1999 TOYOTA CAMRY fuel pump

M.I.L. ªONº P0440, P0441 & P0446 ± EG013-02July 12, 2002
Page 2 of 5
Test VSV Operation Using ACTIVE TEST on the Toyota Diagnostic Tester
1. Test operation of the Vapor Pressure Sensor VSV using the Toyota Diagnostic Tester
in ACTIVE TEST (see screen flow in Figure 1).
INJECTOR 0.0ms
IGN ADVANCE 5.0deg
CALC LOAD 0%
MAF 0gm/s
ENGINE SPD 0rpm
COOLANT TEMP 77.0F
INTAKE AIR 87.8F
THROTTLE POS 16%
CTP SW ON
VEHICLE SPD 0MPH
02S B1 S1 0.00V
2: CUSTOMIZE
3: ECU REPROGRAMFUNCTION SELECT FOR
NORTH AMERICA
B
*APPLICATION SELECT*
A
1: DIAGNOSISDIAGNOSTIC MENU
ENGINE
C
PRESS INJ VOL
A/F CONTROL
FUEL PMP SP CTL
A/C CUT SIG
CAN CTRL VSV
EVAP VSV (ALONE)
FUEL PUMP/SPD
LINE PRESS UPSELECT DATA
E
SELECT DATA
D
TANK BYPASS VSVUSER DATA
[ENTER]
F
G
TANK BYPASS VSV OFF
1: OBD/MOBD
3: CARB OBD II
4: BREAK±OUT BOX
5: NVH
6: AUTOPROBE
7: 02 RPM CHECK
8: SNAPSHOT REVIEW
9: SETUP
0: GAS ANALYSIS2: ENHANCED OBD1: DATA LIST
2: DTC INFO
4: SNAPSHOT
5: SYSTEM CHECK
6: RESET MEMORY
7: MONITOR STATUS
8: CHECK MODE
3: ACTIVE TEST
ALL
INJECTOR 0.0ms
IGN ADVANCE 5.0deg
CALC LOAD 0%
MAF 0gm/s
ENGINE SPD 0rpm
COOLANT TEMP 77.0F
INTAKE AIR 87.8F
THROTTLE POS 16%
CTP SW ON
VEHICLE SPD 0MPH
02S B1 S1 0.00V Figure 1: Testing Operation of Vapor Pressure Sensor VSV using ACTIVE TEST
TANK BYPASS VSV ON
NOTE:
Vapor Pressure Sensor VSV is listed as TANK BYPASS VSV on the Diagnostic Tester. Inspection &
Repair
Procedure

WARRANTY PARTS MARKING PROCEDURE ± PG006-03September 26, 2003
Page 3 of 3
NOTE:
The following parts do not have to be marked unless the technician can determine
failure and location.
air induction/ejection systems fuel injection systems
all computers fuel injectors
alternators fuel pump
audio (internal) ignition system
batteries internal engine components
bearings internal transmission components
belts oil cooler
catalytic converter power door lock switches
crankshaft remanufactured parts
cruise control starters
distributors suspension components
EGR systems valve covers
engine control systems window regulators
exchange parts wiper motors
exhaust systems
Parts
Marking
List
(Continued)

G ELECTRICAL WIRING ROUTING
Position of Parts in Body
A 25 ABS Speed Sensor Rear LH
A 26 ABS Speed Sensor Rear RH
A 27 Auto Antenna Motor and Relay
B 6 Buckle SW LH
C 16 Condenser
D 12 Door Courtesy SW Front LH
D 13 Door Courtesy SW Front RH
D 14 Door Courtesy SW Rear LH
D 15 Door Courtesy SW Rear RH
D 16 Door Key Lock and Unlock SW Front LH
D 17 Door Key Lock and Unlock SW Front RH
D 18 Door Lock Control SW RH
D 19 Door Lock Motor and Door Unlock Detection SW Front LH
D 20 Door Lock Motor and Door Unlock Detection SW Front RH
D 21 Door Lock Motor and Door Unlock Detection SW Rear LH
D 22 Door Lock Motor and Door Unlock Detection SW Rear RHF 10 Front Door Speaker LH
F 11 Front Door Speaker RH
F 12 Front Tweeter (Speaker) LH
F 13 Front Tweeter (Speaker) RH
F 14 Fuel Pump and Sender
H 10 High Mounted Stop Light
I 19 Interior Light
J 38 Junction Connector
J 39 Junction Connector
J 40 Junction Connector
L 1 License Plate Light LH
L 2 License Plate Light RH
L 3 Light Failure Sensor
L 4 Luggage Compartment Key Unlock SW
L 5 Luggage Compartment Light
L 6 Luggage Compartment Light SW

