Terminal TOYOTA LAND CRUISER 1996 J80 Workshop Manual

N09214
DLC3
DI−134
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
(9) After simulating the malfunction conditions, use the
TOYOTA hand−held tester diagnosis selector to
check the DTCs and freeze frame data, etc.
HINT:
Take care not to turn the ignition switch OFF. T urning the ignition
switch off switches the diagnosis system from check mode to
normal mode, so all DTCs, etc. are erased. (10) After checking the DTC, inspect the applicable cir-cuit.
(b) Clear the DTC. The following actions will erase the DTCs and freeze
frame data.Operating the OBD II scan tool (complying with SAE
J1978) or TOYOTA hand−held tester to erase the
codes (See the OBD II scan tool’s instruction book
for operating instructions.).
NOTICE:
If the T OYOTA hand−held tester switches the ECM from the
normal mode to the check mode or vice−versa, or if the
ignition switch is turned from ON to ACC or OFF during the
check mode, the DTCs and freezed frame data will be
erased.
(c) Check the DLC3. The vehicle’s ECM uses V.P.W. (V ariable Pulse Width) for
communication to comply with SAE J1850. The terminal
arrangement of DLC3 complies with SAE J1962 and
matches the V.P.W. format.
Terminal No.Connection/V oltage or ResistanceCondition
2Bus  Line/Pulse generationDuring communication
4Chassis Ground − Body/1 Ω or lessAlways
5Signal Ground − Body/1 Ω or lessAlways
16Battery Positive − Body/9 − 14 V or 1 Ω or lessAlways
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−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−135
1996 LAND CRUISER (RM451U)
HINT:
If your display shows ”UNABLE TO CONNECT TO VEHICLE”
when you have connected the cable of the OBD II scan tool or
TOYOTA hand−held tester to the DLC3, turned the ignition
switch ON and operated the scan tool, there is a problem on the
vehicle side or tool side.
If communication is normal when the tool is connected to
another vehicle, inspect the DLC3 on the original vehicle.
If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool’s instruction manual.
4. CHECK FOR INTERMITTENT PROBLEMS
TOYOTA hand−held tester only:
By putting the vehicle’s ECM in the check mode, 1 trip detection logic is possible instead of 2\
trip detection
logic and sensitivity to detect open circuits is increased. This makes it easier t\
o detect intermittent problems.
(1) Clear the DTC (See step 3).
(2) Set the check mode (See step 3).
(3) Do a simulation test (See page IN−18).
(4) Check the cnnector connection and terminal (See page IN−28).
(5) Visual check and contact pressure (See page IN−28).
(6) Handle the connector (See page IN−28).
5. ROAD TEST
NOTICE:
Perform the test at normal operating ATF temperature 50 − 80°C (122 − 176° F).
(a) D position test in NORM and PWR pattern positions. Shift into the D position and hold the accelerator pedal constant at the full\
throttle valve opening posi-
tion and check the following:
HINT:
When the 2nd start switch in on, there is no 1 → 2 up−shift and 2 →1 down−shift.
(1) 1 →2, 2 → 3 and 3 → O/D up−shift takes place, and shift point should conform to those shown
in the automatic shift schedule. Conduct a test under both Normal and Powe\
r patterns.
HINT:
There is no O/D up−shift or lock−up when the coolant temperature is below 55 °C (131°F ).
Evaluation:
If there is no 1 → 2 up−shift:
Shift solenoid valve No. 2 is stuck.
1−2 shift valve is stuck.
If there is no 2 → 3 up−shift:
Shift solenoid valve No. 1 is stuck.
2−3 shift valve is stuck.
If there is no 3 → O/D up−shift:
3−4 shift valve is stuck.
If the shift point is defective:
Throttle valve, 1−2 shift valve, 2−3 shift valve, 3−4 shift valve etc., are defective.
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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
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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
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Q07002
20°C and 110 °C
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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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Q07463
TransmissionFrom Cruise
Control ECU
W
R−YECM
1
2 B+
S1
B E4
R
S2
Shift Solenoid
Valve No. 2
B+
E4
EC2
EC2
Shift Solenoid
Valve No. 1
10
9
R
R−Y R−Y
1
2
Q07641
S2
S1
DI−158
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Measure resistance between terminal S1 or S2 of ECM and body ground.
PREPARATION:
Disconnect the connector from the ECM.
CHECK:
Measure the resistance between terminal S1 or S2 of the ECM
and body ground.
