Temp sensor TOYOTA LAND CRUISER 1996 J80 Repair Manual

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
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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
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−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−149
1996 LAND CRUISER (RM451U)
Harsh engagement (N
→ D)
1. Shift solenoid valve SL circuit
2. ATF temp. sensor circuit
3. Throttle position sensor circuit
4. Park/neutral position switch circuit
5. On −vehicle repair matrix chart
6. Off −vehicle repair matrix chart
7. ECMDI−163
DI−154 DI−35
DI−169 −
−
DI−145
Harsh engagement (Lock −up)
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. On −vehicle repair matrix chart
6. Off −vehicle repair matrix chart
7. ECMDI−163 DI−35
DI−87
DI−166 −
−
DI−145
Harsh engagement (Any driving position)
1. Shift solenoid valve SL circuit
2. ATF temp. sensor circuit
3. Throttle position sensor circuit
4. No. 1 vehicle speed sensor circuit
5. No. 2 vehicle speed sensor circuit
6. On −vehicle repair matrix chart
7. Off −vehicle repair matrix chart
8. ECMDI−163
DI−154 DI−35
DI−87
DI−166
−
−
DI−145
Slip or shudder (Forward and reverse)1. On −vehicle repair matrix chart
2. Off −vehicle repair matrix chart−
−
Slip or shudder (A particular position)1. On −vehicle repair matrix chart
2. Off −vehicle repair matrix chart−
−
No engine braking1. On −vehicle repair matrix chart
2. Off −vehicle repair matrix chart−
−
Poor acceleration
1. Throttle position sensor circuit
2. No. 1 vehicle speed sensor circuit
3. No. 2 vehicle speed sensor circuit
4. Shift solenoid valve No. 1 and No. 2 circuit
5. Shift solenoid valve SL circuit
6. On −vehicle repair matrix chart
7. Off −vehicle repair matrix chartDI−35
DI−87
DI−166
DI−157
DI−163 −
−
No kick− down
1. Throttle position sensor circuit
2. Shift solenoid valve No. 1 and No. 2 circuit
3. No. 1 vehicle speed sensor circuit
4. On−vehicle repair matrix chart
5. ECMDI−35
DI−157 DI−87 −
DI−145
No pattern select1. Pattern select switch circuit
2. ECMDI−179
DI−145
No 2nd start
1. Pattern select switch circuit
2. Shift solenoid valve No. 1 and No. 2 circuit
3. ECMDI−179
DI−157
DI−145
Large shift shock or engine stalls when starting off or stopping
1. Shift solenoid valve SL circuit
2. Stop light switch circuit
3. Off −vehicle repair matrix chart
4. ECMDI−163
DI−185 −
DI−145
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Q04346
ATF Temperature SensorOIL
E5
R−W
BR−B
1 2
E2
E5 ECM
12 9 4 −
6 V
DI−154
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
DTC P0710 Transmission Fluid Temperature Sensor Cir-
cuit Malfunction (ATF Temperature Sensor)
CIRCUIT DESCRIPTION
The ATF temperature sensor converts fluid temperature into resistance value w\
hich is input into the ECM.
DTC No.DTC Detecting ConditionTrouble Area
P0710
Either (a) or (b) is detected for 0.5 sec. or more
(a) Temp. sensor resistance is less than 79 Ω
(b) After the engine has been operating for 15 min. or more, the resistance at the temp. sensor is more than 156 k ΩOpen or short in ATF temp. sensor circuit
 ATF temp. sensor
 ECM
WIRING DIAGRAM
DI5KK−02
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Q07002
20°C and 110 °C
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−155
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Check ATF temperature Sensor.
PREPARATION:
Remove the ATF temperature sensor.
CHECK:
Measure the resistance between terminals of the ATF tempera-
ture sensor at 20° C (68°F) and 110 °C (230° F).
OK:
Resistance :
20 °C (68° F): Approx. 12.2 kΩ
11 0 °C (230°F): Approx. 770 Ω
NG Replace ATF temperature sensor.
OK
2 Check harness and connector between ATF temperature sensor and ECM (See page IN−28 ).
NG Repair or replace harness or connector.
