlingPulse generation
(See page 05 −368)
VN (E 13−1 0)−E1 (E 12− 7)W −BRVRV (for VN turbochar-
ger)Ignition switch ONPulse generation
(See page 05 −312)
AF2+ (E 10− 35) −E1 (E 12− 7)B −BRA/FsensorIgnitionswitchON3.0 to 3.6
AF2 −(E 10− 34) −E1 (E 12− 7)W −BRA/F sensorIgnition switch ON2.7 to 3.3
HAF2 (E 12− 5) −E1 (E 12− 7)L− R −BRA/F sensor heater duty
signalIdlingPulse generation
FIV (E 13− 3) −E1 (E 12− 7)L− R −BRExhaust fuel addition in-
jectorEngine warmed up, Idling, Every 1
to 2 minutesPulse generation
(See page 05 −470)

05I7Z−01
A91210
Engine Control System Diagram:
Accelerator Pedal
Position Sensor
Ignition Switch Signal
Starter Signal
Vehicle Speed Signal
DLC3Supply Pump
Pressure Discharge Valve Fuel Pressure Sensor
EDU Relay
EDU
Atmospheric
Temperature
Sensor
Glow
Plug Relay
Crankshaft Position SensorCamshaft
Position
SensorCommon Rail Suction Control Valve
Alternator Duty SignalDCAT Switch
ECM
Atmospheric
Pressure
Sensor
A/F Sensor Heater
Mass Air Flow Meter
Differential
Pressure Sensor
A/F Sensor Actuator
E−VRV
Exhaust Gas Temperature Sensor
(Up Stream)
Exhaust Gas Temperature Sensor
(Down Stream)Glow Plug EGR Valve
Injector
Turbo Pressure
Sensor
Engine Coolant
Temperature Sensor
Intake Air
Temperature
Sensor
Fuel Temperature Sensor
EGR Cooler Inter Cooler
Exhaust Fuel
Addition
Injector
DPNR Catalytic Converter
Turbocharger
(INJT and PRD Signal)
(INJF Signal)
Intake Shutter
(Throttle Valve)
Oxidation Catalytic
Converter
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−255
AVENSIS Supplement (RM1045E)
SYSTEM DESCRIPTION
1. ENGINE CONTROL SYSTEM

DTC No.
( ): Potential DTCs
( F )
ABCDE F G HI JKL MNOPQ RS T
P003 1 (See page 05 −305)
P0544 (See page 05 −415)
P0545 (See page 05 −415)
P0546 (See page 05 −415)
P 1386 (See page 05 −444)
P 1425 (See page 05 −457)
P 1426 (See page 05 −462)
P 1427 (See page 05 −457)
P 1428 (See page 05 −457)
P2002 (See page 05 −466)
P203 1 (See page 05 −415)
P2032 (See page 05 −415)
P2033 (See page 05 −415)
P2047 (See page 05 −470)
P2238 (See page 05 −484)
P2239 (See page 05 −484)
F
F
F F
F
F FF
FF F F FFF
FF
F
F
F
F FF
F
F
F
F F F
F
F
F
FFF
F (
F )(F)
( F )
(F )(F )(F ) (
F )(F )
( F )
F
F
F F
F
F
(F )(
F )
( F )
( F )(
F )
F F F
F
( F )
( F )(F)( F)
05
−258
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
(c) DIAGNOSTICS TROUBLE CODES (DTCS) TABLE FOR TOYOTA D −CAT:
HINT:
This table indicates typical DTC combinations for each malfunction occurrence.
Trouble AreaMalfunctionRefer to
DPNR catalytic converterDeteriorated or cloggedA
Stuck openB
Stuck closeC
Eha stfeladditioi jectoLow fuel addition volumeDExhaust fuel addition injectorOpen in exhaust fuel addition injector circuitE
Short in exhaust fuel addition injector circuitF
Open or short in exhaust fuel addition injectorG
Open in exhaust gas temperature sensor circuitH
Exhaust gas temperature sensorShort in exhaust gas temperature sensor circuitIExhaustgastemperaturesensor
Exhaust gas temperature sensorJ
Open in differential pressure sensor circuitK
Short in differential pressure sensor circuitL
DifferentialpressuresensorDifferential pressure sensorMDifferential pressure sensorDifferential pressure sensor cloggedN
Incorrect vacuum hose arrangement of the differ-
ential pressure sensorO
A/Fse soOpen or short in A/F sensor or heater circuitPA/F sensorA/F sensorQ
Exhaust gas leaksExhaust gas leaksR
Fuel leaksFuel leaks in fuel addition injectorS
Supply pumpCorrect fuel pressure cannot be fed to the ex-
haust fuel addition injectorT

− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−259
AVENSIS Supplement (RM1045E)
(d)DIAGNOSTICS TROUBLE CODE DESCRIPTION FOR TOYOTA D−CAT:
DTC No.Description
P0031Open or short in A/F sensor or heater circuit (Low output)
P0544Open or short in exhaust gas temperature sensor circuit (Up stream)
P0545Open or short in exhaust gas temperature sensor circuit (Up stream) (Low output)
P0546Open or short in exhaust gas temperature sensor circuit (Up stream) (High output)
P1386TOYOTA D−CAT fuel addition system malfunction
P1425Open or short in differential pressure sensor circuit
P1426Differential pressure sensor is clogged or has incorrect vacuum hose arrangement
P1427Open or short in differential pressure sensor circuit (Low output)
P1428Open or short in differential pressure sensor circuit (High output)
P2002DPNR Catalytic converter malfunction
P2031Open or short in exhaust gas temperature sensor circuit (Down stream)
P2032Open or short in exhaust gas temperature sensor circuit (Down stream) (Low output)
P2033Open or short in exhaust gas temperature sensor circuit (Down stream) (High output)
P2047Open in exhaust fuel addition injector circuit
P2238Open or short in A/F sensor or heater circuit (Low output)
P2239Open or short in A/F sensor or heater circuit (High output)

05−484
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
DTC P2237 OXYGEN (A/F) SENSOR PUMPING
CURRENT CIRCUIT/OPEN (FOR A/F
SENSOR)(BANK1 SENSOR 1)
DTC P2238 OXYGEN (A/F)SENSOR PUMPING CURRENT CIRCUIT LOW (FOR A/F SENSOR)(BANK 1
SENSOR 1)
DTC P2239 OXYGEN (A/F) SENSOR PUMPING CURRENT CIRCUIT HIGH (FOR A/F
SENSOR)(BANK1 SENSOR 1)
HINT:
S For more information on the A/F sensor and TOYOTA D −CAT (* 1) system, see page 05 −255.
S If P2237, P2238 and/or P2239 is present, refer to the diagnostic trouble codes (DTCs) table for TOYO-
TA D −CAT system on page 05 −255.
S These DTCs are recorded when A/F sensor has malfunction, although the caption is the oxygen sen-
sor.
* 1 : Diesel Clean Advanced Technology.
CIRCUIT DESCRIPTION
Refer to DTC P003 1 on page 05 −305.
DTC No.DTC Detecting ConditionTrouble Area
P2237ECM internal error ( 10 seconds)
( 1 trip detection logic)S ECM
P2238
S A/F sensor circuit low (bank 1 sensor 1)
AF+ is less than 04 V for 50 seconds or more
Main trouble area: Open in A/F sensor circuit
S Open or short in A/F sensor circuit
S A/F sensor
S A/F sensor heaterP2238AF+ is less than 0.4 V for 5.0 seconds or more
( 1 trip detection logic)S A/F sensor heater
S A/F sensor heater relay
S A/F sensor heater and relay circuit
S ECM
P2239
S A/F sensor circuit high (bank 1 sensor 1)
AF+ is more than 44 V for 50 seconds or more
Main trouble area: Short in A/F sensor circuit
S Open or short in A/F sensor circuit
S A/F sensor
S A/F sensor heaterP2239AF+ is more than 4.4 V for 5.0 seconds or more
( 1 trip detection logic)S A/F sensor heater
S A/F sensor heater relay
S A/F sensor heater and relay circuit
S ECM
MONITOR DESCRIPTION
The A/F sensor has a characteristic that it varies its voltage output in proportion to the air −fuel ratio. If imped-
ance (alternating current resistance) or voltage output of the sensor extraordinarily deviates from the stan-
dard range, the ECM interprets this as an open or short malfunction of the A/F sensor circuit.
WIRING DIAGRAM
Refer to DTC P003 1 on page 05 −305.
05I7U −01