ENGINE CONTROL (1MZ±FE)
76
8 AM2 IG2
ST2
30A
AM2
5A IGN
1K 5
2L 41W 7 1K 311
1B 5
2A 11C 811
EB1 5
II3 12EB1 4
ID1 7
1 2
1 2
1 2
1 2
1 2
1 25 4 23 15
C 1
A 1
BL AAAAAAA
AG± R
G
R±L
W
Y
R
L B±R B(
*1)
B±R
B±RB±W W± R B B±GW±R
L±B L±B L±B W±BG±RB±R B±R
B±R B±R B±R B±R B±R B±R
G R±LWY RL
G±R
1J 3
1K 4
R
IGNITION SW
CIR OPN RELAY
JUNCTION CONNECTOR
JUNCTION
CONNECTORFUEL
PUMP I16
J18
F1 4
J40
INJECTOR NO. 1
INJECTOR NO. 2
INJECTOR NO. 3
INJECTOR NO. 4
INJECTOR NO. 5
INJECTOR NO. 6 I 8
I 9
I10
I11
I12
I13FUSIBLE LINK
BLOCKC F 4 F 6A
FL MAIN
3. 0W
BATTERY
5A STARTER
B±R
,
32 5125A
A/F
HTR FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
1
2 2 2
W±BA/F HTR RELA Y
ES11B±W
B
B
B±W B±W
B A
A C
A C
J35
JUNCTION
CONNECTORB A,
L
B±W
B±W B±W W±B
2R
B±R
J3 6
(
*1)(
*1)
(
*1)
(
*1) (
*1)
1
2IK17
I 1 B±R
B±R B±RB±R
(
*1)
W±B
M

ENGINE CONTROL (5S±FE)
11
11 23 15
CIR OPN
RELAY 5A
IGN
30A
AM2 1K 5
2L 41K 31W7
1C 8 1B 5
2A 1
BL ID1 7EB1 4 EB1 5 II3 12
1 2
1 2
1 2
1 2 C 1
A 176
8 AM2 IG2
ST2
B B B B
5 4 B
G± R
B±W(
*1)
B±R(
*1)
W
Y B±R B±RR
B±R
R
L±B L±B L±B W±B W±BG± RB±R B±R B±RW± R W±R B B±G
B±R B±R B±R B±R
WY RL
IGNITION SW
JUNCTION
CONNE CTOR
FUEL
PUMP
INJE CTOR NO. 1
INJE CTOR NO. 2
INJE CTOR NO. 3
INJE CTOR NO. 4
I16
J21
F1 4
I 8
I 9
I10
I11
BATTERY FL MA IN
3. 0W
JUNCTION
CONNECTOR J40 A
G± R
B±RR
L
B±R
B±W
(
*1)
II4 6
B±W
(
*1)B±W
(
*1)
B±R
(
*1)(
*2)
(
*2)
F 4
FUSIBLE
LINK BLOCKC A, F 6IK1 7I 1
I 3B±R
B±R
B±R B±R B±R
(
*2)
(
*2)
(
*1)
(
*1)
M

