Isuzu KB P190. Manual - part 1105

7A2-136   TRANSMISSION CONTROL SYSTEM (JR405E)

Reference Wave form 

Engine speed signal

• Measurement terminal: 7 of C-94 (+) & 5 of C-95 (-

)

• Measurement scale: 5 volts/div & 10 ms/div

• Measurement condition: Engine run at 2000 RPM

Vehicle speed signal

• Measurement terminal: 10 of C-94 (+) & 5 of C-95

(-)

• Measurement scale: 5 volts/div & 50 ms/div

• Measurement condition: Vehicle run at 20 km/h (12

MPH)

19 of C-95

RED/ YEL

R range switch signal

19 of C-95

Ground

R range

Nearly 12 volts

Other than R range

Less than 2 volts

20 of C-95

WHT/ BLK

High clutch TFP switch 

signal

20 of C-95 

(back probe)

Ground

3rd or 4th gear

Less than 2 volts

Other than 3rd to 4th 

gear

Nearly 12 volts

21 of C-95

PNK/ BLU

L range switch signal

21 of C-95

Ground

L range

Nearly 12 volts

Other than L range

Less than 2 volts

22 of C-95

GRY/ RED

Ground return

22 of C-95

Ground

Ignition OFF

Continuity

23 of C-95

VIO

PC solenoid control

23 of C-95 

(back probe)

5 of C-95 

(back 

probe)

P or N rage

Nearly 12 volts

D range

Less than 2 volts

24 of C-95

WHT

Ignition voltage

24 of C-95

Ground

Ignition switch ON

Nearly 12 volts

Pin No.

Wire color

Pin function

DMM (+)

DMM (-)

Test condition

Standard value

TRANSMISSION CONTROL SYSTEM (JR405E)   7A2-137

Input shaft speed (ISS) sensor signal

• Measurement terminal: 3 of C-95 (+) & 5 of C-95 (-

)

• Measurement scale: 5 volts/div & 500 micro sec./

div

• Measurement condition: Vehicle run at 20 km/h (12

MPH) in L range with 1st gear 

Output shaft speed (OSS) sensor signal 

• Measurement terminal: 13 of C-95 (+) & 5 of C-95

(-)

• Measurement scale: 5 volts/div & 5 ms/div

• Measurement condition: Vehicle run at 20 km/h (12

MPH) in L range with 1st gear 

Low & reverse brake solenoid valve control signal

• Measurement terminal: 6 of C-95 (+) & 22 of C-95

(-)

• Measurement scale: 5 volts/div & 10 ms/div

• Measurement condition: P or N range

2-4 brake solenoid valve control signal

• Measurement terminal: 7 of C-95 (+) & 22 of C-95

(-)

• Measurement scale: 5 volts/div & 10 ms/div

• Measurement condition: P or N range

0V 

0V 

  0V 

0V

7A2-138   TRANSMISSION CONTROL SYSTEM (JR405E)

High clutch solenoid valve control signal

• Measurement terminal: 8 of C-95 (+) & 22 of C-95

(-)

• Measurement scale: 5 volts/div & 10 ms/div

• Measurement condition: P or N range

Low clutch solenoid valve control signal

• Measurement terminal: 9 of C-95 (+) & 22 of C-95

(-)

• Measurement scale: 5 volts/div & 10 ms/div

• Measurement condition: D range with 4th gear

Torque converter clutch (TCC) solenoid valve
control signal

• Measurement terminal: 17 of C-95 (+) & 5 of C-95

(-)

• Measurement scale: 10 volts/div & 5 ms/div

• Measurement condition: TCC is commanded OFF

Torque converter clutch (TCC) solenoid valve
control signal

• Measurement terminal: 17 of C-95 (+) & 5 of C-95

(-)

• Measurement scale: 10 volts/div & 5 ms/div

• Measurement condition: TCC is commanded ON

0V 

0V

0V

TRANSMISSION CONTROL SYSTEM (JR405E)   7A2-139

Repair Instructions

Transmission Controls Module (TCM) Replacement

Description

The following A - C steps provide an overview
procedure to replace and reprogram a TCM. Each A -C
steps is explained further in this section.
A. Replace the old TCM with the new TCM.
B. Program the latest software and calibrations into the
new TCM using the Service Programming System
(SPS) if released. If not released, do not perform this
and skip to Step C.
C. Program the vehicle identification number (VIN) into
the TCM. 

A. Removal and Installation 

Removal Procedure

1. Disconnect the negative battery cable.

2. Disconnect the TCM harness connectors (1).

3. Loosen nuts (2) and remove the TCM (3) from the

bracket (4). 

Installation Procedure

Follow the removal steps in the reverse order. Be sure
that the connectors are securely fastened.

B. Programming Software and Calibrations

Program the latest software/ calibrations if released.
Refer to Service Programming System (SPS)
Description and SPS (Remote Procedure) or SPS
(Pass-Thru Procedure) in this section. If not released,
do not perform this and skip to Step C.

C. Programming Vehicle Identification Number
(VIN)

Notice: If you have performed SPS in the previous
step, VIN has prgrommaned already. Programming VIN
is not necessary in this step.

1. Install a scan tool.

2. Turn ON the ignition, with the engine OFF.

3. Select Diagnostics > appropriate vehicle

identification > AT JR405E > Programming >
Program VIN.

4. If you installed a new, skip to step 8. If you installed

a reused TCM from another vehicle or incorrect
VIN is programmed before, the TCM might be
locked already. In order to get programming
approval, the on-screen displays a message to
user. Get programming approval from the TIS
2000 using the following procedure: 

a. Connect a scan tool to the terminal that

installed TIS 2000 with the latest software and
the hardware key is plugged into port. 

b. Turn ON the scan tool and keep at title screen.

c. Launch the TIS application.

d. Select the Security Access at the main screen.

e. Highlight the “Tech 2" on the Diagnostic Tool

Selection screen and click “Next”.

f. Click “Close” on the Security Access Enabled

screen. 

g. Turn OFF the scan tool.

h. Disconnect the scan tool from the terminal.

5. Install a scan tool to the vehicle.

6. Turn ON the ignition, with the engine OFF. 

7. Select Diagnostics > appropriate vehicle

identification > AT JR405E > Programming >
Program VIN. 

8. Input 17 digits of correct VIN. 

9. After complete the programming, turn OFF/ ON the

ignition. 

10. Select Diagnostics > Lock ECU. 

11. Follow the on-screen instructions and turn OFF/

ON the ignition. 

Service Programming System (SPS)
Description

The service programming system (SPS) allows a
technician to program a control module through the
data link connector (DLC). The information transfer
circuit that is used at the DLC is the same serial data
circuit used by the scan tool for retrieving DTCs,
displaying data, clearing DTCs etc. This procedure
offers the ability to install software/ calibrations
matched to a particular vehicle. 
Most control modules have two types of memory. The
software/ calibrations reside in the flash memory. The
two types of memory are listed below:

1

3

4

2