1996 TOYOTA RAV4 terminals

S02386
1H
1DEA1
IG1 22 IG1 IG1
E4
E4
E4
E4
E4
E4 B−R
B−Y
B−R
B−Y
BR
BRE02 E01#40 #30 #20 #10ECM
Injector 8
J/B No.1
IG Switch
8 14
7
11
7 621
202
2
2
2 B−O 31
1
1
1 No.1
No.2
No.3
No.4 B−O
B−O
B−O B−O B−O12
11
25
24
13
26
EC
BatteryFusible Link Block
MAIN
W B−R2
B
B−R
B−YB−Y
B−R
J/B No.2
AM2
FI6588
FI6538
A00064
10 V/
Division10 V/
Division(Magnification)
100 m sec./Division (idling)1 m sec./Division (Idling)
Injection durationGND GND
DI−52
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
WIRING DIAGRAM
Reference INSPECTION USING OSCILLOSCOPE
INJECTOR SIGNAL WAVEFORM
With the engine idling, measure between terminals #10, #20, #30, #40 and E01 of ECM.
HINT:
The correct waveform is as shown.

FI7059FI7060A06620
NENEG
G20 m sec./Division (Idling)
10 m sec./Division (Idling)
5 V/Division
5 V/Division
DI−60
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
1 Check resistance of crankshaft position sensor (See page IG−14).
Reference:
INSPECTION USING OSCILLOSCOPE
During cranking or idling, check between terminals G  and NE
, NE  and NE  of ECM.
HINT:
The correct waveforms are as shown.
NG Replace crankshaft position sensor.
OK
2 Check for open and short in harness and connector between ECM and crank-
shaft position sensor (See page IN−30).
NG Repair or replace harness or connector.
OK

(4) (3)
(2)
(1)
FI7132
2500 − 3000 rpm Engine Speed
Warmed up 3 minutes IG SW OFFIdling
Time
Check
FI6514
OX Signal Waveform (Oscilloscope)
200 msec./Division 1.0 V
0 V DI−74
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
CONFIRMATION ENGINE RACING PATTERN
(1) Connect the TOYOTA hand−held tester to the DLC3, or connect the probe of the oscilloscope between
terminals OX1, OX2 and E1 of ECM.
(2) Start engine and warm it up with all accessories switched OFF until water temperature is stable.
(3) Race the engine at 2500 − 3000 rpm for about 3 min.
(4) After confirming that the waveforms of the oxygen sensor, bank 1 sensor 1 (OX1), oscillate around 0.5
V during feedback to the ECM, check the waveform of the oxygen senor, bank 1 sensor 2 (OX2).
HINT:
If there is a malfunction in the system, the waveform of the oxy-
gen senor, bank1 sensor 2 (OX2), is almost the same as that
of the oxygen sensors, bank 1 senor 1 (OX1), on the left.
There are some cases where, even though a malfunction ex-
ists, the MIL may either light up or not light up.

A00389
ON
E2
(−)VC
(+)
A00409
ON
PTNK (+) E2 (−)
Vacuum
DI−80
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
9 Check voltage between terminals VC and E2 of ECM connector.
PREPARATION:
(a) Remove side trim cover (See page SF−61).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals VC and E2 of ECM con-
nector.
OK:
Voltage: 4.5 − 5.5 V
NG Check and replace ECM (See page IN−30).
OK
10 Check voltage between terminals PTNK and E2 of ECM connector.
PREPARATION:
(a) Remove side trim cover (See page SF−61).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals PTNK and E2 of ECM con-
nector.
(1) Disconnect the vacuum hose from the vapor pres-
sure sensor.
(2) Using the MITYVAC (Hand−Held Vacuum Pump),
apply vacuum (4.0 kPa, 30 mmHg, 1.18 in. Hg) to
the vapor pressure sensor.
NOTICE:
The vacuum applied to the vapor pressure sensor must be
less than 66.7 kPa (500 mmHg).
OK:
(1) Voltage: 2.9 − 3.7 V
(2) Voltage: 0.5 V or less
OK Go to step 12.
NG
11 Check for open and short in harness and connector between vapor pressure
sensor and ECM (See page IN−30).

DI−84
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
OK
3 Check voltage between terminals VC and E2 of ECM connector
(See page DI−76, step 9).
NG Check and replace ECM (See page IN−30).
OK
4 Check voltage between terminals PTNK and E2 of ECM connector
(See page DI−76, step 10).
OK Go to step 6.
NG
5 Check for open and short in harness and connector between vapor pressure
sensor and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Replace vapor pressure sensor.

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

A00411
Engine
VSV for
Vapor Pressure
VSV for
EVAP
OFF OFF
ON Stop
ONStart
5 sec. 5 sec.
PTNK
(+)E2
(−)
DI−88
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
14 Check the charcoal canister.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Remove the fuel rank cap.
(c) Disconnect the VSV connector for vapor pressure sensor.
(d) Select the ACTIVE TEST mode on the TOYOTA hand−
held tester.
(e) Remove side trim cover (See page SF−61).
(f) Start the engine.
(g) VSV for EVAP is ON by TOYOTA hand−held tester and
remains on for 5 sec.
CHECK:
Measure voltage between terminals PTNK and E2 of ECM con-
nector 5 secs. after switching VSV for EVAP from ON to OFF.
OK:
Voltage: 2.5 V or less
NG Replace charcoal canister.
OK
Check and replace ECM (See page IN−30).
OBDII scan tool (excluding TOYOTA hand−held tester)
1 Check the VSV connector for EVAP, VSV connector for vapor pressure sensor
and vapor pressure sensor connector for looseness and disconnection.
NG Repair or connect the VSV or sensor connector.
OK
2 Check the vacuum hose between intake manifold and VSV for EVAP,VSV for
EVAP and charcoal canister, charcoal canister and VSV for vapor pressure sen-
sor, and VSV for vapor pressure sensor and vapor pressure sensor.
CHECK:
(a) Check that the vacuum hose is connected correctly.
(b) Check the vacuum hose for looseness and disconnection.

− DIAGNOSTICSENGINE
DI−89
1996 RAV4 (RM447U)
(c) Check the vacuum hose for cracks, hole, damage and blockage.
NG Repair or replace.
OK
3 Check voltage between terminals VC and E2 of ECM connector
(See page DI−76, step 9).
NG Check and replace ECM (See page IN−30).
OK
4 Check voltage between terminals PTNK and E2 of ECM connector
(See page DI−76, step 10).
OK Go to step 6.
NG
5 Check for open and short in harness and connector between vapor pressure
sensor and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Replace vapor pressure sensor.