ENGINE COOLING 6B – 7
THERMOSTAT
REMOVAL
1. Disconnect battery ground cable.
2. Drain coolant from the radiator and engine.
3. Thermostat housing
1) Remove mounting bolt and remove thermostat
housing together with radiator hose.
4. Gasket
5. Thermostat
INSPECTION
Make necessary repair and parts replacement if
excessive wear or damage is found during inspection.
Submerge the thermostat assembly in the water.
Place wooden blocks on the bottom of the water
container.
Do not heat the thermostat directly.
Gradually increase the water temperature. Stir the
water so that the entire water is the same temperature.
1) Make sure that valve begins to open at the
specified temperature.
Valve Opening Temperature: 85°C (185°F)
2) Make sure that valve opens fully at the specified
temperature.
Valve Full Open Temperature: 100°C (212°F)
1
2
3
4
Legend
(1) Bolt
(2) Thermostat Housing
(3) Thermostat
(4) Intake Manifold
035RW002
031RS003
6B – 8 ENGINE COOLING
INSTALLATION
1. Thermostat
1) The jiggle valve of the thermostat must face the
cylinder head side.
2. Gasket
3. Install thermostat housing and tighten bolt to the
specified torque.
Torque: 20 Nꞏm (2.0 kgꞏm/14.5 lb ft)
4. Reconnect water hose
1) Fill coolant to full level.
2) Reconnect battery ground cable.
5. Start the engine check for coolant leakage.
ENGINE COOLING 6B – 9
RADIATOR
REMOVAL
1. Disconnect battery ground cable
2. Loosen drain plug to drain coolant.
3. Radiator Hose
1) Disconnect lower hose and upper hose from the
engine.
4. Fan Guide
1) Remove clips on both sides and the bottom lock.
5. Reservoir Tank Hose
1) Disconnect the hose from radiator.
6. Bracket
7. Radiator Assembly
1) Remove the radiator assembly upward by the
hoses taking care not to damage the radiator
core by the fan blade.
2) Remove rubber cushions on both sides of the
bottom.
INSPECTION
Radiator Cap
1) Measure the valve opening pressure with the
radiator cap tester. Replace the radiator cap if it
exceeds the standard.
Valve opening pressure: 93.2 – 122.7 kPa
(0.95 – 1.25 kg/cm
2/
13.5 – 17.8 psi)
Check the condition of the negative pressure valve in
the center of the valve seat side of the cap. If the valve
seat does not move smoothly due to rust or dust, clean
and replace the radiator cap.Radiator Core
1) Deformed radiator fins could reduce radiation
effects, resulting in overheating. Straighten the fins.
In such a case, take care not to damage the fin
roots.
2) Remove dust and other foreign materials.
Flushing the Radiator
1) Wash the inside of radiator and the coolant
passage with water and a neutral detergent.
Remove all scales and rust.
110RW017
110RS006
6B – 10 ENGINE COOLING
Checking for Coolant Leakage
1) Check the cooling system for leakage with the
radiator cap tester by applying 196.0 kPa (28.4 psi)
air pressure from filler neck to inside the radiator.
INSTALLATION
1. Radiator Assembly
1) Install rubber cushions on both sides of radiator
bottom.
2) Install radiator assembly with hose, taking care
not to damage the radiator core by a fan blade.
2. Bracket
1) Support the radiator upper tank with the bracket
and fix the radiator.
3. Reserve Tank Hose
4. Fan Guide, Lower
5. Radiator Hose
1) Connect inlet hose and outlet hose to the
engine.
2) Connect battery ground cable.
3) Pour coolant up to filler neck of radiator, and up
to MAX mark of reserve tank.
4) Start engine to warm up, and check for coolant
level. Replenish coolant if it does not reach the
radiator filler neck, and tighten the cap
completely.
110RS005
012RW080
6C – 6 ENGINE FUEL
FUEL FILTER
Legend
(1) Priming Pump
(2) Fuel Filter Cartridge
A cartridge type fuel filter is used along with the piston
type fuel pump on the high pressure oil pump.
The fuel filter removes foreign material from the fuel
before it reaches the fuel pump.
A diaphragm type priming pump is installed at the top of
the fuel filter. It is used during the air bleeding
procedures.
INJECTOR ASSEMBLY
Legend
(1) Oil Passage
(2) Fuel Passage
1. Construction of Fuel Injector
The fuel injector is comprised of the solenoid
section, hydraulic line, and fuel line. Fuel injection is
controlled by the continuity time signal and
continuity start timing signal sent by the ECM
(Electronic Control Module) to the solenoid.
2. Working of Fuel Injector
1) The ECM detects the working of the engine from
its input signals, such as engine speed
accelerator throttle opening, and engine coolant
temperature, sending the optimal signals to the
solenoid.
1
2
041RW017
1
2
055RW018
ENGINE ELECTRICAL 6D – 23
QOS4 PREHEATING SYSTEM
GENERAL DESCRIPTION
QOS4 preheating system features a quick-on glow plug
with thermometer control of the glowing time and the
afterglow time function.
