Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1540

8-260 ELECTRICAL-BODY AND CHASSIS

VEHICLE SPEED SENSOR

(INCORPORATED IN THE

SPEEDOMETER)

Vehicle Speed Sensor Inspection

Remove the speedometer from the meter assembly and
measure the resistance value between the terminals.

Speed Sensor Resistance

Tester

Terminal

terminal

symbol

Red (+)

Black (-) Black (-)

Red (+)

4P

GND

4P

GND

13.5 - 16.5k

∞

4P - GND

Note: Use the analog type circuit tester.

VEHICLE SPEED SENSOR (INSTALLED

ON THE TRANSMISSION)

The speed sensor is installed on the rear portion of the
transmission.
The number of pulses generated is four pulses per one rotation
of the pinion shaft.

MUA T/M

ELECTRICAL-BODY AND CHASSIS 8-261

Vehicle Speed Sensor Inspection

1. Connect the vehicle speed sensor connector 1

M-10

(Diesel engine: 1

E-44

) to the battery (+) terminal and 2

M-10

(Diesel engine: 2

E-44

) to the (-) terminal.

2. Connect a resistance of 1.3K ohm to 5K ohm (1/4 W or

more) between connectors 1

M-10

. (Diesel engine: 1

E-44

)

and 3

M-10

(Diesel engine: 3

E-44

)

CAUTION:
Be extremely careful not to connect the battery (+) terminal
to the connector 3

M-10

(Diesel engine: 3

E-44

).

This may damage the vehicle speed sensor.

3. Rotate the shaft of the vehicle speed sensor slowly and

measure the voltage at the both ends with a digital tester.

The voltage, with one rotation of shaft fluctuates four times in
the following range: 10 to 14V - 2V or less.

8-262 ELECTRICAL-BODY AND CHASSIS

Timing Belt Indicator Light Reset Procedure (4 Diesel Engine)

Masking tape

A

B

W/ Tachometer

Masking tape

W/O Tachometer

A

B

Timing belt must be replaced after 100,000 km of vehicle operation.
When the odometer reading reaches 100,000 km, the timing belt indicator light will turn on to remind the driver to
change the timing belt.
After replacing the timing belt, the timing belt indicator light must be reset to remind the driver to replace the timing
belt after the next 100,000 km.

ELECTRICAL-BODY AND CHASSIS 8-263

Timing Belt Indicator Light Reset Procedure
1. Remove the masking tape from the hole

B

.

2. Remove the screw from the hole

A

and install it to the hole

B

.

3. Apply new masking tape to the hole

A

.

Note:
The above procedure assumes that the timing belt is being
replaced for the first time (after 100,000 km).
For subsequent reset procedure (at next 100,000 km), hole
positions will be the opposite of the above procedure.