Over drive TOYOTA LAND CRUISER 1996 J80 Owner's Manual

Q07467
Cruise Control ECUOD OD1B+
G−O
9 18ECM
E7
BE3840
Q07658 D00091
ON
(−) (+) OD1
DI−172
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
O/D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving with cruise control activated, in order to minimize gear shifting and provide\
smooth cruising on
an uphill, overdrive may be prohibited temporarily in some conditions.
The cruise control ECU sends O/D cut signals to the ECM as necessary and\
the ECM cancels overdrive
shifting until these signals are discontinued.
(For details, see the Cruise Control section, page DI−292)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminal OD1 of ECM and body ground.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal OD1 of the ECM and
body ground.
OK:
Voltage: 9 − 14 V
OK Proceed to next circuit inspection shown on problem symptoms table (See page DI−147 ).
NG
DI5L0−02
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BE3840
Q08230D00093
ON
OD2
DI−176
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
2 Check OVRDRIVE CUT SW2 signal.
When using TOYOTA hand −held tester:
PREPARATION:
(a) Remove the fuse box cover.
(b) Connect a TOYOTA hand−held tester to the DLC3.
(c) Turn the ignition switch ON and TOYOTA hand−held tes-
ter main switch ON.
CHECK:
Read the OVRDRIVE CUT SW2 signal on the TOYOTA hand −
held tester.
OK:
O/D Main SwitchOVRDRIVE CUT SW2 Signal
O/D ON (pushed in)OFF
O/D OFF (pushed out)ON
When not using TOYOTA hand −held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Check the voltage between terminal OD2 of the ECM and body
ground.
OK:
O/D Main SwitchVoltage
O/D ON9 − 14 V
O/D OFFBelow 3 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−147 ).
NG
3 Check harness and connector between O/D OFF indicator light and ECM (Se\
e page IN−28 ).
NG Repair or replace harness or connector.
OK
Check and replace ECM.
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I00494
Cruise Control ECUECT
22 9
15
9
E4S2
R−Y
ECM
E7
OD1
ODC17
18
G−R
G−O
C17
R−Y
R−Y
2 EC2 IH2
Ellectronically Con trolled
Transmission Solenoid
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
DI−319
1996 LAND CRUISER (RM451U)
Electronically Controlled Transmission Communication Circuit
CIRCUIT DESCRIPTION
When driving uphill under cruise control, in order to reduce shifting due to ON− OFF overdrive operation and
to provide smooth driving, when down shifting in the electronically controlled transmission occurs, a si\
gnal
to prevent upshift until the end of the up hill slope is sent from the cru\
ise control ECU to the electronically
controlled transmission.
Terminal ECT of the cruise control ECU detects the shift change signal (\
output to electronically controlled
transmission No. 2 solenoid) from the ECM.
If vehicle speed down, also when terminal ECT of the cruise control ECU receives down shifting signal, it
sends a signal from terminal OD to ECM to cut overdrive until the end of the uph\
ill slope, and the gear shifts
are reduced and gear shift points in the electronically controlled transmis\
sion are changed.
WIRING DIAGRAM
DI5OK−02
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AB0119I00012 I00025
ON
OD
(−) (+)
DI−320
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Check operation of overdrive.
PREPARATION:
Test drive after engine warms up.
CHECK:
Check that overdrive ON ↔ OFF occurs with operation of OD switch ON−OFF.
NG Check and repair electronically controlledtransmission (See page DI−129 ).
OK
2 Check voltage between terminal OD of harness side connector of cruise co\
ntrol ECU and body ground.
PREPARATION:
(a) Remove the ECU with connector still connected.
(b) Turn ignition switch ON.
(c) Disconnect the ECU connector.
CHECK:
Measure voltage between terminal OD of harness side connec-
tor of ECU and body ground.
OK:
Voltage: 10 − 14 V
NG Go to step 5.