The system consists of the ECM, indicator lamp, ECT
sensor, vehicle speed sensor, relay and temperature
self-control type glow plugs.With the employment of the ECT sensor, the glow time
changes according to the engine coolant temperature,
thus allowing optimum starting conditions to be
obtained.
The after glow time function is controlled by ECM.
NOTE:
Refer to DTC P0380 and P0381 of 6E section.
SYSTEM DIAGRAM
+
-KEY
50A
ECM
50A
GLOW
50A
2
WHT/
RED
0.5
BLK/
BLU
ECM J1-15 3
WHT/
RED
3
RED/
BLKMAIN
80A
8BLK/RED
Glow
Relay
GLOW PLUG 4
BATTHeater & A/C
Relay
060RW132
6E–2
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Circuit Description 6E–56. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–56. . . . . . .
Conditions for Clearing the MIL/DTC 6E–56. . . . .
Diagnostic Aids 6E–56. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0108
(Flash DTC 34)
MAP Sensor Circuit High Voltage 6E–58. . . . . . . . .
Circuit Description 6E–58. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–58. . . . . . .
Conditions for Clearing the MIL/DTC 6E–58. . . . .
Diagnostic Aids 6E–58. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0112
(Flash DTC 23) IAT Sensor Circuit Low
Voltage 6E–60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–60. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–60. . . . . . .
Conditions for Clearing the MIL/DTC 6E–60. . . . .
Diagnostic Aids 6E–60. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–61. . . . . . . . . . . . . . . . . . . . . . .
Intake Air Temperature Sensor 6E–61. . . . . . . . . .
Diagnostic Trouble Code (DTC) P0113
(Flash DTC 23) IAT Sensor Circuit High
Voltage 6E–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–62. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–62. . . . . . .
Conditions for Clearing the MIL/DTC 6E–62. . . . .
Diagnostic Aids 6E–62. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–63. . . . . . . . . . . . . . . . . . . . . . .
Manifold Air Temperature Sensor 6E–63. . . . . . . .
Diagnostic Trouble Code (DTC) P0117
(Flash DTC 14) ECT Sensor Low Voltage 6E–65.
Circuit Description 6E–65. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–65. . . . . . .
Conditions for Clearing the MIL/DTC 6E–65. . . . .
Diagnostic Aids 6E–65. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–65. . . . . . . . . . . . . . . . . . . . . . .
Engine Coolant Temperature Sensor 6E–66. . . . .
Diagnostic Trouble Code (DTC) P0118
(Flash DTC 14) ECT Sensor High Voltage 6E–67.
Circuit Description 6E–67. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–67. . . . . . .
Conditions for Clearing the MIL/DTC 6E–67. . . . .
Diagnostic Aids 6E–67. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–68. . . . . . . . . . . . . . . . . . . . . . .
Engine Coolant Temperature Sensor 6E–68. . . . .
Diagnostic Trouble Code (DTC) P0121
(Flash DTC 33) AP Sensor Rationality 6E–70. . . . .
Circuit Description 6E–70. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–70. . . . . . .
Conditions for Clearing the MIL/DTC 6E–70. . . . .
Diagnostic Aids 6E–70. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0122
(Flash DTC 21) AP Sensor Low Voltage 6E–72. . .
Circuit Description 6E–72. . . . . . . . . . . . . . . . . . . . . Action Taken When the DTC Sets 6E–72. . . . . . .
Conditions for Clearing the MIL/DTC 6E–72. . . . .
Diagnostic Aids 6E–72. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0123
(Flash DTC 21) AP Sensor High Voltage 6E–75. . .
Circuit Description 6E–75. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–75. . . . . . .
Conditions for Clearing the MIL/DTC 6E–75. . . . .
Diagnostic Aids 6E–75. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–75. . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0182
(Flash DTC 15) FT Sensor Low Voltage 6E–78. . .
Circuit Description 6E–78. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–78. . . . . . .
Conditions for Clearing the MIL/DTC 6E–78. . . . .
Diagnostic Aids 6E–78. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–78. . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0183
(Flash DTC 15) FT Sensor High Voltage 6E–80. . .
Circuit Description 6E–80. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–80. . . . . . .
Conditions for Clearing the MIL/DTC 6E–80. . . . .
Diagnostic Aids 6E–80. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–80. . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0192
(Flash DTC 63) Rail Pressure Sensor Low
Voltage 6E–82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–82. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–82. . . . . . .
Conditions for Clearing the MIL/DTC 6E–82. . . . .
Diagnostic Aids 6E–82. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0193
(Flash DTC 63) Rail Pressure Sensor
High Voltage 6E–84. . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–84. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–84. . . . . . .
Conditions for Clearing the MIL/DTC 6E–84. . . . .
Diagnostic Aids 6E–84. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P1193
(Flash DTC 64) RPCV Circuit Open/Short 6E–86. .
Circuit Description 6E–86. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–86. . . . . . .
Conditions for Clearing the MIL/DTC 6E–86. . . . .
