2005 TOYOTA AVENSIS sensor

A54396
Wire Harness Side:+B (+)
A6
Front View
Mass Air Flow Meter Connector
A66053
Engine Room R/B No. 4:
EFI Relay
A76903
EVG
E13ECM Connector
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −59
AVENSIS Supplement (RM 1045E)
5 CHECK HARNESS AND CONNECTOR(MASS AIR FLOW METER − EFI RELAY)
(a) Inspect the EFI No. 2 fuse.
(1 ) Remove the EFI No. 2 fuse from the engine room
R/B No. 4.
(2) Check for continuity in the EFI No. 2 fuse.
Standard: Continuity
(3) Reinstall EFI No. 2 fuse.
(b) Remove the EFI relay from the engine room R/B No. 4.
(c) Disconnect the A6 mass air flow meter connector.
(d) Measure the resistance between the wire harness side connectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
+B (A6 −1 )− Engine room R/B No. 4 (EFI relay terminal 3)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
+B (A6 −1 ) or Engine room R/B No. 4 (EFI relay terminal 3) −
Body ground1 0k
or higher
(e) Reconnect the mass air flow meter connector.
(f) Reinstall the EFI relay.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK FOR ECM POWER SOURCE CIRCUIT (See Page 05 −236)
6 INSPECT ECM(SENSOR GROUND)
(a) Measure the resistance between the terminal of the E 13
ECM connector and body ground.
Standard:
Tester ConnectionSpecified Condition
EVG (E 13 − 29) −Body groundBelow 1

NG REPLACE ECM (See page 10 − 65 of Pub. No.
RM 1018E AVENSIS)
OK

− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−49
AVENSIS Supplement (RM1045E)
DTC P0031OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK1SENSOR1)
DTC P0032 OXYGEN SENSOR HEATER CONTROL
CIRCUIT HIGH (BANK1SENSOR1)
DTC P0037 OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK1SENSOR 2)
DTC P0038 OXYGEN SENSOR HEATER CONTROL
CIRCUIT HIGH (BANK1SENSOR 2)
DTC P0051OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK 2 SENSOR1)
DTC P0052 OXYGEN SENSOR HEATER CONTROL
CIRCUIT HIGH (BANK 2 SENSOR1)
DTC P0057 OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK 2 SENSOR 2)
DTC P0058 OXYGEN SENSOR HEATER CONTROL
CIRCUIT HIGH (BANK 2 SENSOR 2)
HINT:
SBank1refers to the No.1and No. 4 cylinders.
SBank 2 refers to the No. 2 and No. 3 cylinders.
SSensor1refers to the sensor closest to the engine assembly.
SSensor 2 refers to the sensor farthest away from the engine assembly.
05HI5−01

A72920
Reference (Bank1 Sensor 1 System Drawing)
Heated Oxygen Sensor
EFI Relay
Heater
SensorOX1A
HT
1A
Duty
Control
ECM
From
Battery EFI Fuse
E2
EFI No. 2
Fuse
MREL
OX HT
E 1
+B
05
−50
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
CIRCUIT DESCRIPTION
Refer to DTC P0 130 on page 05 −82.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current through the heater. The heated
oxygen sensor heater circuit uses a relay on the B+ side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P003 1
P0037
P005 1
P0057( 1 ) Heated current is 0.2 A or less when heater operates with
+B voltage between 10.5 V and 11 .5 V ( 1 trip detection logic)
(2) Heated current is 0.25 A or less when heater operates with
+B greater than 11 .5 V ( 1 trip detection logic)S Open in heater circuit of heated oxygen sensor
S Heated oxygen sensor heater
S EFI relay
S EFI No. 2 fuse
S ECM
P0032
P0038
P0052
P0058
When heater operates, heater current exceeds 2 A
(1 trip detection logic)
S Short in heater circuit of heated oxygen sensor
S Heated oxygen sensor heater
S EFI relay
S ECM
WIRING DIAGRAM
Refer to DTC P0 130 on page 05 −82.
INSPECTION PROCEDURE
HINT:
SIf different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
SRead freeze frame data using the hand−held tester . Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or
rich, and other data from the time the malfunction occurred.

A79112
E1OX B2S1 H9
+B
HT Heated Oxygen Sensor
Component Side:
Front View
A62378
+BHT
E1
1
2
3 4
OX
B1S1 H7
Heated Oxygen Sensor Component Side:
Front View B1S2 H8
B2S2H10
B16200
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−51
AVENSIS Supplement (RM1045E)
1INSPECT HEATED OXYGEN SENSOR(HEATER RESISTANCE)
(a) Disconnect the H7, H8, H9 or H10 heated oxygen sensor
connector.
(b) Measure the resistance between the terminals of the
heated oxygen sensor connector.
Standard (Bank 2 sensor1):
Tester ConnectionResistance
1(HT)−2 (+B)11to16
at 20_C (68_F)
1(HT)−4(E1)10k
or higher
Standard (Except Bank 2 sensor1):
Tester ConnectionResistance
1(HT)−2 (+B)11to16
at 20_C (68_F)
1(HT)−4(E1)10k
or higher
(c) Reconnect the heated oxygen sensor connector.
NG REPLACE HEATED OXYGEN SENSOR
OK
2 INSPECT EFI RELAY
(a) Remove the EFI relay from the engine room R/B No. 4.
(b) Check for continuity in the EFI relay.
Standard:
Tester ConnectionSpecified Condition
1−2Continuity
3−5No continuity
3−5Continuity
(Apply battery voltage to terminals1and 2)
(c) Reinstall the EFI relay.
NG REPLACE EFI RELAY
OK

