isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Transmission Control Computer <--> [Control Module, A/T]|Specifications|Page 1711 > < Shift Solenoid, A/T|Specifications|Page 1707
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Transmission Control Computer: Specifications

ECT Computer Terminal Voltages

Terminal / 

Measuring Condition [1] .................................................................................................................................................................................  Voltage (V)

V+(9) - Vt-(11)

Ignition ON ...........................................................................................................................................................................................................  5.3 - 6.0

Vth(10) - Vt (11)

Fully open throttle valve .......................................................................................................................................................................................  0.6 - 1.6

Fully closed throttle valve ...............................................................................................................................................................................  4.4 - 5.6

SP1(21) - GND(18)

When meter cable turns slowly .......................................................................................................................................................  above 2 and below 5.4

SP2(22) - GND(18)

When vehicle stops (idling) ............................................................................................................................................................  above 2 and below 5.4

2(16) - GND(18)

Range 2 .....................................................................................................................................................................................................................  8 - 16
Other than Range 2 ...........................................................................................................................................................................................................  0

L(17) - GND(18)

Range L .....................................................................................................................................................................................................................  8 - 16
Other than Range L ..........................................................................................................................................................................................................  0

PWR(4) - GND(18)

Power Switch ON .....................................................................................................................................................................................................  8 - 16
Power Switch OFF ...........................................................................................................................................................................................................  0

OD1(20) - GND(18)

Coolant Switch ON (above 70°C) ...............................................................................................................................................................................  0 - 2
Coolant Switch OFF (below 70°C) ........................................................................................................................................................................  9.2 - 15

BK(15) - GND(18)

Depress brake ............................................................................................................................................................................................................  8 - 16
Release brake ...................................................................................................................................................................................................................  0

OD2(8) - GND(18)

O/D Switch ON ...........................................................................................................................................................................................................  0 - 2
O/D Switch OFF .....................................................................................................................................................................................................  10 - 16

L4(7) - GND(18)

Transfer Position 2H or 4H ....................................................................................................................................................................................  9.2 - 15
Transfer Posistion 4L ..................................................................................................................................................................................................  0 - 2

TH1+(5) - TH-(19)

Open between terminals ................................................................................................................................................................................................  6.1

TH2+(12) - TH-(19)

Open between terminals ................................................................................................................................................................................................  6.1

S1(1) - GND(18)

OFF (3rd of O/D) ..........................................................................................................................................................................................  0.007 - 0.017
ON (1st or 2nd) .......................................................................................................................................................................................................  10 - 16

S2(2) - GND(18)

OFF (1st of O/D) ..........................................................................................................................................................................................  0.007 - 0.017
ON (2nd or 3rd) ......................................................................................................................................................................................................  10 - 16

S3(3) - GND(18)

OFF (lock-up OFF) .......................................................................................................................................................................................  0.007 - 0.017
ON (lock-up ON) ....................................................................................................................................................................................................  10 - 16

Transmission Control Computer <--> [Control Module, A/T]|Specifications|Page 1711 > < Shift Solenoid, A/T|Specifications|Page 1707