Engine no stop TOYOTA LAND CRUISER 1996 J80 User Guide

BR3295
Push RodStop Light Switch
Pedal Height
BR1CF−04
BR4980
A
BR0016
Pedal Freeplay
BR−6
−
BRAKE BRAKE PEDAL
988
Author: Date:
1996 LAND CRUISER (RM451U)
BRAKE PEDAL
ON−VEHICLE INSPECTION
1. CHECK PEDAL HEIGHT
Pedal height from dash panel:
167.5 − 177.5 mm (6.594 − 6.988 in.)
2. IF NECESSARY, ADJUST PEDAL HEIGHT
(a) Disconnect the connector from the stop light switch.
(b) Loosen the stop light switch lock nut and remove the stop
light switch.
(c) Loosen the push rod lock nut.
(d) Adjust the pedal height by turning the pedal push rod.
(e) Tighten the push rod lock nut. Torque: 25 N·m (260 kgf·cm, 19 ft·lbf)
(f) Install the stop light switch and turn it until it lightly con-
tacts the pedal stopper.
(g) Turn the stop light switch back one turn.
(h) Check the clearance (A) between the stop light switch and pedal.
Clearance: 0.5 − 2.4 mm (0.020 − 0.094 in.)
(i) Tighten the stop light switch lock nut.
(j) Connect the connector to the stop light switch.
(k) Check that the stop lights come on when the brake pedal
is depressed, and go off when the brake pedal is re-
leased.
(l) earance (A) between the stop light switch and the pedal
stopper has been adjusted correctly, the pedal freeplay
will meet the specifications.
3. CHECK PEDAL FREEPLAY
(a) Stop the engine and depress the brake pedal several times until there is no more vacuum left in the booster.
(b) Push in the pedal by hand until the beginning of the se- cond resistance is felt. Measure the distance.
Pedal freeplay: 3 − 6 mm (0.12 − 0.24 in.)
HINT:
The freeplay to the 1st resistance is due to the play between the
clevis and pin. This is magnified up to 3 − 6 mm (0.12 − 0.24 in.)
at the pedal.
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BR3297
Pedal Reserve Distancea
−
BRAKE BRAKE PEDAL
BR−7
989
Author: Date:
1996 LAND CRUISER (RM451U)
If incorrect, check the stop light switch clearance.
If the clearance is OK, then troubleshoot the brake system.
4. CHECK PEDAL RESERVE DISTANCE
Release the parking brake.
With the engine running, depress the pedal and measure
the pedal reserve distance, as shown.
Pedal reserve distance, ’a’, at 490 N (50 kgf, 110.2lbf):
More than 68 mm (2.68 in.)
If the reserve distance incorrect, troubleshoot the brake sys-
tem.
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BR1CN-01
BR2238
-
BRAKE BRAKE BOOSTER ASSEMBLY
BR-15
1996 LAND CRUISER (RM451U)
BRAKE BOOSTER ASSEMBLY
OPERATION
1. OPERATING CHECK
(a) Depress the brake pedal several times with the engine off
and check that there is no change in the pedal reserve
distance.
(b) Depress the brake pedal and start the engine. If the pedal
goes down slightly, operation is normal.
2. AIR TIGHTNESS CHECK
(a) Start the engine and stop it after 1 or 2 minutes. Depress the brake pedal several times slowly. If the pedal goes
down furthest the 1st time, but gradually rises after the
2nd or 3rd time, the booster is air tight.
(b) Depress the brake pedal while the engine is running, and
stop the engine with the pedal depressed. If there is no
change in the pedal reserve travel after holding the pedal
for 30 seconds, the booster is air tight.
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BR2237
BR1NM−01
BR2238
−
BRAKE BRAKE BOOSTER ASSEMBLY
BR−17
999
Author: Date:
1996 LAND CRUISER (RM451U)
BRAKE BOOSTER ASSEMBLY
OPERATION
1. OPERATING CHECK
(a) Depress the brake pedal several times with the engine off
and check that there is no change in the pedal reserve
distance.
(b) Depress the brake pedal and start the engine. If the pedal
goes down slightly, operation is normal.
2. AIR TIGHTNESS CHECK
(a) Start the engine and stop it after 1 or 2 minutes. Depress
the brake pedal several times slowly. If the pedal goes
down furthest the 1st time, but gradually rises after the
2nd or 3rd time, the booster is air tight.
(b) Depress the brake pedal while the engine is running, and
stop the engine with the pedal depressed. If there is no
change in the pedal reserve travel after holding the pedal
for 30 seconds, the booster is air tight.
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BR1334
R00326
BR−54
−
BRAKE ABS ACTUATOR
1036
Author: Date:
1996 LAND CRUISER (RM451U)
4. INSPECT BRAKE ACTUATOR OPERATION
(a) Start the engine, and run it at idle.
(b) Turn the selector switch of the actuator checker to
”FRONT RH” position.
(c) Push and hold in the SUB MOTOR switch for a few se- conds.
(d) Depress the brake pedal and hold it until the step (g) is
completed.
(e) Push the POWER switch, and check that the brake pedal
does not go down.
