2005 TOYOTA AVENSIS diagnostic

A58686
Vehicle Speed48 km/h
(30 mph)
Ignition Switch OFF 40 seconds
or more
Engine coolant temperature is more than 75
C (167 F)
20 seconds
or more 40 seconds
or more
40 seconds
or more
(g) (h)
Idling (e) (g)
(h) (g)
(h)
20 seconds
or more 20 seconds
or more
Once
Twice
At least 8 times
2 minutes
or more
(a), (b) and (c)
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–115
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
14 PERFORM CONFIRMATION DRIVING PATTERN
(a) Connect the intelligent tester II to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Switch the ECM from normal mode to check mode using the intelligent test\
er ll ( see page 05–20).
(d) Start the engine.
(e) Allow the engine to idle for 2 minutes.
(f) Warm up the engine until the engine coolant temperature reaches more than\
75 C (167 F).
(g) Drive the vehicle at 48 km/h (30 mph) or more for 40 seconds or more.
(h) Stop the vehicle and allow the engine to idle for 20 seconds or more.
(i) Repeat the steps (g) and (h) at least 8 times in one driving cycle.
HINT:
If a malfunction exists, the MIL will be illuminated during step (i).
NOTICE:
If the conditions in this test are not strictly followed, no malfunction\
will be detected. If you do not
have the intelligent tester II, turn the ignition switch to OFF after perfor\
ming steps from (d) to (i), then
perform steps (d) to (i) again.
GO

05–116
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
15 CHECK IF DTC OUTPUT RECURS(DTC P0171 AND/OR P0172)
(a) Connect the intelligent tester II to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Select the following menu items: Powertrain / Engine and ECT / DTC.
(d) Read DTCs. Result:
Display (DTC Output)Proceed To
No outputA
P0171 and/or P0172B
B REPLACE ECM AND PERFORM CONFIRMA- TION DRIVING PATTERN
(Refer to step 14)
A
16 CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST
NO CHECK FOR INTERMITTENT PROBLEMS (See page 05–9 )
YES
DTCS ARE CAUSED BY RUNNING OUT OF FUEL (DTCS P0171 AND/OR P0172)
17 PERFORM CONFIRMATION DRIVING PATTERN
HINT:
Clear all DTCs prior to performing the confirmation driving pattern (re\
fer to step 14). GO
18 CHECK IF DTC OUTPUT RECURS(DTC P0171 AND/OR P0172)
(a) Connect the intelligent tester II to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Select the following menu items: Powertrain / Engine and ECT / DTC.
(d) Read DTCs. Result:
Display (DTC Output)Proceed To
P0171 and/or P0172A
No outputB
B Go to step 22
A

–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–117
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
19 REPLACE HEATED OXYGEN SENSOR
GO
20 PERFORM CONFIRMATION DRIVING PATTERN
HINT:
Clear all DTCs prior to performing the confirmation driving pattern (refer t\
o step 14).
GO
21 CHECK IF DTC OUTPUT RECURS(DTC P0171 AND/OR P0172)
(a) Connect the intelligent tester II to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Select the following menu items: Powertrain / Engine and ECT / DTC.
(d) Read DTCs. Result:
Display (DTC Output)Proceed To
No outputA
P0171 and/or P0172B
B REPLACE ECM AND PERFORM CONFIRMA- TION DRIVING PATTERN
(Refer to step 14)
A
22 CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST
NO CHECK FOR INTERMITTENT PROBLEMS
( See page 05–9 )
YES
DTCS ARE CAUSED BY RUNNING OUT OF FUEL (DTCS P0171 AND/OR P0172)

A78602
Reference (Sensor 2 System Diagram):Heated Oxygen Sensor
EFI Relay
Heater
Sensor OX1B
HT1BECM
From
Battery EFI Fuse
E2MREL
OX
HT
E1
+B
05–46
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0037 OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2)
DTC P0038 OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 2)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05–74.
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
P0037Heated current is 0.25 A or less when heater operates
(1 trip detection logic)
 Open in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 2)
 EFI relay
 ECM
P0038Heater current exceeds 2 A when heater operates
(1 trip detection logic)
Short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 2)
 EFI relay
 ECM
HINT:
Sensor 1 refers to the sensor mounted in front of the Three–Way Catalytic Converter (TWC) and lo-
cated near the engine assembly.
Sensor 2 refers to the sensor mounted behind the TWC and located far fro\
m the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05–74.
05KNW–02

