1998 TOYOTA LAND CRUISER compression ratio

I01450
Condition: Insufficient cooling
I01393
Condition : Does not cool AC-8
- AIR CONDITIONINGAIR CONDITIONING SYSTEM
2733 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(8) Expansion valve improperly.
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on both low
and high pressure sides

Frost or large amount of dew on
piping on low pressure side
Trouble in expansion valve

Excessive refrigerant in low
pressure piping

Expansion valve opened too
wide
Check expansion valve, and re-
place if defective
(9) Defective compression compressor.
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on low and
high pressure sides

Pressure too low on high pres-
sure side
Internal leak in compressor

Compression defective

Valve leaking or broken sliding
parts
Repair or replace compressor

A20646
20V
/Division Injector Signal Waveform
20V
/Division
GND
100 msec./Division (Idling)(Magnification)
GND
1 msec./Division (Idling)
Injection duration
DI-168
- DIAGNOSTICSENGINE
361 Author
: Date
:
2004 LAND CRUISER (RM1071U)DTC No.
DTC Detecting ConditionTrouble Area
P0300Misfiring of random cylinders is detected

Open or short in engine wire

Connector connection

Vacuum hose connection
P0301
P0302
P0303
P0304
P0305
P0306
P0307
P0308
Misfiring of each cylinder is detected

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Mass air flow meter

Engine coolant temperature sensor

Compression pressure

Valve clearance

Valve timing

PCV piping

ECM
HINT:
When several codes for a misfiring cylinder are recorded repeatedly but no random misfire code is recorded,
it indicates that the misfires have been detected and recorded at different times.
Reference: Inspection using the oscilloscope.
With the engine idling, check the waveform between terminals #1 to #8 and E01 of the ECM connectors.
HINT:
The correct waveform is as shown.

DI1L9-13
DI-48
- DIAGNOSTICSENGINE
241 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
Engine does not crank (Does not start)
16.Starter
17.Starter relay
18.Park/neutral position switchST-16
ST-18
DI-402
No initial combustion (Does not start)
1. ECM power source circuit
2. Fuel pump control circuit
3. Engine control module (ECM)DI-345
DI-350
IN-36
No complete combustion (Does not start)1. Fuel pump control circuitDI-350
Engine cranks normally but difficult to start
1. Starter signal circuit
2. Fuel pump control circuit
3. CompressionDI-336
DI-350
EM-3
Difficult to start with cold engine1. Starter signal circuit
2. Fuel pump control circuitDI-336
DI-350
Difficult to start with hot engine1. Starter signal circuit
2. Fuel pump control circuitDI-336
DI-350
High engine idle speed (Poor idling)1. A/C switch circuit
2. ECM power source circuit-
DI-345
Low engine idle speed (Poor idling)1. A/C switch circuit
2. Fuel pump control circuit-
DI-350
Rough idling (Poor idling)1. Compression
2. Fuel pump control circuitEM-3
DI-350
Hunting (Poor idling)1. ECM power source circuit
2. Fuel pump control circuitDI-345
DI-350
Hesitation/Poor acceleration (Poor driveability)1. Fuel pump control circuit
2. A/T faultyDI-350
DI-396
Surging (Poor driveability)1. Fuel pump control circuitDI-350
Engine stalls soon after starting1. Fuel pump control circuitDI-350
Engine stalls during A/C operation1. A/C switch circuit
2. Engine control module (ECM)-
IN-36
Unable to refuel/Difficult to refuel1. ORVR system-

PP1BM-01
PP-6
- PREPARATIONENGINE MECHANICAL
65 Author
: Date
:
2004 LAND CRUISER (RM1071U)
EQUIPMENT
Caliper gauge
CO/HC meter
Compression gauge
Connecting rod aligner
Cylinder gauge
Dial indicator
Dye penetrant
Engine tune-up tester
Groove cleaning tool
Heater
Magnetic finger
Micrometer
Pin hole grinder
OBD II scan tool
Piston ring compressor
Piston ring expander
Plastigage
Precision straight edge
Press
Soft brush
Ridge reamer
Solvent
Spring testerValve spring
Steel squareValve spring
Thermometer
Torque wrench
Valve seat cutter
V-block
Vernier calipers
Wire brushValve