NOTICE:
Do not keep the POWER switch pushed down for more than
10 seconds.
(f) Release the switch, and check that the pedal goes down.
(g) Push and hold in the SUB MOTOR switch for a few se- conds, and check that the pedal returns.
(h) Release the brake pedal.
(i) Push and hold in the SUB MOTOR switch for a few se- conds.
(j) Depress the brake pedal and hold it for about 15 seconds.
As you hold the pedal down, push the SUB MOTOR
switch for a few seconds. Check that the brake pedal
does not pulsate.
(k) Release the brake pedal.
5. INSPECT FOR OTHER WHEELS
(a) Turn the selector switch to ”FRONT LH” position.
(b) Repeating (c) to (j) of the step 4, check the actuator opera-
tion similarly.
(c) Similarly, inspect ”REAR” position.
6. PUSH SUB MOTOR SWITCH
(a) Push and hold in the SUB MOTOR switch for a few se- conds.
(b) Stop the engine.
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N09214
DI−4
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
The diagnosis system operates in normal mode
during normal vehicle use. It also has a check mode
for technicians to simulate malfunction symptoms
and troubleshoot. Most DTC use 2 trip detection
logic* to prevent erroneous detection, and ensure
thorough malfunction detection. By switching the
ECM to check mode when troubleshooting, the
technician can cause the MIL to light up for a mal-
function that is only detected once or momentarily
(TOYOTA hand−held tester only) (See step 2).
*2 trip detection logic:
When a logic malfunction is first detected, the mal-
function is temporarily stored in the ECM memory.
If the same malfunction is detected again during the
second drive test, this second detection causes the
MIL to light up.
The 2 trip repeats the same mode a 2nd time (How-
ever, the IG switch must be turned OFF between the
1st trip and 2nd trip.).
Freeze frame data:
Freeze frame data records the engine condition
when a misfire (DTC P0300 − P0306) or fuel trim
malfunction (DTC P0171, P0172) or other malfunc-
tion (first malfunction only), is detected.
Because freeze frame data records the engine
conditions (fuel system, calculator load, engine
coolant temperature, fuel trim, engine speed, ve-
hicle speed, etc.) when the malfunction is detected,
when troubleshooting it is useful for determining
whether the vehicle was running or stopped, the en-
gine warmed up or not, the air− fuel ratio lean or rich,
etc. at the time of the malfunction.
Priorities for troubleshooting:
If troubleshooting priorities for multiple DTCs are given in the
applicable diagnostic chart, these should be followed.
If no instructions are given troubleshoot DTCs according to the
following priorities. (1) DTC other than fuel trim malfunction (DTC P0171,
P0172), EGR (DTC P0401, P0402), and misfire
(DTC P0300 − P0306).
(2) Fuel trim malfunction (DTC P0171, P0172), and EGR (DTC P0401, P0402).
(3) Misfire (DTC P0300 − P0306).
(b) 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.
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P04771
InsideOutside
DI−8
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
6. BASIC INSPECTION
When the malfunction code is not confirmed in the DTC check, troubleshooting\
should be performed in the
order for all possible circuits to be considered as the causes of the problem\
s. In many cases, by carrying
out the basic engine check shown in the following flow chart, the location \
causing the problem can be found
quickly and efficiently. Therefore, use of this check is essential in engine troubleshooting.
1 Is battery positive voltage 11 V or more when engine is stopped?
NO Charge or replace battery.
YES
2 Is engine cranked?
NO Proceed to page ST−16 , and continue to trouble-
shoot.
YES
3 Does engine start?
NO Go to step 7.
YES
4 Check air filter.
PREPARATION:
Remove air filter.
CHECK:
Visually check that the air cleaner element is not dirty or exces-
sive oily.
HINT:
If necessary, clean the element with compressed air. First blow
from inside thoroughly, then blow from outside of element.
NG Repair or replace
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−
DIAGNOSTICS ENGINE
DI−11
1996 LAND CRUISER (RM451U)
NG Proceed to page IG−1 and continue to trouble-
shoot.
OK
Proceed to matrix chart of problem symp-
toms on page DI−19.
7. ENGINE OPERATING CONDITION
NOTICE:
The values given below for ”Normal Condition” are representative valu\
es, so a vehicle may still be
normal even if its value varies from those listed here. So do not decide wheth\
er a part is faulty or
not solely according to the ”Normal Condition” here.
(a) CARB mandated signals.
TOYOTA hand−held tester displayMeasurement ItemNormal Condition*
FUEL SYS #1
Fuel System Bank 1
OPEN: Air− fuel ratio feedback stopped
CLOSED: Air− fuel ratio feedback operating
Idling after warming up: CLOSED
CALC LOAD
Calculator Load:
Current intake air volume as a proportion of max.
intake air volumeIdling: 13.8 − 19.3%
Racing without load (2,500 rpm): 17.6 − 25.2%
COOLANT TEMP.Engine Coolant Temp. Sensor ValueAfter warming up: 80 − 95° C (176 − 203°F)
SHORT FT #1Short−term Fuel Trim Bank 10 ± 20%
LONG FT #1Long−term Fuel Trim Bank 10 ± 20%
ENGINE SPDEngine SpeedIdling: 650 ± 50 rpm
VEHICLE SPDVehicle SpeedVehicle Stopped: 0 km/h (0 mph)
IGN ADVANCEIgnition Advance:
Ignition Timing of Cylinder No. 1Idling: BTDC 0 − 11°
INTAKE AIRIntake Air Temp. Sensor V alueEquivalent to Ambient Temp.