OK
Check and replace ECM.
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EM−30
−
ENGINE MECHANICAL CYLINDER HEAD
1996 LAND CRUISER (RM451U)
(b) Disconnect the connectors.
(1) Disconnect the knock sensor connector.
(2) Disconnect the oil level sensor connector.
(3) Disconnect the 2 connectors from the transmission.
(4) Disconnect the starter connector.
(c) Disconnect the 2 heated oxygen sensor connectors.
(d) Disconnect the PNP switch connector.
(e) Remove the 2 bolts and disconnect the engine wire from the intake manifold and cylinder block.
(f) Disconnect the PCV hose from the PCV valve.
(g) Remove the bolt holding the engine wire to the intake manifold.
(h) Disconnect the connectors. (1) Disconnect the connector for the emission controlvalve set assembly.
(2) Disconnect the 3 injector connectors.
(i) Disconnect the engine wire clamp.
(j) Disconnect the engine wire clamp.
(k) Disconnect the connectors.
(1) Disconnect the 3 injector connectors.
(2) Disconnect the EGR gas temp. sensor connector.
(l) Disconnect the clamp of the No. 6 injector wire from the bracket.
(m) Disconnect the engine wire from the cylinder head and in-
take manifold.
25. DISCONNECT NO. 2 WATER BYPASS PIPE
Remove the 3 bolts, and disconnect the bypass pipe from the
cylinder head.
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ENGINE MECHANICAL CYLINDER HEAD
EM−61
1996 LAND CRUISER (RM451U)
14. INSTALL HEATER PIPE
Install a new gasket, the heater pipe and ground cable with the
2 bolts and 2 nuts.
Torque:
20 N·m (200 kgf·cm, 14 ft·lbf) for bolt:
21 N·m (210 kgf·cm, 15 ft·lbf) for nut
15. INSTALL NO. 1 AND NO. 2 EXHAUST MANIFOLDS
(a) Install 2 new gaskets, No. 1 exhaust manifold and No. 2
exhaust manifold with the 13 nuts.
Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)
(b) Install the No. 1 heat insulator and No. 2 heat insulator with the 6 bolts.
Torque: 19 N·m (195 kgf·cm, 14 ft·lbf)
16. INSTALL FRONT EXHAUST PIPE
(a) Install 2 new gaskets and the front exhaust pipe with the 4 nuts.
Torque: 63 N·m (630 kgf·cm, 46 ft·lbf)
(b) Install the No. 1 support bracket with the 2 bolts. Torque: 24 N·m (240 kgf·cm, 17 ft·lbf)
(c) Connect the clamp and tighten the clamp bolt.
Torque: 19.5 N·m (195 kgf·cm, 14 ft·lbf)
(d) Connect the front exhaust pipe to the rear TWC with a new gasket, 2 bolts and 2 nuts.
Torque: 46 N·m (470 kgf·cm, 34 ft·lbf)
17. CONNECT NO. 2 WATER BYPASS PIPE
Connect the bypass pipe to the cylinder head with the 3 bolts.
Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)
18. CONNECT ENGINE WIRE
(a) Place the engine wire on the intake manifold.
(b) Connect the connectors. (1) Connect the 3 injector connectors.
(2) Connect the EGR gas temp. sensor connector.
(c) Connect the clamp of the No.6 injector wire to the bracket.
(d) Connect the engine wire clamp.
(e) Connect the engine wire clamp.
(f) Connect the connectors. (1) Connect the connector for the emission control
valve set assembly.
(2) Connect the 3 injector connectors.
(g) Install the bolt holding the engine wire to the intake man- ifold.
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−
IGNITION IGNITION SYSTEM
IG−7
741
Author: Date:
1996 LAND CRUISER (RM451U)
NOTICE:
”Cold” and ”Hot” in the following sentences express the
temperature of the coils themselves. ”Cold” is from −10° C
(14 °F) to 50° C (122°F) and ”Hot” is from 50 °C (122° F) to
100 °C (212 °F).