OK:
Resistance: 11 − 15 Ω
OK Check and replace ECM.
NG
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Q07312 Q07643D00082
S1
S2
S2
S1
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−159
1996 LAND CRUISER (RM451U)
2 Check harness and connector between ECM and automatic transmission sole-
noid connector.
PREPARATION:
Disconnect the solenoid connector from the automatic trans-
mission.
CHECK:
Check the harness and connector between terminals S1 or S2
of the ECM and S1 or S2 terminals of the solenoid connector.
OK:
There is no open and no short circuit.
NG Repair or replace harness or connector.
OK
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Q08224 Q08222D00083
DI−160
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
3 Check shift solenoid valve No. 1 or No. 2.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the solenoid connector.
(d) Remove the shift solenoid valve No. 1 or No. 2.
CHECK:
(a) Measure the resistance between solenoid connector and
body ground.
(b) Connect positive  lead to terminal of the solenoid con-
nector, negative  lead to the solenoid body.
OK:
(a) Resistance: 11 − 15 Ω
(b) The shift solenoid valve No. 1 or No. 2 makes an
operating noise.
NG Replace shift solenoid valve No. 1 or No. 2.
OK
Repair or replace solenoid wire.
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Q07647
SL
Q07649
Q07312D00088
SLSL
DI−164
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Measure resistance between terminal SL of ECM and body ground.
PREPARATION:
Disconnect the connector from the ECM.
CHECK:
Measure the resistance between terminal SL of the ECM and
body ground.
OK:
Resistance: 11 − 15 Ω
OK Check and replace ECM.
NG
2 Check harness and connector between ECM and automatic transmission sole-\
noid connector.
PREPARATION:
Disconnect the solenoid connector from the transmission.
CHECK:
Check the harness between terminal SL of the ECM and termi-
nal SL of the automatic transmission solenoid connector.
OK:
There is no open or short circuit.
NG Repair or replace harness or connector.
OK
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Q08224 Q08222D00083
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−165
1996 LAND CRUISER (RM451U)
3 Check shift solenoid valve SL.
PREPARATION:
(a) Jack−up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the shift solenoid valve SL connector.
(d) Remove the shift solenoid valve SL.
CHECK:
(a) Measure the resistance between the shift solenoid valve
SL connector terminal and its body ground.
(b) Connect positive  lead to terminal of the solenoid con-
nector, negative  lead to the solenoid body.
OK:
(a) Resistance: 11 − 15 Ω
(b) Shift solenoid valve SL makes operation noise.
NG Replace shift solenoid valve SL.
OK
Check and replace or repair solenoid wire.
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Q07352 AT5605D00084
Rotor
No. 2 Vehicle Speed Sensor Rotor
No. 2 Vehicle Speed Sensor
AT8761
5 V/div.
0 V
2 msec./div.
DI−166
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
DTC P1700 Speed Sensor No. 2 Circuit Malfunction
(No. 2 Vehicle Speed Sensor)
CIRCUIT DESCRIPTION
The No. 2 vehicle speed sensor detects the rotation speed of the transmissi\
on output shaft and sends sig-
nals to the ECM. The ECM determines the vehicle speed based on these signals\
.
An AC voltage is generated in the No. 2 vehicle speed sensor coil as the r\
otor mounted on the output shaft
rotates, and this voltage is sent to the ECM.
The gear shift point and lock −up timing are controlled by the ECM based on the signals from this vehic\
le
speed sensor and the throttle position sensor signal.
If the No. 2 vehicle speed sensor malfunctions, the ECM uses input signa\
ls from the No. 1 vehicle speed
sensor as a back −up signal.
DTC No.DTC Detecting ConditionTrouble Area
P1700
All conditions below are detected 500 times or more continu-
ously (2 trip detection logic)
(a) No signal from No. 2 vehicle speed sensor is input to ECM while 4 pulses of No. 1 vehicle speed sensor signal is sent
(b) Vehicle speed: 9 km/h (5.6 mph) or more for as least 4 sec.
(c) Park/neutral position switch: OFF (Other than P or N posi-
tion)
(d) Transfer position: Other than N position
 Open or short in No. 2 vehicle speed sensor circuit
 No. 2 vehicle speed sensor
 ECM
Reference:
Waveform between terminals SP2
+ and SP2− when the vehicle
speed is approx. 60 km/h (37 mph).
DI5KW−02
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