Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1777

DIAGNOSIS 7A2-159

No.

Wire

Color

Pin Name

Input /

Output

Connected to

Measurement

Item

Measurement

Condition

Standard

Inspection

Point at
Trouble

At other than

R range, L

range 1st

gear

More than 10

V

Related

harness

B12

YEL Low & Reverse Brake Pressure Switch

Input

Low & reverse

brake pressure

switch

Voltage

At R range, L

range 1st

gear

Less than 2V

Pressure

switch

Related

harness

B13

YEL/

RED

Vehicle Speed Sensor

Input

Vehicle speed

sensor

Voltage (Wave

form)

At run in L

range in 1 st

gear 20 km/h.

Circuit tester

(+) to B13 pin,

(-) to B5 pin.

Pulse

generated

(At AC range

approx. 6.2

V)

Vehicle

speed

sensor

B14

BLU/

BLK

ATF Thermo Sensor Ground

-

ATF thermo

sensor

Continuity Normally

Continuity

Related

harness

B15

BLK Ground

-

Ground

Voltage

Normally

Less than 2V

Related

harness

B16

- -

- -

-

-

-

-

At lock-up.

Circuit tester

(+) to B17 pin,

(-) to B5 pin.

Pulse

generated

(At AC range

approx. 7.2

V)

Related

harness

B17

BLK Lock-up Duty Solenoid

Output

Lock-up duty

solenoid

Voltage (Wave

form)

At unlock-up.

Circuit tester

(+) to B17 pin,

(-) to B5 pin.

Pulse

generated

(At AC range

approx. 4.0

V)

Duty solenoid

At key switch

ON

Battery

voltage

Related

harness

B18

WHT V ign (Ignition Power Supply)

Input

Key switch

Voltage

At key switch

OFF

Less than 2V Fuse

At R range

Battery

voltage

Related

harness

B19

RED/

YEL

R Range Switch

Input

Inhibitor switch

Voltage

At other than

R range

Less than 2V

Inhibitor

switch

At other than

3rd or 4th

gear

More than 10

V

Related

harness

B20

WHT/

BLK

High Clutch Oil Pressure Switch

Input

High clutch

pressure switch

Voltage

At 3rd or 4th

gear

Less than 2V

Pressure

switch

At L range

Battery

voltage

Related

harness

B21

PNK/

BLK

L Range Switch

Input

Inhibitor switch

Voltage

At other than

L range

Less than 2V

Inhibitor

switch

B22

GRY/

RED

Ground Return

Output Shift solenoid

Continuity

Normally

Continuity

Related

harness

At N range

Battery

voltage

Related

harness

B23

VIO Line

Pressure

Solenoid

Output

Line pressure

solenoid

Voltage

At D range

stall

Less than 2V Solenoid

DIAGNOSIS 7A2-160

No.

Wire

Color

Pin Name

Input /

Output

Connected to

Measurement

Item

Measurement

Condition

Standard

Inspection

Point at
Trouble

At key switch

ON

Battery

voltage

Related

harness

B24

WHT V ign (Ignition Power Supply)

Input

Key switch

Voltage

At Key switch

OFF

Less than 2V Fuse

7.14ms 7.14ms

Time Time

0.714ms 6.426ms

V

olt

age

Off duty 10% =Throttle Position 0%

V

olt

age

Off duty 90% =Throttle Position 100%

Engine Speed Sensor Reference Wave Form

Measurement Terminal: A7 (+)

B5 (-)

Measurement Scale: 5V/div

20ms/div

Measurement Condition: At engine speed 1500rpm

Vehicle Speed Sensor Out Reference Wave Form

Measurement Terminal: A10 (+) B5 (-)
Measurement Scale: 5V/div

50ms/div

Measurement Condition: Vehicle speed 20km/h at L
range in 1st gear

Turbine Sensor Reference Wave Form

Measurement Terminal: B3 (+)

B5 (-)

Measurement Scale: 5V/div

500ms/div

Measurement Condition: Vehicle speed 20km/h at L
range in 1st gear

Vehicle Speed Sensor Reference Wave Form

Measurement Terminal: B13 (+) B5 (-)
Measurement Scale: 5V/div

2ms/div

Measurement Condition: Vehicle speed 20km/h at L
range in 1st gear

DIAGNOSIS 7A2-161

Low & Reverse Brake Duty Solenoid Reference
Wave Form

Measurement Terminal: B6 (+)

B22 (-)

Measurement Scale: 5V/div

10ms/div

Measurement Condition: P, N range in idle

2-4 Brake Duty Solenoid Reference Wave Form

Measurement Terminal: B7 (+)

B22 (-)

Measurement Scale: 5V/div

20ms/div

Measurement Condition: P, N range in idle

High Clutch Duty Solenoid Reference Wave Form

Measurement Terminal: B8 (+)

B22 (-)

Measurement Scale: 5V/div

20ms/div

Measurement Condition: P, N range in idle

Low Clutch Duty Solenoid Reference Wave Form

Measurement Terminal: B9 (+)

B22 (-)

Measurement Scale: 5V/div

20ms/div

Measurement Condition: D range 4th gear

Lock-up Duty Solenoid Reference Wave Form

Measurement Terminal: B17 (+) B5 (-)
Measurement Scale: 10V/div

5ms/div

Measurement Condition: Unlock-up condition

Lock-up Duty Solenoid Reference Wave Form

Measurement Terminal: B17 (+) B5 (-)
Measurement Scale: 10V/div

5ms/div

Measurement Condition: Lock-up condition

MEMO