injector TOYOTA AVENSIS 2005 Service Repair Manual

+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Case 1
Case 2
Case 3
Case 4
Output Voltage of Heated Oxygen
Sensor (sensor 1: front sensor)
Injection volume
Output voltage
Output Voltage of Heated Oxygen
Sensor (sensor 2: rear sensor)Main Suspect
Trouble Area
OK
+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
Sensor 1: front sensor
(Sensor 1, heater, sensor 1
circuit)
+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
+25 %
–12.5 %
Injection volume
Output voltage
NG
+25 %
–12.5 %
Injection volume
Output voltage
NG
+25 %
–12.5 %
Injection volume
Output voltage
NG
+25 %
–12.5 %
Injection volume
Output voltage
NGExtremely rich or lean actual
air–fuel ratio
(Injector, fuel pressure, gas
leakage in exhaust system,
etc.) OK
OK
OK
Almost no reaction

Sensor 2: rear sensor
(Sensor 2, heater, sensor 2
circuit)
Almost no reaction Almost no reactionAlmost no reaction
05–154
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
The following A/F Control procedure enables the technician to check and graph the voltage output of both
the heated oxygen sensors.
To display the graph, select the following menu items on the tester: View / Line Graph.

A78423
20V
/Division Injector Signal Waveform
20V
/Division
GND
100 msec./Division (Idling)(Magnification)
GND
1 msec./Division (Idling)
Injection Duration
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–119
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)DTC No.
DTC Detection ConditionTrouble Area
P0300Misfiring of random cylinders is detected
Open or short in engine wire harness
Connector connection
Vacuum hose connection
Ignition system
Injector
Fuel pressure
Mass air flow meter
Engine coolant temperature sensor
Compression pressure
Valve clearance
Valve timing
PCV hose connection
PCV hose
ECM
P0301
P0302
Misfiring of each cylinder is detected
Open or short in engine wire harness
Connector connection
Vacuum hose connection
Ignition system
Injector
Fuel pressure
Mass air flow meter
P0303
P0304Misfiring of each cylinder is detectedEngine coolant temperature sensor
Compression pressure
Valve clearance
Valve timing
PCV hose connection
PCV hose
ECM
HINT:
When the DTCs for misfiring cylinders are recorded repeatedly but no random misfire DTC is recorded, it
indicates that the misfires have been set and recorded at different times.
Reference: Inspection using the oscilloscope
With the engine idling, check the waveform between terminals #10 to #40 and E01 of the ECM connectors.
ItemContents
Terminal#10 to #40 – E01
Equipment Setting20V/Division, 100 or 1 ms/Division
ConditionIdling
HINT:
The correct waveform is as shown.

A76891
I13
Ignition Switch
4 6
B–R B–R
IE4 (LHD)
1
1 IP1
(RHD) DH
2
DL 16
Driver
Side J/B
IGN
B–R
1 AM2 IG2
1
2
2
1
1A1 1Engine
Room
R/B No.1
Engine
Room
J/B No.1
B–G
4A
1
4B1 Engine
Room
J/B No.4 B–R 2R–B 1
I5
Injector No.1
B–R
Y
W
B 1
#10
E13
2 #20
E13
#30
3
E13
4 #40
E13
7 E01
E13
E02
6
E13
W–B
W–B ECM
R–B R–B
R–B
R–B
R–B 21
I6
Injector No.2
21
I7
Injector No.3
21
I8
Injector No.4
EA18
4
13
25 IG2
Relay
B
W–B
B
EC EG
4
44 Engine
Room
R/B No.4
B–G
FL MAIN
Battery R–B
05–120
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
WIRING DIAGRAM
Refer to DTC P0351 on page 05–143 for the wiring diagram of the ignition system.

A81912
1.0 to 1.1 mm
(0.039 to 0.043 in.)
05–124
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
5 CHECK SPARK PLUG AND SPARK OF MISFIRING CYLINDER
(a) Remove the ignition coil assembly.
(b) Remove the spark plug.
(c) Check the spark plug type.
Recommended spark plug:
SupplierType
DENSOK16R–U11
(d) Check the spark plug electrode gap.
Standard: 1.0 to 1.1 mm (0.039 to 0.043 in.)
Maximum: 1.3 mm (0.047 in.)
NOTICE:
If adjusting the gap of a new spark plug, bend only the
ground electrode. Do not touch the tip. Never attempt to ad-
just the gap of a used plug.
(e) Check the electrode for carbon deposits.
(f) Perform a spark test.
CAUTION:
Completely disconnect each injector connector.
NOTICE:
Do not crank the engine for more than 5 to 10 seconds.
(1) Install the spark plug to the ignition coil, and connect
the ignition coil connector.
(2) Disconnect the injector connector.
(3) Ground the spark plug.
(4) Check if a spark occurs while the engine is being
cranked.
OK: A spark jumps across electrode gap.
(g) Reinstall the spark plug.
(h) Reinstall the ignition coil assembly.
OK Go to step 8
NG

– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–125
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
6 CHANGE NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER
(a) Change the spark plug with the normal spark plug.
(b) Perform a spark test.
CAUTION:
Completely disconnect each injector connector.
NOTICE:
Do not crank the engine for more than 5 to 10 seconds.
(1) Install the spark plug to the ignition coil, and connect the ignition coil connector.
(2) Disconnect the injector connector.
(3) Ground the spark plug.
(4) Check if a spark occurs while the engine is being cranked.
OK: A spark jumps across electrode gap.
OK REPLACE IGNITION COIL ASSY
NG

