TOYOTA AVENSIS 2005 Service Repair Manual

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

A79114
Wire Harness Side:
Sensor 1
H7
Heated Oxygen Sensor Connector
+B
HT
Front View
A65745ECM Connector HT1AE12
A66053
EFI Relay
Engine Room R/B No. 4:
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–45
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
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 the heated oxygen sensor.
(1) Disconnect the H7 heated oxygen sensor connec-
tor.
(2) Disconnect the E12 ECM connector.
(3) Check the resistance.
Standard (Check for open):
Tester ConnectionSpecified Condition
HT (H7–1) – HT1A (E12–6)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
HT (H7–1) or HT1A (E12–6) – 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 H7 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 (H7–2) – EFI relay (3)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
+B (H7–2) 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)

05–42
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0016 CRANKSHAFT POSITION – CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR
A)
CIRCUIT DESCRIPTION
Refer to DTC P0335 and P0339 on page 05–136.
DTC No.DTC Detection ConditionTrouble Area
P0016Deviation in crankshaft position sensor signal and camshaft
position signal (2 trip detection logic)Mechanical system (Jumped tooth of timing chain or chain
stretched)
 ECM
WIRING DIAGRAM
Refer to DTC P0335 and P0339 on page 05–136.
INSPECTION PROCEDURE
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 h\
elp 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 CHECK VALVE TIMING(CHECK FOR LOOSENESS AND JUMPED TEETH ON
TIMING CHAIN) (See page 14–49 of Pub. No. RM1018E AVENSIS)
(a) Check for looseness or a jumped tooth of the timing chain.
OK: The matchmarks of the crankshaft pulley and camshaft pulley are alig\
ned.
NG ADJUST VALVE TIMING (See page 14–49 of Pub.No. RM1018E AVENSIS)
(REPAIR OR REPLACE TIMING CHAIN)
OK
REPLACE ECM (See page 10–65 of Pub. No. RM1018E AVENSIS)
05B57–07

054JD–22
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–27
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your readings due to\
factors such as the type
of instrument.
If a DTC is displayed during the DTC check in check mode, check the circui\
t for the DTC listed in the table
below. For details of each DTC, refer to the ’’See page’’ under the respective ’’DTC No.’’ in this chart.
DTC No.
(See Page)Detection ItemTrouble Area*1
MILMemory
P0010
( 05–34 )Camshaft Position ”A” Actuator
Circuit (Bank 1)Open or short in oil control valve circuit
 Oil control valve
 ECM

P0011
( 05–38 )Camshaft Position ”A” –Timing
Over–Advanced or System Per-
formance (Bank 1)Valve timing
 Oil control valve
 Camshaft timing gear assy
 ECM

P0012
( 05–38 )Camshaft Position ”A” –Timing
Over– Retarded (Bank 1)
Valve timing
 Oil control valve
 Camshaft timing gear assy
 ECM

P0016
( 05–42 )Crankshaft Position – Camshaft
Position Correlation (Bank 1
Sensor A)Mechanical system (Jumped tooth of timing chain or chain
stretched)
 ECM

P0031
( 05–43 )Oxygen Sensor Heater Control
Circuit Low (Bank 1 Sensor 1)
Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (Sensor 1)
 EFI relay
 ECM

P0032
( 05–43 )Oxygen Sensor Heater Control
Circuit High (Bank 1 Sensor 1)
Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (Sensor 1)
 EFI relay
 ECM

P0037
( 05–46 )Oxygen Sensor Heater Control
Circuit Low (Bank 1 Sensor 2)
Open in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (Sensor 2)
 EFI relay
 ECM

P0038
( 05–46 )Oxygen Sensor Heater Control
Circuit High (Bank 1 Sensor 2)
Short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (Sensor 2)
 EFI relay
 ECM

P0100
( 05–49 )Mass Air Flow Circuit Malfunc-
tionOpen or short in mass air flow meter circuit
 Mass air flow meter
 ECM

P0102
( 05–49 )Mass or Volume Air Flow Circuit
Low InputOpen in mass air flow meter circuit
 Mass air flow meter
 ECM

P0103
( 05–49 )Mass or Volume Air Flow Circuit
High InputShort in mass air flow meter circuit
 Mass air flow meter
 ECM

P0110
( 05–55 )Intake Air Temperature Circuit
Open or short in intake air temperature sensor circuit
 Intake air temperature sensor (built into mass air flow meter)
 ECM

P0112
( 05–55 )Intake Air Temperature Circuit
Low InputShort in intake air temperature sensor circuit
 Intake air temperature sensor (built into mass air flow meter)
 ECM

P0113
( 05–55 )Intake Air Temperature Circuit
High InputOpen in intake air temperature sensor circuit
 Intake air temperature sensor (built into mass air flow meter)
 ECM