Toyota Corolla (2004+). Manual - part 70

 

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Toyota Corolla (2004+). Manual - part 70

 

 

05-271
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
2
INSPECT PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH
Component Side:
(a) Inspect the park/neutral position switch. (A/T)
Park/Neutral Position Switch
(1)
Disconnect the A2 park/neutral position switch con-
A2
nector.
(2)
Check for continuity between each terminal shown
below when the shift lever is moved to each range.
Standard:
Shift Range
Terminal No.
Specified Condition
P
1 - 3, 6 - 9
Front View
A79133
R
2 - 3
N
3 - 5, 6 - 9
Continuity
D
3 - 7
2
3 - 4
L
3 - 8
(3)
Reconnect the park/neutral position switch connec-
tor.
(b) Inspect the clutch start switch. (M/T)
8.0
0.5 mm (0.315
0.020 in)
(1)
Disconnect the C8 clutch start switch connector.
C8
(2)
Check for continuity between terminals when the
switch ON and OFF.
2
Standard:
Switch Position
Between Terminals
Specified Condition
1
ON (pushed)
Continuity
1
- 2
ON
OFF
OFF (free)
No continuity
A82259
(3)
Reconnect the clutch start switch connector.
NG REPLACE PARK/NEUTRAL POSITION SWITCH
OR CLUTCH START SWITCH (GO TO NEXT
STEP 3 AFTER THE REPLACEMENT)
OK
3
INSPECT ECM
(a) Turn the ignition switch ON.
(b) Measure the voltage between the terminals of the E4
E4
ECM connector.
Standard:
Tester Connection
Specified Condition
STA (E4-9) - E1 (E4-7)
0 V
(c)
Measure the voltage between the terminals of the E4
E1(-)
STA(+)
ECM connector when the engine is cranked.
ECM Connector
A18294
Standard:
Tester Connection
Specified Condition
STA (E4-9) - E1 (E4-7)
5.5 V or more
OK SYSTEM OK
NG
05-272
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
4
INSPECT IGNITION OR STARTER SWITCH ASSY
(a) Disconnect the I10 ignition switch connector.
Component Side:
Ignition Switch
(b) Check for continuity between the connector terminals
shown in the chart below.
I10
Switch Position
Terminal No.
Specified Condition
LOCK
All Terminals
No continuity
ACC
1-3
Continuity
ON
1-2, 1-3, 2-3, 5-6
Continuity
START
1-2, 4-5, 4-6, 5-6
Continuity
Front View
B50489
(c)
Reconnect the ignition switch connector.
NG REPLACE IGNITION OR STARTER SWITCH
ASSY (GO TO NEXT STEP 5 AFTER THE RE-
PLACEMENT)
OK
5
INSPECT ECM
(a) Turn the ignition switch ON.
(b) Measure the voltage between the terminals of the E4
E4
ECM connector.
Standard:
Tester Connection
Specified Condition
STA (E4-9) - E1 (E4-7)
0 V
(c)
Measure the voltage between the terminals of the E4
E1(-)
STA(+)
ECM connector when the engine is cranked.
ECM Connector
A18294
Standard:
Tester Connection
Specified Condition
STA (E4-9) - E1 (E4-7)
5.5 V or more
OK SYSTEM OK
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
05-29
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
05DIH-01
READINESS MONITOR DRIVE PATTERN
1.
PURPOSE OF THE READINESS TESTS
F
The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emission-re-
lated components and report any detected abnormalities in the form of Diagnostic Trouble Codes
(DTCs). Since the various components need to be monitored during different driving conditions, the
OBD II system is designed to ran separate monitoring programs called Readiness Monitors. Many
state Inspection and Maintenance (I/M) programs require that vehicles complete their Readiness Mon-
itors prior to beginning an emissions test.
F
The current status of the Readiness Monitors can be seen by using the hand-held tester with version
9.0 software (or newer), or a generic OBD II scan tool.
F