A76903
HT1B (+)HT1A (+)
HT2A (+)
HT2B (+)
E03 (−)
ECM Connector E12
E11
05−52
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
3 INSPECT ECM(HT1A, HT1B, HT2A OR HT2B VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the applicable terminals of
the E11and E12 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
HT1A(E12−5)−E03 (E11 −7)9to14V
HT1B(E12−25)−E03 (E11 −7)9to14V
HT2A (E12−4)−E03 (E11 −7)9to14V
HT2B (E12−33)−E03 (E11 −7)9to14V
HINT:
SThe HT1A means the heated oxygen sensor bank1sen-
sor1.
SThe HT1B means the heated oxygen sensor bank1sen-
sor 2.
SThe HT2A means the heated oxygen sensor bank 2 sen-
sor1.
SThe HT2B means the heated oxygen sensor bank 2 sen-
sor 2.
OK REPLACE ECM (See page10−65 of Pub. No.
RM1018E AVENSIS)
NG

A66290
Wire Harness Side:
B1S1
B1S2
B2S1B2S2 H7
H9
H8
H10
Heated Oxygen Sensor Connector HT
HT
+B+B
Front View
A81695
HT1A
HT2BHT2A
HT1B
E12
ECM Connector
A66053
Engine Room R/B No. 4:
EFI Relay
A90210
Engine Room R/B No. 4:
EFI No.2 fuse
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−53
AVENSIS Supplement (RM1045E)
4 CHECK HARNESS AND CONNECTOR(HEATED OXYGEN SENSOR−ECM,
HEATED OXYGEN SENSOR−EFI RELAY)
(a) Check the harness and connector between the ECM and
heated oxygen sensor connectors.
(1) Disconnect the H7, H8, H9 or H10 heated oxygen
sensor connector.
(2) Disconnect the E12 ECM connector.
(3) Check the resistance between the wire harness
side connectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
HT (H7−1)−HT1A(E12−5)Below1

HT (H8−1)−HT1B(E12−25)Below1

HT (H9−1)−HT2A (E12−4)Below1

HT (H10−1)−HT2B (E12−33)Below1

Standard (Check for short):
Tester ConnectionSpecified Condition
HT (H7−1)or HT1A(E12−5)−Body ground10k
or higher
HT (H8−1)or HT1B(E12−25)−Body ground10k
or higher
HT (H9−1) or HT2A (E12−4)−Body ground10k
or higher
HT (H10−1) or HT2B (E12−33)−Body ground10k
or higher
(4) Reconnect the heated oxygen sensor connector.
(5) Reconnect the ECM connector.
(b) Check the harness and connector between the heated
oxygen sensor and EFI relay.
(1) Inspect the EFI No.2 fuse.
SRemove the EFI No.2 fuse from the engine
room R/B No. 4.
SCheck for continuity in the EFI No.2 fuse.
Standard: Continuity
SReinstall the EFI No. 2 fuse.
(2) Disconnect the H7, H8, H9 or H10 heated oxygen
sensor connector.
(3) Remove the EFI relay from the engine room R/B No.
4.
(4) Check the resistance between the wire harness
side connectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
+B (H7−2)−Engine room R/B No. 4 (EFI relay terminal 3)Below1

+B (H8−2)−Engine room R/B No. 4 (EFI relay terminal 3)Below1

+B (H9−2)−Engine room R/B No. 4 (EFI relay terminal 3)Below1

+B (H10−2)−Engine room R/B No. 4 (EFI relay terminal 3)Below1

05−54
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
Standard (Check for short):
Tester ConnectionSpecified Condition
+B (H7−2) or Engine room R/B No. 4 (EFI relay terminal 3)−
Body ground10k
or higher
+B (H8−2) or Engine room R/B No. 4 (EFI relay terminal 3)−
Body ground10k
or higher
+B (H9−2) or Engine room R/B No. 4 (EFI relay terminal 3)−
Body ground10k
or higher
+B (H10−2) or Engine room R/B No. 4 (EFI relay terminal 3)−
Body ground10k
or higher
(5) Reconnect the heated oxygen sensor connector.
(6) Reinstall the EFI relay.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ECM (See page10−65 of Pub. No. RM1018E AVENSIS)

05−48
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
DTC P00 16 CRANKSHAFT POSITION − CAMSHAFT
POSITION CORRELATION (BANK 1 SENSOR
A)
CIRCUIT DESCRIPTION
Refer to DTC P0335 on page 05 −1 60.
DTC No.DTC Detection ConditionTrouble Area
P00 16Deviation in crankshaft position sensor signal and camshaft
position sensor (bank 1) signal (2 trip detection logic)S Mechanical system
(Timing chain has jumped a tooth, chain stretched)
S ECM
WIRING DIAGRAM
Refer to DTC P0335 on page 05 −1 60.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand −held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
1 CHECK VALVE TIMING(CHECK FOR LOOSE AND A JUMPED TOOTH OF TIMING
CHAIN) (See page 14− 45)
NG ADJUST VALVE TIMING (See page 14− 45)
(REPAIR OR REPLACE TIMING CHAIN)
OK
REPLACE ECM (See page 10− 65 of Pub. No. RM 1018E AVENSIS)
05CE0 −02