OK
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EM1Q4−01
P05120A16078
1 Dot Mark
EM−4
−
ENGINE MECHANICAL VALVE CLEARANCE
507
Author: Date:
1996 LAND CRUISER (RM451U)
VALVE CLEARANCE
INSPECTION
HINT:
Inspect and adjust the valve clearance when the engine is cold.
1. DRAIN ENGINE COOLANT
2. REMOVE THROTTLE BODY (See page SF−45)
3. DISCONNECT ENGINE WIRE AND HEATER VALVE FROM COWL PANEL
(a) Remove the 2 bolts and disc onnect the ground strap and
engine wire.
(b) Remove the 2 bolts and disconnect the heater valve.
4. DISCONNECT HIGH −TENSION CORDS FROM SPARK
PLUGS (See page IG−1 )
5. REMOVE CYLINDER HEAD COVER
Remove the 13 bolts, cylinder head cover and gasket.
6. SET NO. 1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with the timing mark ”0” of the timing chain cover.
(b) Check that the timing marks (1 and 2 dots) of the camshaft
drive and driven gears are in straight line on the cylinder
head surface as shown in the illustration.If not, turn the
crankshaft 1 revolution (360 °) and align the marks as
above.
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EM0494
−
ENGINE MECHANICAL VALVE CLEARANCE
EM−7
510
Author: Date:
1996 LAND CRUISER (RM451U)
9. Rear valves of No. 6 cylinder
ADJUST VALVE CLEARANCE
(a) Remove the distributor (See page IG−10).
(b) Remove the camshafts (See page EM−28).
(c) Remove the adjusting shim with a small screwdriver.
(d) Determine the replacement adjusting shim size by follow- ing the Formula or Charts:
Using a micrometer, measure the thickness of the
removed shim.
Calculate the thickness of a new shim so that the
valve clearance comes within specified value.
T ....... Thickness of removed shim
A ....... Measured valve clearance
N ....... Thickness of new shim
Intake: N = T + (A − 0.20 mm (0.008 in.))
Exhaust: N = T + (A − 0.30 mm (0.012 in.))
Select a new shim with a thickness as close as pos-
sible to the calculated value.
HINT:
Shims are available in 17 sized in increments of 0.05 mm
(0.0020 in.), from 2.50 mm (0.0984 in.) to 3.30 mm (0.1299 in.).
(e) Place a new adjusting shim on the valve lifters.
(f) Install the camshafts (See page EM−54 ).
(g) Recheck the valve clearance.
(h) Install the distributor (See page IG−11 ).
10. REINSTALL CYLINDER HEAD COVER
(a) Install the gasket to the cylinder head cover.
(b) Install the cylinder head cover with the 13 bolts.
11. RECONNECT HIGH −TENSION CORDS TO SPARK
PLUGS (See page IG−1 )
12. RECONNECT HEA TER VALVE AND ENGINE WIRE TO
COWL PANEL
(a) Connect the heater valve with the 2 bolts.
(b) Connect the ground strap and engine wire with the 2 bolts.
13. REINSTALL THROTTLE BODY (See page SF−48 )
14. REFILL RADIATOR WITH ENGINE COOLANT
15. CHECK AND ADJUST IGNITION TIMING (See page EM−10 )
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EM1E9−01
−
ENGINE MECHANICAL TIMING CHAIN
EM−13
1996 LAND CRUISER (RM451U)
REMOVAL
1. DRAIN ENGINE OIL
2. DRAIN ENGINE COOLANT
3. REMOVE ENGINE UNDER COVER
4. REMOVE RADIATOR (See page CO−14 )
5. DISCONNECT A/C COMPRESSOR AND BRACKET
(a) Loosen the idler pulley nut and adjusting bolt, and remove
the drive belt.
(b) Remove the 4 mounting bolts, and disconnect the com- pressor from the bracket.
HINT:
Put aside the compressor, and suspend it.
(c) Remove the 5 bolts and A/C compressor bracket.
6. REMOVE RADIATOR PIPE
(a) Disconnect the No. 2 radiator hose from the water inlet.