To view the Readiness Monitor status using the hand-held tester, select ”Monitor Status” from the En-
hanced OBD II Menu.
F
A status of ”complete” indicates that the necessary conditions have been met to run the performance
tests for the related Readiness Monitor.
F
The Readiness Monitor will be reset to ”incomplete” if:
F
ECM has lost power (battery or fuse).
F
DTCs have been cleared.
F
The conditions for running the Readiness Monitor have not been met.
F
In the event that any Readiness Monitor shows ”incomplete,” follow the appropriate Readiness Monitor
Drive Pattern to change the readiness status to ”complete.”
CAUTION:
Strict observance of posted speed limits, traffic laws, and road conditions are required when per-
forming these drive patterns.
NOTICE:
These drive patterns represent the fastest method to satisfy all necessary conditions which allow
the specific readiness monitor to complete.
In the event that the drive pattern must be interrupted (possibly due to traffic conditions or other fac-
tors) the drive pattern can be resumed, and in most cases, the readiness monitor will still set to com-
plete.
To ensure rapid completion of readiness monitors, avoid sudden changes in vehicle load and speed
(driving up and down hills and/or sudden acceleration).
05-30
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
2.
CATALYST MONITOR (O2S TYPE)
40 to 55 mph
(64 to 88 km/h)
35 to 45 mph
(56 to 72 km/h)
Idling
Ignition OFF
Warmed up
3 minutes
7 minutes
A78883
(a) Preconditions
The monitor will not run unless:
F
MIL is OFF.
F
Engine Coolant Temperature (ECT) is 176°F (80°C) or greater.
F
Intake Air Temperature (IAT) is 14°F (-10°C) or greater.*
NOTICE:
* 2002 and later MY vehicles:
The readiness test can be completed in cold ambient conditions (less than 14
°F / -10°C), if the drive
pattern is repeated a second time after cycling the ignition off.
(b) Drive Pattern
(1)
Connect the OBD II scan tool to the DLC3 to check monitor status and preconditions.
(2)
Drive the vehicle at 40 to 55 mph (64 to 88 km/h) for approximately 3 minutes.
NOTICE:
Drive with smooth throttle operation and avoid sudden acceleration.
If IAT is less than 50
°F (10°C) when starting engine, continue to drive vehicle at 40 to 55 mph (64 to
88km/h) for approximately 4 minutes.
(3)
Drive the vehicle at 35 to 45 mph (56 to 72 km/h) for approximately 7 minutes.
NOTICE:
Drive with smooth throttle operation and avoid sudden deceleration as much as possible with the
throttle fully closed.
(4)
If readiness status dose not switch to complete, make sure that the preconditions are met and
the ignition switch is turned OFF and then repeat steps (2) and (3).
(5)
Release pressure in the fuel tank by removing and then reinstalling the fuel tank cap.
(6)
Start the engine and immediately begin driving as directed.
05-31
DIAGNOSTICS
-
SFI SYSTEM (April, 2003)
3.
EVAP MONITOR (VACUUM PRESSURE MONITOR)
NOTICE:
A cold soak must be performed prior to conducting the drive pattern to complete the Internal Pres-
sure Readiness Monitor.
(a) Cold Soak Preconditions
The monitor will not run unless:
F
MIL is OFF.
F
Fuel level is approximately 1/2 to 3/4.
F
Altitude is 7800 feet (2400 m) or less.
(b) Cold Soak Procedure
Let the vehicle cold soak for 8 hours or until the difference between IAT and ECT becomes less than
13°F (7°C).
HINT:
Examples:
F
Scenario 1
ECT = 75°F (24°C)
IAT = 60°F (16°C)
Difference between ECT and IAT is 15°F (8°C).
The monitor will not run because difference between ECT and IAT is greater than 13°F (7°C).
F
