1996 TOYOTA LAND CRUISER engine coolant

P22216
Pressure RegulatorVSV
ECM
To Fuel Tank
(Return)
From Delivery Pipe Intake
Manifold
P22482
BRFrom BatteryR/B No.2EB
2
2
2
2
EFI Main
22Y−R
Y−R
EB11
REA27R
R−Y
EZ1
VSV for Fuel21
EZ1
Relay
EFI
12 4
3
1B B3
L−R
Pressure Control E7
E4 3
21 FPU
MRLY
ECM
B+
E01
−
DIAGNOSTICS ENGINE
DI−125
1996 LAND CRUISER (RM451U)
Fuel Pressure Control Circuit
CIRCUIT DESCRIPTION
The ECM turns on a VSV (V acuum Switching Valve) to draw the
air into the diaphragm chamber of the pressure regulator if it de-
tects that the temperature of the engine coolant is too high dur-
ing engine starting.
The air drawn into the chamber increases the fuel pressure to
prevent fuel vapor lock at high engine temperature in order to
help the engine start when it is warm.
Fuel pressure control ends approx. 120 sec. after the engine is
started.
WIRING DIAGRAM
DI5PZ−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

DI5KD−02
Q08236
No. 1 Vehicle
Speed Sensor
O/D OFF Indicator Light
MIL
Pattern Select Switch O/D Main Switch
DLC1
Shift Solenoid Valve SL
ECM
Stop Light Switch L4 Position Sensor
Park/Neutral Position Switch No. 2 Vehicle Speed Sensor
Shift Solenoid Valve No. 2
Shift Solenoid Valve No. 1
Engine Coolant Temperature Sensor
Throttle Position Sensor
ATF Temperature Sensor
DLC3
Transfer Neutral
Position Switch
DI−144
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
PARTS LOCATION
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

DI5KE−03
Vd762D00115
E4
11
12
13 1415
16
10 12
3
4
567
8
9
10
11
12
123
456
7
1
2
34
56
8910
11
7
8
9
12141516 13
17181920
21
22
23
242526
ECM T
erminals
1
23
4
5
6
7
89
10
11
13 12
15
16
171819202122 14
E5E6E7
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−145
1996 LAND CRUISER (RM451U)
TERMINALS OF ECM
Symbols (T erminal No.)Wiring ColorConditionSTD Voltage (V)
SPD (E7−8) − E1 (E4− 24)L− W − BR− B
Disconnect cruise control connector and IG ON StationaryBelow 1.5
Disconnect cruise control connector and IG ON
Turn one rear wheel slowlyPulse signal is outputBelow 1.5 ↔ 4 − 6
S1 (E4− 10) − E1 (E4− 24)R − BR− B
IG OFF Disconnect ECM connector11 − 15 Ω
IG ON9 − 14
1st or 2nd gear9 − 14
3rd or O/D gearBelow 1.5
S2 (E4− 9) − E1 (E4− 24)R−Y − BR− B
IG OFF Disconnect ECM connector11 − 15 Ω
IG ONBelow 1.5
2nd or 3rd gear9 − 14
1st or O/D gearBelow 1.5
SL (E4− 8) − E1 (E4− 24)R−L − BR− B
IG OFF Disconnect ECM connector11 − 15 Ω
IG ONBelow 1.5
Vehicle driving under lock −up position9 − 14
SP2+ (E6− 2) − SP− (E6− 8)V − V−G
IG OFF Disconnect ECM connector560 − 680 Ω
Engine is runningPulse signal is output
Below 1.5 ↔ 4 − 6
OD1 (E7− 18) − E1 (E4− 24)G−O − BR− BIG ON9 − 14
OD2 (E7− 19) − E1 (E4− 24)P−L − BR− BO/D main switch ON (O/D OFF)Below 3
O/D main switch OFF (O/D ON)9 − 14
OIL (E5− 12) − E2 (E5− 9)R−W − BR− BATF temperature: 110 °C (230° F)Below 1.5
L (E7−17) − E1 (E4− 24)G−W − BR− BIG ON Shift lever L position7.5 − 14
IG ON Shift lever other than L positionBelow 1.5
2 (E7−16) − E1 (E4− 24)O − BR− BIG ON Shift lever 2 position7.5 − 14
IG ON Shift lever other than 2 positionBelow 1.5
R (E7−15) − E1 (E4− 24)R−B − BR− BIG ON Shift lever R position7.5 − 14
IG ON Shift lever other than R positionBelow 1.5
NSW (E7−22) − E1 (E4− 24)B−W − BR− BIG ON Shift lever P or N positionBelow 3
IG ONShift lever other than P and N position9 − 14
STP (E7− 14) − E1 (E4− 24)G−W − BR− BIG ON Brake pedal is depressed7.5 − 14
IG ON Brake pedal is releasedBelow 1.5
THW (E5−4) − E2 (E5− 9)R−W − BR− BIG ON Engine coolant temperature 80 °C (176° F)Below 1.5
IDL (E5− 11) − E2 (E5− 9)G−W − BR− BIG ON Accel. pedal is releasedBelow 1.5
IG ONAccel. pedal is depressed9 − 14
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