2. CONTROL SYSTEM
*SFI system
The SFI system monitors the engine condition through the signals, which are input from each sensor (Input signals from
(1) to (14) etc.) to the engine control module. The best fuel injection volume is decided based on this data and the
program memorized by the engine control module, and the control signal is output to TERMINALS #10, #20, #30 and
#40 of the engine control module to operate the injector. (Inject the fuel). The SFI system produces control of fuel
injection operation by the engine control module in response to the driving conditions.
*ESA system
The ESA system monitors the engine condition through the signals, which are input to the engine control module from
each sensor (Input signals from (1), (2), (4) to (12) etc.) the best ignition timing is detected according to this data and the
memorized data in the engine control module, and the control signal is output to TERMINALS IGT1 and IGT2. This
signal controls the igniter to provide the best ignition timing for the driving conditions.
*Idle Air Control system
The IAC system (Step motor type) increases the RPM and provides idling stability for fast idle±up when the engine is
cold and when the idle speed has dropped due to electrical load, etc. The engine control module evaluates the signals
from each sensor (Input signals (1), (4) to (8), (13) etc.), outputs current to TERMINALS ISCO and ISCC, and controls
the idle air control valve.
*Fuel pump control system
The engine control module operation outputs to TERMINAL FC and controls the CIR OPN relay. Thus controls the fuel
pump drive speed in response to conditions.
*EGR control system
The EGR cut control system controls the VSV (EGR) by evaluating the signals from each sensor which are input to the
engine control module (Input signals (1), (5), (6), (9) etc.) and by sending output to TERMINAL EGR of the engine
control module.
*A/C conditioning operation system
In addition to the conventional A/C cut control, the engine control module performs the air conditioning operation as well
since the A/C amplifier function is built in it.
3. DIAGNOSIS SYSTEM
With the diagnosis system, when there is a malfunctioning in the engine control module signal system, the malfunction
system is recorded in the memory. The malfunctioning system can then be found by reading the display (Code) of the
malfunction indicator lamp.
4. FAIL±SAFE SYSTEM
When a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control based
on the signals from that system, the fail±safe system either controls the system by using data (Standard values) recorded in
the engine control module memory or else stops the engine.
E7 (A), E8 (B), E9 (C), E10 (D) ENGINE CONTROL MODULE
Voltage at engine control module wiring connector
BATT±E1 : Always 9.0±14.0 volts
+B±E1 :9.0±14.0 volts (Ignition SW at ON position)
VC±E2 :4.5± 5.5 volts (Ignition SW at ON position)
VTA±E2 :0.3± 0.8 volts (Ignition SW on and throttle valve fully closed)
3.2±4.9 volts (Ignition SW on and throttle valve open)
PIM±E2 :3.3± 3.9 volts (Ignition SW at ON position)
THA±E2 :0.5±3.4 volts (Ignition SW on and intake air temp. 20°C, 68°F)
THW±E2 :0.2± 1.0 volts (Ignition SW on and coolant temp. 80°C, 176°F)
STA±E1 :6.0±14.0 volts (Engine cranking)
W±E1 :9.0±14.0 volts (No trouble and engine running)
TE1±E1 :9.0±14.0 volts (Ignition SW at ON position)
NSW±E1 :0± 3.0 volts (Ignition SW on and Park/Neutral position SW position P or N position)
9.0±14.0 volts (Ignition SW on and except Park/Neutral position SW position P or N position)
IGT1, IGT2±E1 : Pulse generation (Engine cranking or idling)
#10, #20, #30, #40±E01, E02 :9.0±14.0 volts (Ignition SW at ON position)
RESISTANCE AT ENGINE CONTROL MODULE WIRING CONNECTORS
(Disconnect wiring connector)
VC±E2 :2.5±5.0 kW
THA±E2 :2.21±2.69 kW (Intake air temp. 20°C, 68°F)
THW±E2 :0.29±0.354 kW (Coolant temp. 80°C, 176°F)
SERVICE HINTS