Scenario 2
ECT = 70°F (21°C)
IAT = 68°F (20°C)
Difference between ECT and IAT is 2°F (1°C).
The monitor will run because difference between ECT and IAT is less than 13°F (7°C).
05-32
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
4.
EVAP MONITOR (VACUUM PRESSURE MONITOR) (CONTINUED)
3,000 rpm
Idling
Ignition OFF
Soak
10 seconds
15 to 50 minutes
Warmed up
(When the readiness code or diagnostic code
is set, this test is completed.)
(a) Preconditions
The monitor will not run unless:
F
MIL is OFF.
F
Fuel level is approximately 1/2 to 3/4.
F
Altitude is 7800 feet (2400 m) or less.*
F
Engine Coolant Temperature (ECT) is between 40°F and 95°F (4.4°C and 35°C).
F
Intake Air Temperature (IAT) is between 40°F and 95 °F (4.4°C and 35°C).*
F
Cold Soak Procedure has been completed.
F
Before starting the engine, the difference between ECT and IAT must be less than 13°F (7°C).
HINT:
Examples:
F
Scenario 1
ECT = 75°F (24°C)
IAT = 60°F (16°C)
Difference between ECT and IAT is 15°F (8°C).
The monitor will not run because difference between ECT and IAT is greater than 13°F (7°C).
F
Scenario 2
ECT = 70°F (21°C)
IAT = 68°F (20°C)
Difference between ECT and IAT is 2°F (1°C).
The monitor will run because difference between ECT and IAT is less than 13°F (7°C).
NOTICE:
* NOTE for 2002 and later MY vehicles:
The readiness test can be completed in cold ambient conditions (less than 40
°F / 4.4°C) and/or at
high altitudes (more than 7800 feet / 2400 m) if the drive pattern is repeated a second time after cycl-
ing the ignition off.
05-33
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
(b) Drive Pattern
(1)
Connect the OBD II scan tool to DLC3 to check monitor status and preconditions.
(2)
Release pressure in the fuel tank by removing and then reinstalling the fuel tank cap.
(3)
Start the engine and allow it to idle until ECT becomes 167°F (75°C) or greater.
(4)
Run the engine at 3,000 rpm for about 10 seconds.
(5)
Allow the engine to idle with the A/C ON (to create slight load) for 15 to 50 minutes.
NOTICE:
If the vehicle is not equipped with A/C put a slight load on the engine by doing the following :
F
Securely set the parking brake.
F
Block the drive wheels with wheel chocks.
F
Allow the vehicle to idle in drive for 15 to 50 minutes.
5.
OXYGEN SENSOR MONITOR (FRONT AND REAR O2S SYSTEM)
Once
Twice
3 times
10 times
25 mph
(40 km/h)
(over 900 rpm)
Idling
Ignition OFF
Over 2 minutes
Over 40 seconds
40 seconds
40 seconds
Over 50 seconds
50 seconds
50 seconds
50 seconds
A78885
(a) Preconditions
The monitor will not run unless:
F
MIL is OFF
(b) Drive Pattern
(1)
Connect the OBD II scan tool to the DLC3 to check monitor status and preconditions.
(2)
Start the engine and allow it to idle for 2 minutes or more.
(3)
Drive the vehicle at 25 mph (40 km/h) or more for at least 50 seconds.
(4)
Stop the vehicle and allow the engine to idle for 40 seconds or more.
(5)
Perform steps (3) and (4) ten times.
(6)
If the readiness status dose not switch to complete, make sure that the preconditions are met
and the ignition switch is turned OFF and then repeat steps (1) through (5).
05-34
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
6.
OXYGEN / AF SENSOR HEATER MONITOR
25 mph
(40 km/h)
Idling
Ignition OFF
Over 500 seconds
Over 2 minutes
A78886
(a) Preconditions
The monitor will not run unless:
F
MIL is OFF
(b) Drive Pattern
(1)
Connect the OBD II scan tool to the DLC3 to check monitor status and preconditions.
(2)
Start the engine and allow it to idle for 9 minutes.
(3)
Drive the vehicle at 25 mph (40 km/h) or more for at least 2 minutes.