28. DISCONNECT DISTRIBUTOR CONNECTOR
29. REMOVE DISTRIBUTOR CAP WITHOUT DISCON- NECTING HIGH−TENSION CORDS
30. REMOVE ROTOR
31. INSPECT AIR GAPS
Using a thickness gauge, measure the gap between the signal
rotor and the pickup coil projection. Air gap: 0.2 − 0.4 mm (0.008 − 0.016 in.)
If the gap is not as specified, replace the distributor housing.
32. INSPECT SIGNAL GENERATOR (PICKUP COIL) RE- SISTANCE
Using an ohmmeter, check that the resistance of the pickup coil. Pickup coil resistance:
Cold G1 and G
G2 and G
NE and G185 − 275 Ω
185 − 275 Ω
185 − 275 Ω
Hot G1 and G
G2 and G
NE and G240 − 325 Ω
240 − 325 Ω
240 − 325 Ω
If the resistance is not as specified, replace the distributor hous-
ing.
33. REINSTALL ROTOR
34. REINSTALL DISTRIBUTOR CAP
35. RECONNECT DISTRIBUTOR CONNECTOR
NOTICE:
”Cold” and ”Hot” in the following sentences express the
temperature of the sensor itself.
”Cold” is from −10° C (14°F) to 50° C (122°F) and ”Hot” is
from 50° C (122°F) to 100° C (212°F).
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SF1EN−01
SF−26
−
SFI INJECTOR
1996 LAND CRUISER (RM451U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. DISCONNECT CRUISE CONTROL ACTUATOR CABLE
3. DISCONNECT ACCELERATOR CABLE
4. DISCONNECT THROTTLE CABLE
5. DISCONNECT NO.2 PCV HOSE
6. DISCONNECT AIR CLEANER HOSE
7. REMOVE EGR VACUUM MODULATOR AND VALVE (See page EC−10 )
8. REMOVE BOLT HOLDING HEATER INLET PIPE AND AIR INTAKE CHAMBER
9. DISCONNECT NO.1 PCV HOSE
10. DISCONNECT VACUUM SENSING HOSE
11. DISCONNECT NO.2 WATER BYPASS HOSE
12. DISCONNECT EVAP HOSE
13. DISCONNECT BRAKE BOOSTER HOSE
14. DISCONNECT THROTTLE POSITION SENSOR CON- NECTOR
15. DISCONNECT IDLE AIR CONTROL VALVE CONNEC-
TOR
16. DISCONNECT CONNECTOR FOR EMISSION CON- TROL VALVE SET ASSEMBLY
17. DISCONNECT EGR GAS TEMP. SENSOR CONNEC-
TOR
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SF−34
−
SFI INJECTOR
1996 LAND CRUISER (RM451U)
7. INSTALL INTAKE MANIFOLD STAY
Install the intake manifold stay with the 2 bolts.
Torque: 36 N·m (360 kgf·cm, 26 ft·lbf)
8. CONNECT GROUND STRAP
9. INSTALL ENGINE OIL DIPSTICK
10. CONNECT PS RESERVOIR TANK
Connect the reservoir tank with the 3 bolts. Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)
11. CONNECT EGR GAS TEMP. SENSOR CONNECTOR
12. CONNECT CONNECTOR FOR EMISSION CONTROL VALVE SET ASSEMBLY
13. CONNECT IDLE AIR CONTROL VALVE CONNECTOR
14. CONNECT THROTTLE POSITION SENSOR CONNEC- TOR
15. CONNECT BRAKE BOOSTER HOSE
16. CONNECT EVAP HOSE
17. CONNECT NO.2 WATER BYPASS HOSE
18. CONNECT VACUUM SENSING HOSE
19. CONNECT NO.1 PCV HOSE
20. INSTALL BOLT HOLDING HEATER INLET PIPE AND AIR INTAKE CHAMBER
Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)
21. INSTALL EGR VALVE AND VACUUM MODULATOR (See page EC−10 )
22. CONNECT THROTTLE CABLE
23. CONNECT ACCELERATOR CABLE
24. CONNECT CRUISE CONTROL ACTUATOR CABLE
25. CONNECT AIR CLEANER HOSE
26. CONNECT NO.2 PCV HOSE
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