Isuzu N-Series. Service manual — part 890
Transmission Control System (Smoother) 7A-15
Ground Distributions
0.5 BLK
2 BLK
0.3 BLK
PT
O Switch (B-417-3)
Smoother Emergency Relay (X-14-2)
Smoother Emergency Relay (X-14-5)
PT
O Switch
DLC (B-79-4)
Change Lever Unit
Power
Distribution
Battery
B-7
0.5 BLK
Shift Position Indicator Back Lamp
15
1.25
BLK
0.3 BLK
3
BLK
P-5
0.5 BLK
Headlight Bracket
2
BLK
3
BLK
Emergency Shift Switch
0.5 BLK
0.5 BLK
0.5 BLK
B-1
Frame
2 BLK
DLC (B-79-5)
TCM (B-426-8)
TCM (B-426-17)
TCM (B-426-12)
TCM (B-426-4)
0.5 BLK
0.5 BLK
1.25 BLK
1.25 BLK
0.5 BLK
0.5 BLK
TCM (B-428-15)
0.5 BLK
Starter Cut Relay
2
BLK
2
BLK
J-9
Frame
TCM (B-425-2)
TCM (B-425-7)
1-3-5 Shift Solenoid
2-4-6-R Shift Solenoid
Select Solenoid
1.25 BLK
1.25 BLK
1.25 BLK
2 BLK
2 BLK
2 BLK
13
1
1
6
7
8
TCM (B-428-7)
1.25 BLK
TCM (B-425-6)
1.25 BLK
TCM (B-425-1)
1.25 BLK
1.25 BLK
1.25 BLK
1.25 BLK
1.25 BLK
1.25 BLK
H-1
19
H-1
19
H-1
18
H-17
H-17
H-17
7
1
W/S-B
J/C-D
W/S-E
W/S-D
W/S-C
2
BLK
USW
JOINT1
USW JOINT2
0.5 BLK
Heater Relay
Heater &
A/C Relay
Key On Relay
B-7
0.5 BLK
Engine W
arm up Switch (B-31-1)
0.5 BLK
0.5 BLK
Headlight Bracket
2
BLK
3
BLK
V
ehicle Speed Sensor (VSS)
Meter (B-55-7)
0.5 BLK
0.5 BLK
0.5 BLK
ECM (J-191-4)
HBB Level Switch
0.3 YEL/RED
Meter (B-55-10)
0.3
YEL/
RED
0.5 BLK
ECM (J-191-3)
ECM (J-191-1)
ECM (J-191-62)
ECM (J-191-43)
ECM (J-191-81)
1.25 BLK
1.25 BLK
1.25 BLK
0.75 BLK
0.75 BLK
0.5 BLK
0.5 BLK
ECM Main Relay
Condenser Fan Relay
0.85 BLK
2
BLK
Marker Light Relay
0.5 BLK
2
BLK
Fuel
T
ank
Unit
0.3
YEL/
RED
H-5
19
PT
O Switch
Engine W
arm up Switch (B-31-5)
3
BLK
3
BLK
3
BLK
2
BLK
0.85
BLK
0.5 BLK
6
1
USW JOINT3
W/S-F
W/S-E
J/C-D
N7A2114E
7A-16 Transmission Control System (Smoother)
Component Locator
Transmission Controls Component Views
Transmission
Legend
1. Gearshift Control Box
7. Select Solenoid Valve
2. Gear Shift Position Sensor
8. 1-3-5 Shift Solenoid Valve
3. Neutral Switch
9. 2-4-6-R Shift Solenoid Valve
4. Gear Select Position Sensor
10. Turbine Speed Sensor
5. Vehicle Speed Sensor
11. Input Shaft Speed Sensor
6. Reverse Switch
6
4
1
5
3
2
7
10
8
11
9
N7A2036E
Transmission Control System (Smoother) 7A-17
Cross Section
Oil Pump Assembly
Legend
1. Lock Up Clutch
5. Gearshift Control Box
2. Fluid Coupling
6. Brake Band
3. Oil Pump
7. Flywheel Housing
4. Gearshift Clutch
8. Flexible Plate
8
1
2
3
4
5
7
6
N7A2037E
N7A2038E
7A-18 Transmission Control System (Smoother)
Cab
Legend
1. Oil Pump
6. Transmission Fluid Temperature (TFT) Sensor
2. Gearshift Clutch Spool Valve
7. Relief Valve
3. Lockup Clutch Spool Valve
8. Gearshift Clutch Solenoid Valve
4. Lock Up Clutch Solenoid Valve
9. Accumulator
5. Bypass Valve
Legend
1. Gear Position Indicator
4. 1st Gear Start Indicator Lamp
2. Transmission Warning Lamp
5. Half-Clutch Adjustment Switch
3. Economy Mode Indicator Lamp
6. Reset Switch
#
$
"
!
N7A2039E
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