B16200
05−486
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
3 INSPECT AIR FUEL RATIO SENSOR HEATER RELAY
(a) Remove the A/F sensor heater relay.
(b) Check for continuity in the A/F sensor heater relay.
Standard:
Tester ConnectionSpecified Condition
1−2Continuity
No continuity
3−5Continuity
(Apply battery voltage to terminals1and 2)
(c) Reinstall the A/F sensor heater relay.
NG REPLACE AIR FUEL RATIO SENSOR HEATER
RELAY
OK

A90355
+B HTA34
Front View A/F Sensor ConnectorAF+ AF− Wire Harness Side
(w/ Headlight Beam Level Control):
A90355
Wire Harness Side
(w/o Headlight Beam Level Control):
A34
Front View A/F Sensor Connector
+BHTAF+ AF−
A85351
E10
ECM
Connector
HAF2E12AF2−
AF2+
B62793
A/F Sensor A/F Sensor
Heater Relay
Heater
Sensor
AF2+ HAF2
Duty
Control ECM
From
Battery
A/F Fuse
AF2−
MREL Reference:
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−487
AVENSIS Supplement (RM1045E)
4 CHECK HARNESS AND CONNECTOR(A/F SENSOR−ECM)
(a) Disconnect the A34 A/F sensor connector.
(b) Disconnect the E10 and E12 ECM connectors.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open)
(w/ Headlight beam level control):
Tester ConnectionSpecified Condition
AF+ (A34−3)−AF2+ (E10−35)
AF−(A34−4)−AF2−(E10−34)Below1

HT (A34−1)−HAF2 (E12−5)
Standard (Check for open)
(w/o Headlight beam level control):
Tester ConnectionSpecified Condition
AF+ (A34−4)−AF2+ (E10−35)
AF−(A34−3)−AF2−(E10−34)Below1

HT (A34−2)−HAF2 (E12−5)
Standard (Check for short)
(w/ Headlight beam level control):
Tester ConnectionSpecified Condition
AF+ (A34−3) or AF2+ (E10−35)−Body ground
AF−(A34−4) or AF2−(E10−34)−Body ground10k
or higher
HT (A34−1) or HAF2 (E12−5)−Body ground
g
Standard (Check for short)
(w/o Headlight beam level control):
Tester ConnectionSpecified Condition
AF+ (A34−4) or AF2+ (E10−35)−Body ground
AF−(A34−3) or AF2−(E10−34)−Body ground10k
or higher
HT (A34−2) or HAF2 (E12−5)−Body ground
g
(d) Reconnect the A/F sensor connector.
(e) Reconnect the ECM connectors.

A81017
Generator (Alternator)Glow Plug ECMGlow
Plug
Relay Battery
Duty Ratio
A81018
Ignition Switch
Glow Plug
Engine Speed
Starting EngineAfter Glow Time OFFOFF ON ON
OFF After Glow System:
0
020
(68)40
(104)
After Glow Time (second)Engine Coolant Temperature_C(_F) 120 05−386
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0380 GLOW PLUG/HEATER CIRCUIT ”A”
CIRCUIT DESCRIPTION
The glow plug is mounted inside the engine combustion chamber. To ensure the efficient engine starting with
a cold engine, the ECM calculates a time interval of the current needs to flow through the glow plug depend-
ing on the starting engine coolant temperature when the ignition switch is turned to ON. The ECM then turns
on the glow plug relay and permits the current to flow through the glow plug based on the ECM’s calculated
time. The glow plug is then heated and enhances fuel combustion with a cold engine.
This DTC will be set if there is open in glow plug itself or its circuit.
HINT:
After the engine is started, the ECM performs an ”after−glow” for a certain period of time. In proportion to
the actual engine coolant temperature, the time period varies. The after−grow reduces diesel engine knock-
ing, white smoke and engine noises with a cold engine.
05CPT−03