Nissan Frontier D22. Manual - part 7

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

ACS-21

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ACS

Electrical Component Inspection

EKS006XL

ASCD STEERING SWITCH

Check continuity between ASCD steering switch connector M205,
terminals 14 and 13 by pushing each button.

ASCD BRAKE SWITCH AND STOP LAMP SWITCH

Check brake pedal adjustment after checking each switch.
Refer to 

BR-8, "Adjustment"

 .

ASCD CLUTCH SWITCH (M/T)

Check continuity between ASCD clutch switch M4 terminals 1 and 2.

PARK/NEUTRAL POSITION SWITCH (A/T)

Check continuity between PNP switch E35 terminals 1 and 2.

Button

Terminals

Resistance (k

Ω)

(Approx.)

ON·OFF

13 - 14

0

COAST/SET

1.47 - 1.53

RES/ACCEL

3.24 - 3.36

CANCEL

5.00 - 5.20

LEL060A

Condition

Continuity

ASCD brake 

switch (M48)

Stop lamp switch 

(M47)

When brake pedal is depressed

No

Yes

When brake pedal is released

Yes

No

WEL459A

Condition

Continuity

When clutch pedal is depressed

No

When clutch pedal is released

Yes

WEL460A

A/T selector lever position

Continuity

Between terminals 1 and 2

“P”

Yes

“N”

Yes

Except “P” and “N”

No

WEL461A

ACS-22

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

ASCD RELAY (A/T)

Check continuity between ASCD relay harness connector M128 ter-
minals 3 and 4, 3 and 5.

Condition

Continuity

12V direct current supply between terminals 1 and 2

Between terminals 3 and 

5

No current supply

Between terminals 3 and 

4

AEL553C

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

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ACS

ASCD Wire Adjustment

EKS006XM

WITH VG33E

WITH VG33ER

CAUTION:

●

Be careful not to twist ASCD wire when removing it.

●

Do not tense ASCD wire excessively during adjustment.

Adjust the tension of ASCD wire in the following manner.

1.

Loosen lock nut and adjusting nut.

2.

Make sure that accelerator wire is properly adjusted. Refer to 

ACS-23, "ASCD Wire Adjustment"

 .

3.

Tighten adjusting nut just until throttle drum starts to move.

WEL450A

LEL449A

ACS-24

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

4.

Loosen adjusting nut again 1/2 to 1 turn.

5.

Tighten lock nut.