DI5KH−03
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−147
1996 LAND CRUISER (RM451U)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the diagnostic trouble code check but\
the trouble still occurs, check the
circuits for each symptom in the order given in the charts on the following pages and\
proceed to the page
given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
Chapter 1: Electronic Circuit Matrix Chart
Chapter 2: On−Vehicle repair Matrix Chart
Chapter 3: Off−Vehicle repair Matrix Chart
When troubleshooting, check Chapter 1 first. If instructions are given i\
n Chapter 1 to proceed to chapter 2
or 3, proceed as instructed.
(1) If the instruction ”Proceed to next circuit inspection shown on matrix chart” is given in the flow
chart for each circuit, proceed to the circuit with the next highest number in the table to cont\
inue
the check.
(2) If the trouble still occurs even though there are no abnormalities in any\
of the other circuits, then check and replace the ECM.
Chapter 1: Electronic Circuit Matrix Chart
SymptomSuspect AreaSee page
Vehicle does not move in any forward position and reverse posi-
tion6. On−vehicle repair matrix chart
7. Off −vehicle repair matrix chart−
−
Vehicle does not move in a particular position or positions1. On −vehicle repair matrix chart
2. Off −vehicle repair matrix chart−
−
No up− shift (1st → 2nd)
1. Shift solenoid valve No. 1 and No. 2 circuit
2. Throttle position sensor circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. On −vehicle repair matrix chart
6. Park/neutral position switch circuit
7. Off −vehicle repair matrix chart
8. ECMDI−157 DI−35
DI−87
DI−166 −
DI−169 −
DI−145
No up −shift (2nd → 3rd)
1. Shift solenoid valve No. 1 and No. 2 circuit
2. Throttle position sensor circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. On−vehicle repair matrix chart
6. Park/neutral position switch circuit
7. Off −vehicle repair matrix chart
8. ECMDI−157 DI−35
DI−87
DI−166 −
DI−169 −
DI−145
No up− shift (3rd → O/D)
1. O/D main switck& O/D OFF indicator light circuit
2. Shift solenoid valve No. 1 and No. 2 circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. Throttle position sensor circuit
6. Park/neutral position switch circuit
7. O/D cancel signal circuit
8. Engine coolant temp. sensor circuit
9. On−vehicle repair matrix chart
10.Off −vehicle repair matrix chart
11. ECMDI−174
DI−157 DI−87
DI−166 DI−35
DI−169
DI−172 DI−30 −
−
DI−145
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

DI−148
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
No down−
shift (O/D → 3rd)
1. Shift solenoid valve No. 1 and No. 2 circuit
2. Throttle position sensor circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. On−vehicle repair matrix chart
6. ECMDI−157 DI−35
DI−87
DI−166 −
DI−145
No down −shift (3rd → 2nd)
1. Shift solenoid valve No. 1 and No. 2 circuit
2. Throttle position sensor circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. On−vehicle repair matrix chart
6. ECMDI−157 DI−35
DI−87
DI−166 −
DI−145
No down −shift (2nd → 1st)
1. Shift solenoid valve No. 1 and No. 2 circuit
2. Throttle position sensor circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. On−vehicle repair matrix chart
6. Off −vehicle repair matrix chart
7. ECMDI−157 DI−35
DI−87
DI−166 −
−
DI−145
Lock− up does not engage
1. Shift solenoid valve SL circuit
2. Throttle position sensor circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. Stop light switch circuit
6. Park/neutral position switch circuit
7. Engine coolant temp. sensor circuit
8. On −vehicle repair matrix chart
9. Off −vehicle repair matrix chart
10.ECMDI−163
DI−35
DI−87
DI−166
DI−185
DI−169 DI−30 −
−
DI−145
Lock− up does not disengage
1. Shift solenoid valve SL circuit
2. Throttle position sensor circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. Stop light switch circuit
6. On −vehicle repair matrix chart
7. Off −vehicle repair matrix chart
8. ECMDI−163 DI−35
DI−87
DI−166
DI−185 −
−
DI−145
Shift point too high or too low
1. Throttle position sensor circuit
2. Pattern select switch circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. ECMDI−35
DI−179 DI−87
DI−166
DI−145
Up− shifts to 2nd while in L position
Up− shifts to 3rd while in L position1. Park/neutral position switch circuit
2. ECMDI−169
DI−145
Up− shifts to O/D from 3rd while O/D main switch is OFF1. O/D main switck& O/D OFF indicator light circuit
2. ECMDI−174
DI−145
Up−shift to O/D from 3rd while engine is cold
1. Engine coolant temp. sensor circuit
2. On −vehicle repair matrix chart
3. Off −vehicle repair matrix chart
4. ECMDI−30 −
−
DI−145
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

