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15-42
PTC Fuse and Relay
(13) PTC heater control
A. Overview
The supplementary electrical heater is installed in DI engine equipped vehicle as a basic equipment.
The PTC system is operated according to two temperature values measured at the coolant temperature
sensor and HFM sensor. This device is mounted in the heater air outlet and increase the temperature of
air to the passenger compartment. Because PTC system is heated by electrical power, high capacity
alternator is required. PTC does not operate during engine cranking, while the battery voltage is lower
than 11 V or during preheating process of glow plugs.
B. Components
HFM (intake air
temperature)
Coolant temperature
sensor
PTC relay 1
D20DTR ECU
PTC relay 2
PTC fuse 1, 2, 3, 40A
PTC heater
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15-46
(15) CDPF control
A. Overview
As the solution for environmental regulations and PM Particle Material) of diesel engine, the low
emission vehicle is getting popular. This vehicle is equipped with an extra filter to collect the soot and
burn it again so that the amount of PM in the exhaust gas passed through the DOC (Diesel Oxidation
Catalyst) is reduced. The CDPF (Catalyst & Diesel Particulate Filter) is an integrated filter including
DOC (Diesel Oxidation Catalyst) and DPF (Diesel Particulate Filter).
For details, refer to Chapter "CDPF".
B. Components
Oxygen sensorFront
EGT sensorCDPF
(DOC + DPF)Rear
EGT sensor
Differential pressure
sensorD20DTR ECUElectric throttle body
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15-48
Rear EGT sensor:
Measure DPF temp
Diff. pres. sensor:
Measure pressure
between front side and
rear side of CDPFElectronic throttle
body: Control intake
air mass
ECU (DCM 3.7)
Injector: Control post
injection
D. Operation process
When the differential pressure sensor detects the pressure difference between the front and the rear
side of CDPF, the sensor sends signal indicating the soot is accumulated and the post injection is
performed to raise the temperature of exhaust gas. The amount of fuel injected is determined
according to the temperature of exhaust gas detected by the rear temperature sensor. If the
tem
perature is below 600°C, the amount of fuel injected is increased to raise the temperature. If
the tem
perature is over 600°C, the amount of fuel injected is decreased or not controlled. When
the engine is running in low load range, the amount of post injection and the amount of intake air are
controlled. It is to raise the temperature by increasing the amount of fuel while decreasing the amount
of intake air.
Front EGT sensor:
Measure DOC temp
T-MAP sensor
Intake air
mass
Exceed PM
limitBooster
pressure/
temperaturePost injection
Control intake
air mass
Page 380 of 796
01-50000-00
No. FUNCTION No. FUNCTION
1 HFM sensor 12 Intake manifold
2 Intake air duct 13 Connecting rod
3 Resonance flap 14 Exhaust manifold
4 Cylinder head cover 15 Crankshaft
5 Exhaust camshaft 16 Engine mounting
6 Intake camshaft 17 Starter
7 Cylinder head 18 Crankcase
8 Spark plug connector 19 Oil pump sprocket
9 Valve tappe
t20 Oil strainer
10 Injector 21 Oil pan
11 Exhaust valve 22 Drain plug
Front View ▶
Page 418 of 796
01-58410-02
2. CHECKING CABLES AND WIRES
Check for loose connection or rust.
Check terminals and wires for corrosion due to electrolyte leakage.
Check terminals and wires for open circuit.
Check the wire insulation and coat for damage, cracks or deterioration.
Check if the conductive parts of the terminals do not contact with vehicle body or other metal
parts.
Check that the grounding part has continuity with mounting bolts and vehicle body.
Check that wires are properly routed.
Make sure that wires are securely fixed to avoid contact with sharp body parts and hightemperature
parts, such as the exhaust manifold and exhaust pipes.
The rotating parts, such as fan pulley and fan belt, perturbative parts and wiring should be
secured tightly at regular intervals.
Secure the wiring between the fixed parts, such as the vehicle body, and vibrating parts, such
as the engine, after slackening it slightly to prevent it from being damaged. -
-
-
-
-
-
-
-
-
Page 557 of 796
01-6
3. TIGHTENING TORQUE
Description Tightening Torque (Nm) Remark
Oil drain plug (oil pan) 14 Hexagon, 5 mm
Oil filler pipe (upper) 8 ~ 10 -
Oil filler pipe (lower) 8 ~ 10 -
Oil cooler pipe 30 ~ 38 -
Oil pan 8 T 30
Torque converter housing/oil pump 20 -
Transmission rear mounting bracket
(left/right)36 ~ 44 -
Transmission rear mounting bracket
(center)20 -
Torque converter mounting bolt 42 -
Converter housing/engine 75 ~ 90 -
Converter housing/transmission housing 20 T 45
Valve bod
y8T 30
Valve body side cover 4 T 30
Solenoid valve 8 -
12-point collar nut 200 12-point, 30 mm
B2 housing bolt 16 T 45
Selector lever unit mounting bolt 6 -
Page 562 of 796
01-113650-01
▶1st Gear (3.932)
Torque converter lockup clutch
Engine speed
Transmission, input shaft
1st gear ratio
2nd gear ratio 16.
A.
B.
C.
D. 3rd gear ratio
Mounting elements
Rear planetary gear set
Stator E.
F.
H.
L.Center planetary gear set
Impeller
Turbine wheel
Front planetary gear set M.
P.
T.
V.
Input shaft: Clockwise rotation
Front sun gear: Locked by F1 and B1, Planetary gear carrier: Rotation with reduced speed
Rear ring gear: Counterclockwise rotation
Rear sun gear: Locked by F2 and B2, Planetary gear carrier: Clockwise rotation with reduced
speed
Center ring gear: Clockwise rotation
Center sun gear: Locked by B2, Rotation with reduced speed
Output shaft: Clockwise rotation -
-
-
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2 Lockup clutch
1● ● ● ● ●
3) 3)
3) Overrun
Page 563 of 796
01-12
▶2nd Gear (2.408)
Torque converter lockup clutch
Engine speed
Transmission, input shaft
1st gear ratio 16.
A.
B.
C.2nd gear ratio
Mounting elements
Rear planetary gear set
Stator D.
E.
H.
L.Center planetary gear set
Impeller
Turbine wheel
Front planetary gear set M.
P.
T.
V.
Input shaft: Clockwise rotation
Sun gear and planetary gear carrier: Clockwise rotation by C1 activation
Rear ring gear: Clockwise rotation
Rear sun gear: Locked by F2 and B2, Planetary gear carrier: Rotation with reduced speed
Center ring gear: Clockwise rotation
Sun gear: Locked by B2, Planetary gear carrier: Rotation with reduced speed
Output shaft: Clockwise rotation -
-
-
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2
2 ● ● ● ●
3)
3) Overrun