Nissan Silvia. Instruction — part 49

4

CHECK A/T MODE SWITCH CIRCUIT (With CONSULT-II)

With CONSULT-II

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Select “TCM INPUT SIGNALS”.
3. Read out “POWER SHIFT SW”. Make sure the selector lever switch position is indicated properly.

SAT417K

OK or NG

OK (With CONSULT-II)

©

GO TO 7.

OK (Without CONSULT-
II)

©

GO TO 8.

NG

©

GO TO 6.

5

CHECK A/T MODE SWITCH CIRCUIT (Without CONSULT-II)

Without CONSULT-II

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Check voltage between TCM harness connector M26 terminal Nos. 43 (GY), 44 (L/B) and ground when A/T mode

switch is “ON” and “OFF”.

SAT120KA

OK or NG

OK (With CONSULT-II)

©

GO TO 7.

OK (Without CONSULT-
II)

©

GO TO 8.

NG

©

GO TO 6.

GI

MA

EM

LC

EC

FE

CL

MT

PD

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-193

6

DETECT MALFUNCTIONING ITEM

Check the following items:

I

A/T mode switch

a. Check continuity between two terminals.

SAT121KA

I

Harness for short or open between TCM and A/T mode switch (Main harness)

I

Harness of ground circuit for A/T mode switch (Main harness) for short or open

OK or NG

OK (With CONSULT-II)

©

GO TO 7.

OK (Without CONSULT-
II)

©

GO TO 8.

NG

©

Repair or replace damaged parts.

7

CHECK THROTTLE POSITION SWITCH CIRCUIT (With CONSULT-II)

With CONSULT-II

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out “CLOSED THL/SW” and “W/O THRL/P-SW” depressing and releasing accelerator pedal.

Check the signal of throttle position switch is indicated properly.

MTBL0011

SAT646J

OK or NG

OK

©

GO TO 9.

NG

©

Check the following items:

I

Throttle position switch
Refer to “Component Inspection”, AT-197.

I

Harness for short or open between ignition switch and throttle position switch (Main
harness)

I

Harness for short or open between throttle position switch and TCM (Main harness)

TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-194

8

CHECK THROTTLE POSITION SWITCH CIRCUIT (Without CONSULT-II)

Without CONSULT-II

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Check voltage between TCM harness connector M25 terminals No. 16 (LG), 17 (R) and ground while depressing, and

releasing accelerator pedal slowly. (after warming up engine)

MTBL0637

SAT526JC

OK or NG

OK

©

GO TO 9.

NG

©

Check the following items:

I

Throttle position switch
Refer to “Component Inspection”, AT-197.

I

Harness for short or open between ignition switch and throttle position switch (Main
harness)

I

Harness for short or open between throttle position switch and TCM (Main harness)

9

CHECK DTC

Perform Diagnostic procedure, AT-190.

OK or NG

OK

©

INSPECTION END

NG

©

1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-

nector.

GI

MA

EM

LC

EC

FE

CL

MT

PD

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-195

SAT418K

COMPONENT INSPECTION

NMAT0204S04

Overdrive Control Switch

NMAT0204S0401

I

Check continuity.

Terminal

Connector

Switch posi-

tion

Terminal No. (Wire color)

Continuity

B8

OD “ON”

1 (L/B)

2 (B)

No

OD “OFF”

Yes

SAT517GB

SAT843BI

Park/Neutral Position Switch

NMAT0204S0402

1.

Check continuity.

Terminal

Connector

Select lever

position

Terminal No. (Wire color)

Continuity

E22

P, N

1 (B)

2 (BR)

Yes

E23

P

3 (B)

4 (L)

R

3 (B)

5 (G)

N

3 (B)

6 (W)

D

3 (B)

7 (Y)

2

3 (B)

8 (R)

1

3 (B)

9 (OR)

SAT807B

2.

If NG, check again with instruction control linkage disconnected
from instruction shaft of A/T assembly. Refer to step 1.

3.

If OK on step 2, adjust instruction control linkage. Refer to AT-207.

SAT386HF

4.

If NG on step 2, remove PNP switch from A/T and check con-
tinuity of PNP switch terminals. Refer to step 1.

5.

If OK on step 4, adjust PNP switch. Refer to AT-206.

6.

If NG on step 4, replace PNP switch.

TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-196