Diagnostic Aids 6E–86. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P1194
(Flash DTC 61) Rail Pressure System
Low Voltage 6E–88. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–88. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–88. . . . . . .
Conditions for Clearing the MIL/DTC 6E–88. . . . .
Diagnostic Aids 6E–88. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P1195
(Flash DTC 61) Rail Pressure System
High Voltage 6E–90. . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–90. . . . . . . . . . . . . . . . . . . . .
6E–3 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Action Taken When the DTC Sets 6E–90. . . . . . .
Conditions for Clearing the MIL/DTC 6E–90. . . . .
Diagnostic Aids 6E–90. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P1196
(Flash DTC 62) Rail Pressure System
High Warning 6E–92. . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–93. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–93. . . . . . .
Conditions for Clearing the MIL/DTC 6E–93. . . . .
Diagnostic Aids 6E–93. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–93. . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0197
(Flash DTC 16) Oil Temp Sensor Low
Voltage 6E–94. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–94. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–94. . . . . . .
Conditions for Clearing the MIL/DTC 6E–94. . . . .
Diagnostic Aids 6E–94. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–95. . . . . . . . . . . . . . . . . . . . . . .
Engine Oil Temperature Sensor 6E–95. . . . . . . . .
Diagnostic Trouble Code (DTC) P0198
(Flash DTC 16) Oil Temp Sensor High
Voltage 6E–96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–96. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–96. . . . . . .
Conditions for Clearing the MIL/DTC 6E–96. . . . .
Diagnostic Aids 6E–96. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–97. . . . . . . . . . . . . . . . . . . . . . .
Engine Oil Temperature Sensor 6E–97. . . . . . . . .
Diagnostic Trouble Code (DTC) P0201
(Flash DTC 51) Injector # 1 Circuit Fault 6E–99. . .
Circuit Description 6E–99. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–99. . . . . . .
Conditions for Clearing the MIL/DTC 6E–99. . . . .
Diagnostic Aids 6E–99. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–99. . . . . . . . . . . . . . . . . . . . . . .
Injector Test 6E–99. . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0202
(Flash DTC 52) Injector # 2 Circuit Fault 6E–101. . .
Circuit Description 6E–101. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–101. . . . . . .
Conditions for Clearing the MIL/DTC 6E–101. . . . .
Diagnostic Aids 6E–101. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–101. . . . . . . . . . . . . . . . . . . . . . .
Injector Test 6E–101. . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0203
(Flash DTC 52) Injector # 3 Circuit Fault 6E–103. . .
Circuit Description 6E–103. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–103. . . . . . .
Conditions for Clearing the MIL/DTC 6E–103. . . . .
Diagnostic Aids 6E–103. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–103. . . . . . . . . . . . . . . . . . . . . . .
Injector Test 6E–103. . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Trouble Code (DTC) P0204
(Flash DTC 54) Injector # 4 Circuit Fault 6E–105
. . .
Circuit Description 6E–105. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–105. . . . . . .
Conditions for Clearing the MIL/DTC 6E–105. . . . .
Diagnostic Aids 6E–105. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–105. . . . . . . . . . . . . . . . . . . . . . .
Injector Test 6E–105. . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0217
(Flash DTC 22) High Coolant Temp Waring 6E–107
Circuit Description 6E–107. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–107. . . . . . .
Conditions for Clearing the MIL/DTC 6E–107. . . . .
Diagnostic Aids 6E–107. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–107. . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P1217
(Flash DTC 36) High Oil Temp Warning 6E–109. . . .
Circuit Description 6E–109. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–109. . . . . . .
Conditions for Clearing the MIL/DTC 6E–109. . . . .
Diagnostic Aids 6E–109. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0219
(Flash DTC 11) Engine Over Speed Warning 6E–111
Circuit Description 6E–111. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–111. . . . . . .
Conditions for Clearing the MIL/DTC 6E–111. . . . .
Diagnostic Aids 6E–111. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0336
(Flash DTC 43) CKP (Crank Position)
Sensor Out of Synchro 6E–114. . . . . . . . . . . . . . . . . .
Circuit Description 6E–114. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–114. . . . . . .
Conditions for Clearing the MIL/DTC 6E–114. . . . .
Diagnostic Aids 6E–114. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0337
(Flash DTC 43) CKP (Crank Position)
Sensor No Signal 6E–116. . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–116. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–116. . . . . . .
Conditions for Clearing the MIL/DTC 6E–116. . . . .
Diagnostic Aids 6E–116. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0341
(Flash DTC 41) CMP (Cam Position)
Sensor Out of Synchro 6E–119. . . . . . . . . . . . . . . . . .
Circuit Description 6E–119. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–119. . . . . . .
Conditions for Clearing the MIL/DTC 6E–119. . . . .
Diagnostic Aids 6E–119. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 6E–119. . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) P0342
(Flash DTC 41) CMP (Cam Position)
Sensor No Signal 6E–122. . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–122. . . . . . . . . . . . . . . . . . . . .
Action Taken When the DTC Sets 6E–122. . . . . . .
Conditions for Clearing the MIL/DTC 6E–122. . . . .