Nissan Frontier D22. Manual - part 21

A/T SHIFT LOCK SYSTEM

AT-53

[RL4R01A]

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Wiring Diagram

ECS007J2

WCWA0113E

AT-54

[RL4R01A]

A/T SHIFT LOCK SYSTEM

Diagnostic Procedure

ECS007J3

SYMPTOM 1:

●

Selector lever cannot be moved from P position with key in ON position and brake pedal applied.

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Selector lever can be moved from P position with key in ON position and brake pedal released.

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Selector lever can be moved from P position when key is removed from key cylinder.

SYMPTOM 2:

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Ignition key cannot be removed when selector lever is set to P position.

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Ignition key can be removed when selector lever is set to any position except P.

1. 

CHECK SHIFT LOCK ROD

Check shift lock rod for damage.

OK or NG

OK

>> GO TO 2.

NG

>> Repair shift lock rod. Refer to 

AT-52, "SHIFT LOCK ROD"

 .

2. 

CHECK SELECTOR LEVER POSITION

Check selector lever position indicator and selector lever for damage.

OK or NG

OK

>> GO TO 3.

NG

>> Check selector lever. Refer to 

AT-60, "Park/Neutral Position (PNP) Switch Adjustment"

  and 

AT-

61, "Control Cable Adjustment"

 .

3. 

CHECK POWER SOURCE

1.

Turn ignition switch ON. 
(Do not start engine.)

2.

Check voltage between A/T shift lock switch (ASCD brake switch) harness connector M48 terminal 1 and
ground.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4. 

DETECT MALFUNCTIONING ITEM

Check the following items:

●

7.5A fuse (No. 5, located in the fuse block)

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Harness for short or open between fuse and A/T shift lock switch (ASCD brake switch) harness connector
terminal 1

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Ignition switch. Refer to 

PG-14, "IGNITION POWER SUPPLY — IGNITION SW. IN ON AND/OR START"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

Voltage

: Battery voltage

AAT140A

A/T SHIFT LOCK SYSTEM

AT-55

[RL4R01A]

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5. 

CHECK INPUT SIGNAL [A/T SHIFT LOCK SWITCH (ASCD BRAKE SWITCH)]

1.

Turn ignition switch ON.
(Do not start engine.)

2.

Check voltage between A/T device harness connector M35, terminal 2 (B/W) and ground.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6. 

DETECT MALFUNCTIONING ITEM

Check the following items:

●

Harness for short or open between A/T device harness connector M35 terminal 2 and A/T shift lock switch
(ASCD brake switch) harness connector terminal 2

●

A/T shift lock switch (ASCD brake switch)
Check continuity between terminals 1 and 2

Check A/T shift lock switch (ASCD brake switch) after adjusting brake pedal. Refer to 

BR-7,

"BRAKE PEDAL AND BRACKET"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

WAT524

AAT145A

MTBL0208

AT-56

[RL4R01A]

A/T SHIFT LOCK SYSTEM

7. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect A/T device harness connector.

3.

Check continuity between A/T device harness connector M35 terminal 1 and ground.

If OK, check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 8.

NG

>> Repair harness or connector.

8. 

CHECK PARK POSITION SWITCH

●

Check continuity between A/T device harness connector M35 terminal 1 (B) and park position switch har-
ness connector S1 terminal 2 (L).

OK or NG

OK

>> GO TO 9.

NG

>> Replace park position switch.

9. 

CHECK SHIFT LOCK SOLENOID

●

Check operation by applying battery voltage to A/T device connector M35 terminal 2  (B/W) and shift lock
solenoid harness connector S1 terminal 2 (B).

OK or NG

OK

>> GO TO 10.

NG

>> Replace shift lock solenoid.

Continuity should exist.

AAT142A

WAT333

WAT334