(b) Remove the 2 nuts and radiator pipe.
7. REMOVE WATER PUMP
Remove the 4 bolts, 2 nuts, water pump and gasket.
8. REMOVE CYLINDER HEAD (See page EM−28 )
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−
ENGINE MECHANICAL TIMING CHAIN
EM−15
1996 LAND CRUISER (RM451U)
15. CHECK THRUST CLEARANCE OF OIL PUMP DRIVE
SHAFT GEAR
Using a dial indicator with lever type attachment, measure the
thrust clearance.
Standard thrust clearance:
0.040 − 0.160 mm (0.0016 − 0.0063 in.)
Maximum thrust clearance: 0.30 mm (0.0118 in.)
If the thrust clearance is greater than maximum, replace the oil
pump drive shaft gear and/or timing chain cover.
16. REMOVE DRIVE BELT IDLER PULLEY
Remove the bolt and idler pulley.
17. REMOVE TIMING CHAIN COVER
(a) Remove the 9 mounting bolts, 2 mounting nuts and drive belt adjusting bar.
(b) Remove the oil pump by prying the portions between the cylinder block and oil pump with a screwdriver.
NOTICE:
Be careful not to damage the contact surfaces of the cylin-
der block and oil pump.
(c) Remove the O−rings from the oil pump.
(d) Remove the gasket from the oil pump.
18. REMOVE TIMING CHAIN AND CAMSHAFT TIMING GEAR
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−
ENGINE MECHANICAL TIMING CHAIN
EM−23
1996 LAND CRUISER (RM451U)
15. INSTALL OIL LEVEL SENSOR
(a) Install a new gasket to the level sensor.
(b) Install the level sensor with the 4 bolts.
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)
16. CONNECT OIL COOLER PIPE BRACKET TO NO. 1 OIL
PA N
17. INSTALL CYLINDER HEAD (See page EM−54 )
NOTICE:
However, for the installation of the camshaft timing gear
and timing chain, follow the below procedure. Align the
blight link of the timing chain and camshaft timing gear
mark, and install them to the camshaft.
18. INSTALL WATER PUMP
Install a new gasket and water pump with the 4 bolts and 2 nuts.
Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
19. INSTALL RADIATOR PIPE
(a) Connect the No.2 radiator hose to the water inlet.
(b) Install the 2 nuts holding the radiator pipe to the No.1 oil
pan.
Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
20. INSTALL A/C COMPRESSOR AND BRACKET
(a) Install the A/C compressor bracket with the 5 bolts.
Torque: 37 N·m (375 kgf·cm, 27 ft·lbf)
(b) Install the A/C compressor with the 4 bolts. Torque: 25 N·m (250 kgf·cm, 18 ft·lbf)
(c) Install and adjust the drive belt (See page CH−2).
21. INSTALL RADIATOR (See page CO−16 )
22. FILL ENGINE WITH OIL
23. INSTALL ENGINE UNDER COVER
24. START ENGINE AND CHECK FOR LEAKS
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P08374A16075
1 Dot Mark
EM−32
−
ENGINE MECHANICAL CYLINDER HEAD
1996 LAND CRUISER (RM451U)
30. REMOVE CYLINDER HEAD COVER
Remove the 13 bolts, cylinder head cover and gasket.
31. REMOVE SPARK PLUGS
32. SET NO. 1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley and align its groove with the ”0”
mark on the timing chain cover.
(b) Check that the timing marks (1 and 2 dots) of the camshaft
drive and driven gears are in straight line on the cylinder
head surface as shown in the illustration.
If not, turn the crankshaft 1 revolution (360° ) and align the
marks as above.
33. REMOVE CHAIN TENSIONER
Remove the 2 nuts, chain tensioner and gasket.
34. REMOVE CAMSHAFT TIMING GEAR
(a) Remove the semi−circular plug.
(b) Place the matchmarks on the camshaft timing gear and timing chain.
(c) Hold the intake camshaft with a wrench, remove the bolt and distributor gear.
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