Nissan Frontier D22. Manual - part 19

TROUBLE DIAGNOSES

AT-45

[RL4R01A]

D

E

F

G

H

I

J

K

L

M

A

B

AT

4. 

CHECK OVERDRIVE CONTROL SWITCH

Check continuity between overdrive control switch terminals 1 and 2.

OK or NG

OK

>> GO TO 5.

NG

>> Replace overdrive control switch.

5. 

CHECK OVERDRIVE CANCEL SOLENOID VALVE CIRCUIT

Check resistance between overdrive cancel solenoid valve terminals 1 and 2.

OK or NG

OK

>> GO TO 6.

NG

>> Replace overdrive cancel solenoid valve.

6. 

DETECT MALFUNCTIONING ITEM

Check the following items:
1.

Harness continuity between fuse and overdrive cancel solenoid valve

2.

Harness continuity between fuse and overdrive hold control module

3.

Harness continuity between overdrive cancel solenoid valve and overdrive cancel relay

4.

Condition of diode

5.

Harness continuity between overdrive hold control module and overdrive cancel relay

6.

Harness continuity between overdrive hold control module and overdrive control switch

7.

Harness continuity between overdrive hold control module and ground

OK or NG

OK

>> Replace overdrive hold control module.

NG

>> Repair or replace damaged parts.

LAT500

Resistance

: Approximately 25

Ω

AAT132A

AT-46

[RL4R01A]

TROUBLE DIAGNOSES

PARK/NEUTRAL POSITION (PNP) SWITCH

1. 

CHECK PNP SWITCH CIRCUIT STEP 1

1.

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

2.

Check voltage between ECM harness connector F29 terminal 22 and ground while moving selector lever
through each position.

OK or NG

OK

>> INSPECTION END.

NG

>> GO TO 2.

AAT133A

P, N position

: 0V

R, D, 2, 1 position

: Approximately 5V

AAT148A

TROUBLE DIAGNOSES

AT-47

[RL4R01A]

D

E

F

G

H

I

J

K

L

M

A

B

AT

2. 

CHECK POWER SUPPLY FOR PNP SWITCH

1.

Disconnect PNP switch harness connector.

2.

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

Do approximately 12 volts exist between PNP switch harness con-
nector E35 terminal 1 and body ground?

Yes or No

Yes

>> GO TO 3.

No

>>  Check 10A fuse (No. 11, located in the fuse block), har-

ness and connector. Refer to 

PG-9, "POWER SUPPLY

ROUTING"

 .

3. 

CHECK PNP SWITCH

●

Check continuity in N and P positions.

●

With manual lever held in each position, turn manual shaft 1.5

° in both directions (When manual lever is in

each position, continuity normally exists within 1.5

° range). If continuity does not exist equally in either

direction, properly adjust PNP switch. Refer to 

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

 .

OK or NG

OK

>> GO TO 4.

NG

>> Replace PNP switch.

AAT519A

LAT394

AAT520A

AT-48

[RL4R01A]

TROUBLE DIAGNOSES

4. 

CHECK POWER SUPPLY FOR PNP RELAY

1.

Reconnect PNP switch harness connector.

2.

Turn ignition switch ON.

3.

Disconnect PNP relay harness connector.

4.

Put selector lever in P or N position.

Do approximately 12 volts exist between PNP relay harness connec-
tor E27 terminal 2 and body ground?
Yes or No

Yes

>> GO TO 6.

No

>> GO TO 5.

5. 

CHECK PNP SWITCH CIRCUIT STEP 2

1.

Turn ignition switch OFF.

2.

Disconnect PNP switch harness connector E35. Check circuit continuity between PNP switch harness
connector E35 terminal 2 and PNP relay harness connector E27 terminal 2.

OK or NG

OK

>> GO TO 6.

NG

>> Repair harness or connector.

6. 

CHECK BODY GROUND CIRCUIT FOR PNP RELAY

1.

Turn ignition switch OFF.

2.

Does continuity exist between PNP relay E27 terminals (1, 6) and body ground?

OK or NG

OK

>> GO TO 7.

NG

>> Repair harness or connector.

AAT521A

Continuity should exist.

AAT522A

Continuity should exist.

AAT523A