MAFAir Flow Rate Through Mass Air Flow Meter
Idling: 4.3 − 6.1 gm/sec.
Racing without load (2,500 rpm):
21.2 − 30.4 gm/sec.
THROTTLE POS
Voltage Output of Throttle Position Sensor
Calculated as a percentage:
0 V → 0%, 5 V →100%Throttle Fully Closed: 7 − 11 %
Throttle Fully Open: 65 − 75%
O2S B1, S1Voltage Output of Oxygen Sensor
Bank 1, Sensor 1Idling: 0.1 − 0.9 V
O2FT B1, S1Oxygen Sensor Fuel Trim Bank 1, Sensor 1
(Same as SHORT FT #1)0 ± 20%
O2S B1, S2Voltage Output of Oxygen Sensor
Bank 1, Sensor 2Driving (50 km/h, 31 mph): 0.1 − 0.9 V
∗: If no conditions are specifically stated for ”ldling”, it means \
the shift lever is at N or P position, the A/C switch
is OFF and all accessory switches are OFF.
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DI−12
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
(b) TOYOTA Enhanced Signals.
TOYOTA hand−held tester displayMeasurement ItemNormal Condition*
MISFIRE RPMEngine RPM for first misfire rangeMisfire 0: 0 rpm
MISFIRE LOADEngine load for first misfire rangeMisfire 0: 0 g/r
INJECTORFuel injection time for cylinder No.1Idling: 2.0 − 3.5 ms
IAC STEP POSIntake Air Control Valve step position
Opening position step motor type IAC valveIdling: 10 − 50 step
STARTER SIGStarter SignalCranking: ON
CTP SWClosed Throttle Position Switch SignalThrottle Fully Closed: ON
A/C SIGA/C Switch SignalA/C ON: ON
PNP SWPark/Neutral Position Switch SignalP or N Position: ON
STOP LIGHT SWStop Light Switch SignalStop light switch ON: ON
FC IDLFuel Cut Idle: Fuel cut when throttle valve fully
closed, during decelerationFuel cut operating: ON
FC TAUFuel Cut TAU: Fuel cut during very light loadFuel cut operating: ON
CYL#1 − CYL#6Ratio of revolution variation for each cylinder
when variation is large0%
IGNITIONIgnition rate for all cylinders every 1,000 revolu-
tions0 − 3,000 rpm
EGRT GASEGR Gas Temp. Sensor V alueEGR not operating: Temp. between intake air
temp. and engine coolant temp.
EGR SYSTEMEGR System Operating ConditionIdling: OFF
FUEL PRES UP VSVFuel Pressure Up VSV SignalHigh temp. restarting: ON
FUEL PUMPFuel Pump SignalIdling: ON
TOTAL FT B1Total Fuel Trim Bank 1: Average value for fuel
trim system of bank 1Idling: 0.8 − 1.2 V
O2 LR B1, S1
Oxygen Sensor Lean Rich Bank 1, Sensor 1
Response time for oxygen sensor output to
switch from lean to rich
Idling after warmed up: 0 − 1,000 msec.
O2 RL B1, S1
Oxygen Sensor Rich Lean Bank 1, Sensor 1
Response time for oxygen sensor output to
switch from rich to lean
Idling after warmed up: 0 − 1,000 msec.
∗: If no conditions are specifically stated for ”ldling”, it means t\
he shift lever is at N or P position, the A/C switch
is OFF and all accessory switches are OFF.
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P20769
(43 − 56 mph)
Vehicle Speed
70 − 90 km/h
Idling
IG SW OFF (1)(2) (3)
(4) (6)
(5)
Warm up 3 − 5 min. 2 min.
3 − 5 min.2 min.(7)
Time
DI−70
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
SYSTEM CHECK DRIVING PATTERN
(1) Connect the OBD II scan tool or TOYOTA hand −held tester to the DLC3.
(2) Start and warm up the engine with all accessories switched OFF.
(3) Run the vehicle at 70 − 90 km/h (43 − 56 mph) for 3 min. or more.
(4) Idle the engine for about 2 min.
(5) Stop at safe place and turn the ignition switch OFF.
(6) Start the engine and do steps (3) and (4) again.
(7) Check the ”READINESS TESTS” mode on the OBD II scan tool or\
TOYOTA hand−held tester.
If ”COMPL” is displayed and the MIL does not light up, the system \
is normal.
If ”INCMPL” is displayed and the MIL does not light up, run the ve\
hicle again and check it.
HINT:
”INCMPL” is displayed when either condition (a) or (b) exists.\
(a) The system check is incomplete.
(b) There is a malfunction in the system.
If there is a malfunction in the system, the MIL will light up after ste\
ps (2) to (6) above are done.
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