ABS AND TRACTION CONTROL
(ABS)
ABS is a brake system designed for the purpose to improve the operating ability securing the stability of the vehicle by
preventing the looking±up of the vehicle controlling the wheel cylinder pressure of all the four wheels at the time of sudden
braking.
1. INPUT SIGNALS
(1) Speed sensor signal
The speed of the wheels is detected and input to TERMINALS FL+, FR+, RL+, and RR+ of the ABS and traction ECU.
(2) Stop light SW signal
A signal is input to TERMINAL STP of the ABS and traction ECU when brake pedal is depressed.
2. SYSTEM OPERATION
When the wheels are to be locked±up, the solenoid inside the actuator will be controlled by the signal from the ABS and
traction ECU and the brake fluid in the wheel cylinder will flow through the reservoir and reduce the hydraulic pressure.
While the ABS is in operation, as the ABS and traction ECU always outputs the operation signal to the pump inside the
actuator, brake fluid stored inside the reservoir will be suctioned up by the pump inside the actuator and returned to the
master cylinder.
When the hydraulic pressure of the wheel cylinder is decompressed or increased until the necessary hydraulic pressure, the
solenoid inside the actuator is controlled by the control signal from the ABS and traction ECU and as a result, hydraulic
pressure of the wheel cylinder will be closed at both routes of the master cylinder and reservoir sides and the hydraulic
pressure of the wheel cylinder will become to be in the holding condition.
If the increase of hydraulic pressure volume of the wheel cylinder becomes necessary, with the control signal from the ABS
and traction ECU, the solenoid inside the actuator will be controlled and become the same condition as usual and the brake
fluid of the master cylinder will be sent to the wheel cylinder and will increase the hydraulic pressure of the wheel cylinder. At
this time, in the case that the brake fluid stays left in the reservoir, it will be sucked up by the pump inside the actuator and
will be sent to the wheel cylinder.
Also, increasing speed of the hydraulic pressure is controlled by outputting the increasing and the said holding one after
another.
(Traction control)
Traction control system is designed to perform the engine output control by the fuel cut and hydraulic pressure control of
driving wheel brake and control the spinning of the driving wheels. By doing this, it improves starting acceleration and
operating ability of the vehicle securing the driving ability in accordance with the road surface condition.
3. TRACTION CONTROL OPERATION
Estimating the vehicle speed from the rear wheel speed, comparing it with the front, driving wheel speed and judging the grip
condition of the driving wheels. From the estimated vehicle speed, target speed of the driving speed will be set. When the
front, driving wheel speed exceeds the control starting speed, it judges that the tire slip is occurred and performs the fuel cut
cylinder number control and brake control and then adjust to make the front wheel speed become the traction control target
speed. Controlling of the traction control will be completed when the vehicle move onto the road where the driving wheels will
not have a tire slip or when the driver decelerate.
ABS MOTOR RELAY [R/B NO.3]
3±4 : Approx. 62 W
ABS SOL RELAY [R/B NO.3]
4±6 : Approx. 80 W
A9, A10 ABS SPEED SENSOR FRONT LH, RH
1±2 :0.6 kW±2.5 kW
A15 (A), A16 (B), A17 (C) ABS AND TRACTION ECU
(B) 8±GROUND : Approx. 12 volts with the ignition SW at ON position
(B)11±GROUND : Continuity with the ignition SW on and the traction off SW on (Traction control off)
(B)16±GROUND : Approx. 12 volts with the brake pedal depressed
(A)15, (C) 9, (C) 10±GROUND : Always continuity
A25, A26
ABS SPEED SENSOR REAR LH, RH
1±2 :1.2 kW±2.3 kW
T2 THROTTLE POSITION SENSOR
1±2 :3.5 kW±5.0 kW
SYSTEM OUTLINE
SERVICE HINTS

I GROUND POINT
BUCKLE SW LH
POWER SEAT CONTROL
SW
(
DRI VER' S SE AT)
FUEL PUMP
HIGH MOUNTED
STOP LIGHT
REAR COMBINATION
LIGHT LH
REAR COMBINATION
LIGHT RHBUCKLE SW LH
LICENSE PLATE
LIGHT RH
LICENSE PLATE
LIGHT LH
REAR COMBINATION
LIGHT RH
REAR COMBINATION
LIGHT LH
DOOR LOCK MOTOR
AND DOOR UNLOCK
DETECTION SW
REAR LH
REA R WINDOW
DEFOGGER LUGGAGE COMPARTMENT
KEY UNLOCK SW
LI GHT FAI LURE
SENSORB12
B11
B11
B11
B11B 9
B 9
B 9
BO16 BQ11
W±B
W±B
W±B
W±B
W±B
W±B
W±BW± B
W± B
W± B
W± B
W± B
W± B W±B W± B
W±B (
*10)
(
*10)(
*10)
BL
BO BPA
A
AA
A
A
W± B W± B W± B W±B
W±B W±BB W±B
W±B (
*10)
JUNCTION
CONNECTOR J40 W±B A
* 10 : W/ POWER SEAT
* 11 : W/O POWER SEAT(
*11) W± B