A93651
+B HT
E1 OX Component Side:
Front View
Heated Oxygen Sensor Connector
+B HT
E1 OX
w/ HID w/o HID
Sensor 2
B16200
A18294
HT1B (+)
E03 (–)
E12
E9
ECM Connector
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–47
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, 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 INSPECT HEATED OXYGEN SENSOR(HEATER RESISTANCE)
(a) Disconnect the H17 heated oxygen sensor connector.
(b) Measure the resistance between the terminals of the
heated oxygen sensor connector.
Standard:
Tester ConnectionSpecified Condition
With HID: 1 (HT) – 2 (+B)11 to 16 Ω at 20C (68F)
With HID: 1 (HT) – 4 (E1)No Continuity
Without HID: 2 (HT) – 1 (+B)11 to 16 Ω at 20C (68F)
Without HID: 2 (HT) – 3 (E1)No Continuity
(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 the EFI relay resistance.
Standard:
Tester ConnectionSpecified Condition
3 – 510 kΩ or higher
3 – 5Below 1 Ω
(Apply battery voltage to terminals 1 and 2)
(c) Reinstall the EFI relay.
NG REPLACE EFI RELAY
OK
3 INSPECT ECM(HT1B VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the applicable terminals of
the E9 and E12 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
HT1B (E9–7) – E03 (E12–7)9 to 14 V

A93650
+B HT
E1 OX Wire Harness Side:
Front View Heated Oxygen Sensor Connector
+B HT
E1 OX
w/ HID w/o HID E17
A65748A55007
HT1BE9
ECM Connector
A66053
EFI Relay
Engine Room R/B No. 4:
05–48
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
OK REPLACE ECM (See page 10–65 of Pub. No.
RM1018E AVENSIS)
NG
4 CHECK HARNESS AND CONNECTOR(HEATED OXYGEN SENSOR – ECM,
HEATED OXYGEN SENSOR – EFI RELAY)
(a) Check the harness and the connectors between the ECM
and heated oxygen sensor.
(1) Disconnect the H17 heated oxygen sensor connec-
tor.
(2) Disconnect the E9 ECM connector.
(3) Check the resistance.
Standard (Check for open):
Tester ConnectionSpecified Condition
With HID: HT (H17–1) – HT1B (E9–7)Below 1 Ω
Without HID: HT (H17–2) – HT1B (E9–7)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
With HID: HT (H17–1) or HT1B (E9–7) – Body ground10 kΩ or higher
Without HID: HT (H17–2) or HT1B (E9–7) – Body ground10 kΩ or higher
(4) Reconnect the heated oxygen sensor connector.
(5) Reconnect the ECM connector.
(b) Check the harness and the connectors between the
heated oxygen sensor and EFI relay.
(1) Disconnect the H17 heated oxygen sensor connec-
tor.
(2) Remove the EFI relay from the engine room R/B No.
4.
(3) Check the resistance.
Standard (Check for open):
Tester ConnectionSpecified Condition
+B (H17–1) – EFI relay (3)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
+B (H17–1) or EFI relay (3) – Body ground10 kΩ or higher
(4) Reconnect the heated oxygen sensor connector.
(5) Reinstall the EFI relay.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ECM (See page 10–65 of Pub. No. RM1018E AVENSIS)

A78602
EFI RelayHeater
Sensor OX1A
HT1AECM
From
Battery EFI Fuse
E2
MREL
Reference (Sensor 1 System Diagram):
Heated Oxygen Sensor
OX
HT
E1
+B
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–43
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0031 OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK 1 SENSOR 1)
DTC P0032 OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05–74.
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
P0031Heated current is 0.8 A or less when heater operates
(1 trip detection logic)
 Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 1)
 EFI relay
 ECM
P0032Heated current exceeds 10 A when the heater operates
(1 trip detection logic)
Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 1)
 EFI relay
 ECM
HINT:
Sensor 1 refers to the sensor mounted in front of the Three–Way Catalytic Converter (TWC) and lo-
cated near the engine assembly.
Sensor 2 refers to the sensor mounted behind the TWC and located far fro\
m the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05–74.
05KNV–02

A93649
HT
+B
E1
OX Sensor 1Heated Oxygen Sensor Connector Component Side:
Front View
B16200
A18294
OX1A (+) E12
ECM Connector
HT1A (+)
E13
E2 (–)
E03
05–44
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, 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 INSPECT HEATED OXYGEN SENSOR(HEATER RESISTANCE)
(a) Disconnect the H7 heated oxygen sensor connector.
(b) Measure the resistance between the terminals of the
heated oxygen sensor connector.
Standard (Sensor 1):
Tester ConnectionSpecified Condition
1 (HT) – 2 (+B)5 to 10 Ω at 20C (68F)
1 (HT) – 4 (E1)10 kΩ 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.
(b) Check the EFI relay resistance.
Standard:
Tester ConnectionSpecified Condition
3 – 510 kΩ or higher
3 – 5Below 1 Ω
(Apply battery voltage to terminals 1 and 2)
(c) Reinstall the EFI relay.
NG REPLACE EFI RELAY
OK
3 INSPECT ECM(HT1A VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the applicable terminals of
the E12 and E13 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
HT1A (E12–6) – E03 (E12–7)9 to 14 V
OX1A (E12–22) – E2 (E13–28)9 to 14 V
OK REPLACE ECM (See page 10–65 of Pub. No.
RM1018E AVENSIS)
NG