1996 TOYOTA RAV4 relay

S02388
6
66
6 3
15
2
1J 1E21J/B No.1 From
BatteryVaper Pressure Sensor
E5
E5
E5
E4
E58 229
7 1
EA1
B−R
B−O
11Fuse Block
From
IG SwitchVSV
(for Vapor
Pressure Sensor) VSV
(for EVAP)VC
PTNK
E2
EVP
TPCE01
E01 5V ECM
E1
B−R
1P
2 1
B−R BRL−Y Y
1 2 3
R/B No.6
2
B−R
W−B2
EA 10
IGN R−W
EFI Main Relay
R−W A
A
W−B
J1 Junction
Connector B−O
− DIAGNOSTICSENGINE
DI−77
1996 RAV4 (RM447U)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
If DTC P0441, P0446 or P0450 is output after DTC P0440, first troubleshoot DTC P0441, P0446 or
P0450. If no malfunction is detected, troubleshoot DTC P0440 next.
Ask the customer whether, after the MIL came on, the customer found the fuel tank cap loose and tight-
ened it. Also ask the customer whether the fuel tank cap was loose when refuelling.
If the fuel tank cap was loose, it was the cause of the DTC. If the fuel tank cap was not loose or if the
customer was not sure if it was loose, troubleshoot according to the following procedure.

S02468P25068A07401
VSV Connector
for Vapor Pressure Sensor
PTNK (+)E2 (−)
DI−86
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
9 Check for open and short in harness and connector between EFI main relay
(Marking: EFI) and VSV for EVAP and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN−30).
10 Connect the TOYOTA hand−held tester, when VSV connector for vapor pressure
sensor is disconnected and VSV for EVAP is ON, measure voltage between ter-
minals PTNK and E2 of ECM connector.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Disconnect the VSV connector for vapor pressure sensor.
(c) Select the ACTIVE TEST mode on the TOYOTA hand−
held tester.
(d) Remove side trim cover (See page SF−61).
(e) Start the engine.
CHECK:
Measure voltage between terminals PTNK and E2 of ECM con-
nector, when VSV for EVAP is ON, using the TOYOTA hand−
held tester.
OK:
Voltage: 2.0 V or less
OK Go to step 12.
NG

− DIAGNOSTICSENGINE
DI−87
1996 RAV4 (RM447U)
11 Check the vacuum between charcoal canister and VSV for vapor pressure sen-
sor, and vapor pressure sensor and VSV for vapor pressure sensor.
CHECK:
(a) Check that the vacuum hose is connected correctly.
(b) Check the vacuum hose for looseness and disconnection.
(c) Check the vacuum hose for cracks, hole, damage and blockage.
NG Repair or replace.
OK
12 Check operation of the VSV for vapor pressure sensor (See page SF−47).
NG Replace VSV.
OK
13 Check for open and short in harness and connector between EFI main relay
(Marking: EFI) and VSV for vapor pressure sensor and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK

A00412
ON
EVP
ONOFF
E
F
VSV is ON VSV is OFFFE
DI−90
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
6 Check the VSV for EVAP.
PREPARATION:
(a) Remove side trim cover (See page SF−61).
(b) Turn the ignition switch ON.
CHECK:
Check VSV function.
(1) Connect between terminal EVP of ECM and body
ground.
(2) Disconnect between terminal EVP of ECM and
body ground.
OK:
(1) VSV is ON:
Air from pipe E is following out through pipe F.
(2) VSV is OFF:
Air does not flow from pipe E to pipe F.
OK Go to step 9.
NG
7 Check operation of the VSV for EVAP (See page SF−43).
NG Replace VSV.
OK
8 Check for open and short in harness and connector between EFI main relay
(Marking: EFI MAIN) and VSV for EVAP and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN−30).

A00413
ON
TPC ON OFF
E
F
VSV is ON VSV is OFFFE
G
G E
− DIAGNOSTICSENGINE
DI−91
1996 RAV4 (RM447U)
9 Check the VSV for vapor pressure sensor.
PREPARATION:
(a) Remove side trim cover (See page SF−61).
(b) Turn the ignition switch ON.
CHECK:
Check VSV function
(1) Connect between terminal TPC of ECM and body
ground.
(2) Disconnect between terminal TPC of ECM and
body ground.
OK:
VSV is ON:
Air from pipe E is flowing out through pipe F.
VSV is OFF:
Air from pipe E is flowing out through pipe G.
OK Check and replace charcoal canister
(See page EC−5).
NG
10 Check operation of the VSV for vapor pressure sensor (See page SF−47).
NG Replace VSV.
OK
11 Check for open and short in harness and connector between EFI main relay
(Marking: EFI) and VSV for vapor pressure sensor and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN−30).

S02401
6
66 6 5
2 13R/B No.6
From Battery
Fuse Block
1J
1E
B−O11 1
2
From
IG SwitchECM
ISCO
ISCC E4
E4 B−L
B−Y10
9 IAC Valve
EA12
2
B−R B−R
W−B W−B
EA J1
Junction Connector
AA EFI Main Relay R−W
IGNE01
E01
J/B No.13 1
10 B−O
DI−98
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check air induction system (See page EC−5).
NG Repair or replace.
OK
2 Check A/C signal circuit (See page AC−64).
NG Repair or replace.
OK
3 Check voltage between terminals ISCO, ISCC of ECM connector and body
ground.

DI−106
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
TOYOTA hand−held tester:
1 Connect TOYOTA hand−held tester and check STA signal.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Turn ignition switch ON and push TOYOTA hand−held tester main switch ON.
CHECK:
Read STA signal on the TOYOTA hand−held tester while starter operates.
OK:
Ignition Switch PositionONSTART
STA SignalOFFON
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−20).
NG
2 Check for open in harness and connector between ECM and starter relay
(See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM
(See page IN−30).

A00422
STA (+)
START
− DIAGNOSTICSENGINE
DI−107
1996 RAV4 (RM447U)
OBDII scan tool (excluding TOYOTA hand−held tester):
1 Check voltage between terminal STA of ECM connector and body ground.
PREPARATION:
(a) Turn up the floor mat on the passenger side.
(b) Remove the 2 bolts for ECM.
CHECK:
Measure the voltage between terminal STA of ECM connector
and the body ground during engine is cranking.
OK:
Voltage: 6.0 V or more.
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−20).
NG
2 Check for open in harness and connector between ECM and starter relay
(Marking: ST) (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECM
(See page IN−30).