(4)
If the readiness status dose not switch to complete, make sure that the preconditions are met
and the ignition switch turned OFF and then repeat steps (2) and (3).
05-286
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
05CS0-02
STOP LIGHT SWITCH CIRCUIT
CIRCUIT DESCRIPTION
This signal is used to detect that the brakes have been applied. The STP signal voltage is the same as the
one supplied to the stop lights.
The STP signal is used mainly to control the fuel cut-off engine speed (The fuel cut-off engine speed is re-
duced slightly when the vehicle is braking.).
05-287
DIAGNOSTICS
-
SFI SYSTEM (April, 2003)
WIRING DIAGRAM
S9
Stop Light
RH J/B
ECM
Switch
13
11
19
R-W
3C
3C
E5
STP
2
1
G-W
G-W
G-W
IL
1
IC
14
Instrument
Panel J/B
STOP
5
IC
ID
7
Instrument
Panel J/B
IB
1
G-W
W
1C
1
J9
C
Junction
2
Engine
Connector
Room
ALT
J/B
J9
C
J8
B
J8
B
1
G-W
G-W
G-W
G-W
1A
1
2
(*1)
(*2)
2
1
1
B
R9
R11
High
High
Rear
Rear
Mounted
Mounted
Combination
Combination
Stop Light
Stop Light
FL
4
Light LH
4
Light RH
2
MAIN
W-B
2
W-B
W-B
(*1)
(*2)
W-B
A
A
W-B
A
J8
W-B
Battery
Junction
BI
BH
Connector
*1: Bulb Type
*2: LED Type
A84728
05-288
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
INSPECTION PROCEDURE
Hand-held tester:
1
CHECK OPERATION OF STOP LIGHT
(a) Check if the stop lights go on and off normally when the brake pedal is depressed and released.
NG REPAIR OR REPLACE STOP LIGHT SWITCH
ASSY
OK
2
INSPECT STOP LIGHT SWITCH ASSY
(a) Check the resistance between the terminals when the
S9
Free
Pushed in
switch is turned ON and OFF.
2
1
Standard:
Switch Position
Tester Connection
Specified Condition
ON (free)
Below 1 W
1- 2
OFF (pushed in)
10 kW or higher
NG REPLACE STOP LIGHT SWITCH ASSY
A72924
OK
3
READ VALUE OF HAND-HELD TESTER(STP SIGNAL)
(a) Turn the ignition switch ON.
Brake Pedal
Brake Pedal
(b) Select the item ”DIAGNOSIS / ENHANCED OBD II /
Depressed
Released
DATA LIST / ALL / STOP LIGHT SW” and read its value
displayed on the hand-held tester.
Standard:
Brake Pedal
Specified Condition
Depressed
STP Signal ON
Released
STP Signal OFF
A79134
OK CHECK FOR INTERMITTENT PROBLEMS
(See page 05-41)
NG
05-289
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
4
CHECK HARNESS AND CONNECTOR(STOP LIGHT SWITCH - ECM)
(a) Disconnect the S9 stop light switch connector.
Wire Harness Side:
(b) Disconnect the E5 ECM connector.
Stop Light Switch Connector
S9
(c)
Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester Connection
Specified Condition
Stop light switch (S9-1) - STP (E5-19)
Below 1 W
Front View
Standard (Check for short):
A56986
Tester Connection
Specified Condition
Stop light switch (S9-1) or STP (E5-19) - Body ground
10 kW or higher
(d) Reconnect the ECM connector.
(e) Reconnect the stop light switch connector.
E5
STP
ECM Connector
A65744
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ECM (See page 10-11)
OBD II scan tool (excluding hand-held tester):
1
CHECK OPERATION OF STOP LIGHT
(a) Check if the stop lights go on and off normally when the brake pedal is depressed and released.
NG REPAIR OR REPLACE STOP LIGHT SWITCH
CIRCUIT
OK
05-290
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
2
INSPECT STOP LIGHT SWITCH ASSY
(a) Check the resistance between terminals when the switch
Free
Pushed in
S9
ON and OFF.
2
1
Standard:
Switch Position
Tester Connection
Specified Condition
ON (free)
Below 1 W
1
- 2
OFF (pushed in)
10 kW or higher
A72924
NG REPLACE STOP LIGHT SWITCH ASSY
OK
3
INSPECT ECM(STP VOLTAGE)
(a) Turn the ignition switch ON.
