1996 TOYOTA LAND CRUISER Terminal

A00196
ONFC
High LowFPR
BE6653
P22901
P09401
−
DIAGNOSTICS ENGINE
DI−123
1996 LAND CRUISER (RM451U)
7 Check operation of fuel pump.
PREPARATION:
(a) Remove instrument panel speaker No.1 panel (See page
SF−65 ).
(b) Turn ignition switch ON.
CHECK:
(a) Connect terminal FC of ECM and body ground.
(b) Check operation of fuel pump when terminal FPR of ECM
is grounded and is not grounded.
OK:
There is pressure in the inlet hose.
HINT:
At this time, you will hear a fuel flowing noise.
FPR is grounded
(Low speed)FPR is not grounded (High speed)
NGNGGo to step 8
NGOKGo to step 9
OKNG
Repair or replace
harness or connecter between fuel pump
relay and fuel pump.
8 Check fuel pump (See page SF−6 ).
NG Repair or replace fuel pump.
OK
Check for open or short in harness and connector between EFI main relay (Mark\
ing: EFI) and cir-
cuit opening relay and fuel pump relay and fuel pump and body ground (See p\
age IN−28).
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A00198
ONFPU
(+)
(−)
BE6653
P24688
−
DIAGNOSTICS ENGINE
DI−127
1996 LAND CRUISER (RM451U)
3 Check for open and short in harness and connector between EFI main relay
(Marking: EFI) and ECM (See page IN−28).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN−28 ).
OBD II scan tool (excluding TOYOTA hand −held tester)
1 Check VSV for fuel pressure control (See page SF−59 ).
NG Replace VSV for fuel pressure control.
OK
2 Check voltage between terminal FPU of ECM connector and body ground.
PREPARATION:
(a) Remove instrument panel speaker No.1 panel (See page
SF−65 ).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminal FPU of ECM connector and
body ground.
OK:
Voltage: 9 − 14 V
NG Check for open and short in harness and con- nector between EFI main relay (Marking: EFI)
and ECM (See page IN−28 ).
OK
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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
−
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
−
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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