EC0GB−01
EC3069
Gasket
Check Valve (V acuum Valve)
EC−6
−
EMISSION CONTROL EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
INSPECTION
1. VISUALLY INSPECT LINES AND CONNECTIONS
Look for loose connections, sharp bends or damage.
2. VISUALLY INSPECT FUEL TANK
Look for deformation, cracks or fuel leakage.
3. VISUALLY INSPECT FUEL TANK CAP
Check if the cap and/or gasket are deformed or damaged.
If necessary, repair or replace the cap.
4. INSPECT TVV OPERATION WITH COLD ENGINE
(a) The engine coolant temperature should be below 45 °C
(113 °F).
(b) Disconnect the EVAP hose from the union pipe.
(c) Start the engine.
(d) Gradually increase the engine speed from idle to 3,000 rpm and check that air suction is not felt at the union pipe.
5. INSPECT OPERATION OF VCV WITH HOT ENGINE
(a) Warm up the engine.
(b) With the engine idling, check that air suction is not felt at union pipe.
(c) Gradually increase the engine speed to 3,000 rpm and check that there is air suction at the union pipe.
(d) Reconnect the EVAP hose to the union pipe.
If no problem is found with this inspection, system is normal;
otherwise inspect each part.
6. REMOVE CHARCOAL CANISTER WITH BRACKET
7. REMOVE CHARCOAL CANISTER FROM BRACKET
8. REMOVE CAP FROM CHARCOAL CANISTER
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

−
EMISSION CONTROL EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
EC−7
1996 LAND CRUISER (RM451U)
9. VISUALLY INSPECT CHARCOAL CANISTER
Look for cracks or damage.
10. INSPECT FOR CLOGGED FILTER AND STUCK VALVE
(a) Using low pressure compressed air (7.26 kPa, 74 gf/cm
2,
1.05 psi), blow into tank pipe and check that air flows with-
out resistance from the other pipes.
(b) While holding drain pipe closed, blow air (1.96 kPa, 20 gf/
cm
2, 0.28 psi) into purge pipe and check that air flow with-
out resistance from tank pipe.
If a problem is found, replace the charcoal canister.
11. CLEAN FILTER IN CANISTER
Clean the filter by blowing 294 kPa (3 kgf/cm
2, 43 psi) of com-
pressed air into tank pipe while holding purge pipe closed.
NOTICE:
Do not attempt to wash the canister.No activated carbon
should come out.
12. REINSTALL CAP TO CHARCOAL CANISTER
13. REINSTALL CHARCOAL CANISTER TO BRACKET Torque: 14 N·m (145 kgf·cm, 10 ft·lbf)
14. REINSTALL CHARCOAL CANISTER WITH BRACKET Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)
15. DRAIN ENGINE COOLANT
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

EC−8
−
EMISSION CONTROL EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
16. REMOVE TVV FROM CYLINDER HEAD
(a) Disconnect the 2 vacuum hoses.
(b) Remove the TVV.
17. INSPECT TVV OPERATION
(a) Cool the TVV to below 45° C (113°F) with cool water.
(b) Check that air flows from pipe J to the air filter.
(c) Heat the TVV to above 64° C (147°F) with hot water.
(d) Check that air flows from pipe J to pipe K.
If operation is not as specified, replace the TVV.
18. REINSTALL TVV
(a) Apply adhesive to 2 or 3 threads of the TVV, and install it.
Adhesive:
Part No. 08833 −00070, THREE BOND 1324
or equivalent
Torque: 29 N·m (300 kgf·cm, 22 ft·lbf)
(b) Reconnect 2 vacuum hoses.
19. REFILL WITH ENGINE COOLANT
20. REMOVE INTAKE MANIFOLD STAY
21. REMOVE VCV
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010