A18294ECM Connector E13
E01#10 #20 #30
#40
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–127
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
8 INSPECT ECM TERMINAL OF MISFIRING CYLINDER(#10, #20, #30 OR #40
VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the specified terminals of
the E13 ECM connector.
Standard:
Tester ConnectionSpecified Condition
#10 (E13–1) – E01 (E13–7)9 to 14 V
#20 (E13–2) – E01 (E13–7)9 to 14 V
#30 (E13–3) – E01 (E13–7)9 to 14 V
#40 (E13–4) – E01 (E13–7)9 to 14 V
OK Go to step 11
NG
9 INSPECT FUEL INJECTOR RESISTANCE OF MISFIRING CYLINDER
(See page 11–8 of Pub. No. RM1018E AVENSIS)
NG REPLACE FUEL INJECTOR ASSY
(See page 11–10 of Pub. No. RM1018E AVENSIS)
OK

A80458
E13
ECM Connector
E01
#40#30#20#10
A79064
IG2 Relay
Engine Room R/B No. 4:
1212
A61031
Wire Harness Side:
I5
I6 I7 I8
Injector Connector
05–128
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
10 CHECK HARNESS AND CONNECTOR OF MISFIRING CYLINDER(INJECTOR –
ECM, INJECTOR – IG2 RELAY)
(a) Check the harness and connectors between the injector
and ECM.
(1) Disconnect the I5, I6, I7 and/or I8 injector connec-
tor.
(2) Disconnect the E13 ECM connector.
(3) Check the resistance.
Standard (Check for open):
Tester ConnectionSpecified Condition
Injector (I5–1) – #10 (E13–1)Below 1 Ω
Injector (I6–1) – #20 (E13–2)Below 1 Ω
Injector (I7–1) – #30 (E13–3)Below 1 Ω
Injector (I8–1) – #40 (E13–4)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
Injector (I5–1) or #10 (E13–1) – Body ground10 kΩ or higher
Injector (I6–1) or #20 (E13–2) – Body ground10 kΩ or higher
Injector (I7–1) or #30 (E13–3) – Body ground10 kΩ or higher
Injector (I8–1) or #40 (E13–4) – Body ground10 kΩ or higher
(4) Reconnect the injector connector.
(5) Reconnect the ECM connector.
(b) Check the harness and connectors between the injector
and IG2 relay.
(1) Disconnect the I5, I6, I7 and/or I8 injector connec-
tor.
(2) Remove the IG2 relay from the engine room R/B
No. 4.
(3) Check the resistance.
Standard (Check for open):
Tester ConnectionSpecified Condition
Injector (I5–2) – Engine room R/B No. 4 (IG2 relay terminal 3)Below 1 Ω
Injector (I6–2) – Engine room R/B No. 4 (IG2 relay terminal 3)Below 1 Ω
Injector (I7–2) – Engine room R/B No. 4 (IG2 relay terminal 3)Below 1 Ω
Injector (I8–2) – Engine room R/B No. 4 (IG2 relay terminal 3)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
Injector (I5–2) or Engine room R/B No. 4 (IG2 relay terminal
3) – Body ground10 kΩ or higher
Injector (I6–2) or Engine room R/B No. 4 (IG2 relay terminal
3) – Body ground10 kΩ or higher
Injector (I7–2) or Engine room R/B No. 4 (IG2 relay terminal
3) – Body ground10 kΩ or higher
Injector (I8–2) or Engine room R/B No. 4 (IG2 relay terminal
3) – Body ground10 kΩ or higher
(4) Reconnect the injector connector.
(5) Reinstall the IG2 relay.

–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–129
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
11 INSPECT FUEL INJECTOR INJECTION AND INJECTION VOLUME OF MISFIRING CYLINDER (See page 11–8 of Pub. No. RM1018E AVENSIS)
NG REPLACE FUEL INJECTOR ASSY
(See page 11–10 of Pub. No. RM1018E AVENSIS)
OK
12 CHECK CYLINDER COMPRESSION PRESSURE OF MISFIRING CYLINDER (See page 14–1 of Pub. No. RM1018E AVENSIS)
NG REPAIR OR REPLACE
OK
13 CHECK VALVE CLEARANCE OF MISFIRING CYLINDER (See page 14–6 of Pub. No. RM1018E AVENSIS)
NG ADJUST VALVE CLEARANCE
(See page 14–6 of Pub. No. RM1018E AVENSIS)
OK
14 PROCEED TO STEP APPROPRIATE FOR NUMBER OF MISFIRING CYLINDERS(REFER TO RESULT OF STEP 4)
HINT:
If the result of step 4 is ”1 or 2 cylinders”, proceed to A.
If the result of step 4 is ” 3 cylinders or more”, proceed to B.
B CHECK FOR INTERMITTENT PROBLEMS (See page 05–9 )
A
15 CHECK VALVE TIMING(CHECK FOR LOOSENESS AND JUMPED TEETH ON TIMING CHAIN) (See page 14–49 of Pub. No. RM1018E AVENSIS)
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)
OK