(b) Measure the voltage between the terminals of the E4 and
Brake Pedal
Brake Pedal
Depressed
Released
E5 ECM connectors.
Standard:
Between Terminals
Brake Pedal position
Specified Condition
STP (E5-19)
Depressed
8 to 14 V
– E1 (E4-7)
Released
Below 1.5 V
E4
E5
E1 (-)
STP (+)
ECM Connector
A79135
OK CHECK FOR INTERMITTENT PROBLEMS
(See page 05-41)
NG
05-291
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
4
CHECK HARNESS AND CONNECTOR(STOP LIGHT SWITCH - ECM)
(a) Disconnect the S9 stop light switch connector.
Wire Harness Side:
(b) Disconnect the E5 ECM connector.
Stop Light Switch Connector
S9
(c)
Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Between Terminals
Specified Condition
Stop light switch (S9-1) - STP (E5-19)
Below 1 W
Front View
Standard (Check for short):
A56986
Between Terminals
Specified Condition
Stop light switch (S9-1) or STP (E5-19) - Body ground
10 kW or higher
(d) Reconnect the ECM connector.
(e) Reconnect the stop light switch connector.
E5
STP
ECM Connector
A65744
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ECM (See page 10-11)
05-42
DIAGNOSTICS
- SFI SYSTEM (April, 2003)
05287-11
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed in the diagnostic trouble code check and the problem still can
not be confirmed in the basic inspection, proceed to this problem symptoms tables and troubleshoot accord-
ing to the numbered order given below.
Symptom
Suspect Area
See page
1.
Starter and starter relay
19-1
Engine does not crank (Does not start)
2.
Neutral start switch circuit *
40-6
1.
ECM power source circuit
05-273
2.
Ignition coil (w/ Igniter) circuit
05-177
No initial combustion (Does not start)
3.
Fuel pump control circuit
05-278
4.
Injector
05-149
1.
Fuel pump control circuit
05-278
No complete combustion (Does not start)
2.
Ignition coil (w/ Igniter) circuit
05-177
3.
Injector
05-149
1.
Starter signal circuit
05-265
2.
ISC valve circuit
05-251
3.
Fuel pump control circuit
05-278
Engine cranks normally but difficult to start
4.
Ignition coil (w/ Igniter)
05-177
5.
Spark plug
18-2
6.
Compression
14-1
05-149
7.
Injector
1.
Starter signal circuit
05-265
2.
ISC valve circuit
05-251
3.
Fuel pump control circuit
05-278
Difficult to start with cold engine
4.
Injector
05-149
5.
Ignition coil (w/ Igniter)
05-177
6.
Spark plug
18-2
1.
Starter signal circuit
05-265
2.
ISC valve circuit
05-251
3.
Fuel pump control circuit
05-278
Difficult to start with hot engine
4.
Injector
05-149
5.
Ignition coil (w/ Igniter)
05-177
6.
Spark plug
18-2
Incorrect first idle (Poor idling)
1.
ISC valve circuit
05-251
1.
ISC valve circuit
05-251
High engine idle speed (Poor idling)
2.
ECM power source circuit
05-273
3.
Neutral start switch circuit *
40-6
1.
ISC valve circuit
05-251
2.
Neutral start switch circuit
*
40-6
Low engine idle speed (Poor idling)
3.
Fuel pump control circuit
05-278
4.
Injector
05-149
1.
ISC valve circuit
05-251
2.
Injector
05-149
Rough idling (Poor idling)
3.
Ignition coil (w/ Igniter) circuit
05-177
4.
Compression
14-1
5.
Fuel pump control circuit
05-278
1.
ISC valve circuit
05-251
Hunting (Poor idling)
2.
ECM power source circuit
05-273
3.
Fuel pump control circuit
05-278
1.
Injector
05-149
2.
Fuel pump control circuit
05-278
Hesitation/Poor acceleration (Poor drivability)
3.
Ignition coil (w/ Igniter) circuit
05-177
4.
A/T faulty *
05-374
1.
Ignition coil (w/ Igniter)
05-177
Muffler explosion, after fire (Poor drivability)
2.
Spark plug
18-2
3.
Injector
05-149

 

 

 

 

 

 

 

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