Infiniti F50. Instruction - page 64

DTC P1703 TRANSMISSION CONTROL MODULE (ROM)

AT-141

D

E

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A

B

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Diagnostic Procedure

ECS0085E

1.

CHECK DTC

With CONSULT-II

1.

Turn ignition switch to “ON” position. (Do not start engine.)

2.

Select “SELF DIAG RESULTS” mode for “A/T” with CONSULT-
II.

3.

Touch “ERASE”.

4.

Turn ignition switch to “OFF” position and wait at least 10 sec-
onds.

5.

Perform DTC confirmation procedure,

AT-140, "DTC Confirma-

tion Procedure"

.

Is the “TCM·ROM” displayed again?

Yes

>> Replace TCM.

No

>> INSPECTION END

SCIA1290E

AT-142

DTC P1704 TRANSMISSION CONTROL MODULE (EEPROM)

DTC P1704 TRANSMISSION CONTROL MODULE (EEPROM)

PFP:31036

Description

ECS0085F

The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The TCM controls the A/T.

On Board Diagnosis Logic

ECS0085G

This is not an OBD-II self-diagnostic item.

Diagnostic trouble code “TCM·EEPROM” with CONSULT-II is detected when TCM memory EEPROM is
malfunctioning.

Possible Cause

ECS0085H

TCM

DTC Confirmation Procedure

ECS0085I

NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF”
and wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-II

1.

Turn ignition switch to “ON” position. (Do not start engine.)

2.

Select “DATA MONITOR” mode for A/T with CONSULT-II.

3.

Start engine.

4.

Run engine for at least 2 consecutive seconds at idle speed.

5.

If DTC is detected, go to

AT-143, "Diagnostic Procedure"

.

SCIA1287E

SAT014K

DTC P1704 TRANSMISSION CONTROL MODULE (EEPROM)

AT-143

D

E

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G

H

I

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K

L

M

A

B

AT

Diagnostic Procedure

ECS0085J

1.

CHECK DTC

With CONSULT-II

1.

Turn ignition switch to “ON” position and select “SELF DIAGNO-
SIS” mode for “A/T” with CONSULT-II.

2.

Move selector lever to “R” position.

3.

Depress accelerator pedal (Full throttle position).

4.

Touch “ERASE”.

5.

Turn ignition switch to “OFF” position and wait at least 10 sec-
onds.

6.

Perform “DTC Confirmation Procedure”. Refer to

AT-142, "DTC

Confirmation Procedure"

.

Is the “TCM·EEPROM” displayed again?

Yes

>> Replace TCM.

No

>> INSPECTION END

SCIA1290E

AT-144

DTC P1705 THROTTLE POSITION SENSOR

DTC P1705 THROTTLE POSITION SENSOR

PFP:22620

Description

ECS0085K

Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor, etc. The actuator sends a signal to the ECM, and ECM sends signals to TCM with CAN com-
munication.

On Board Diagnosis Logic

ECS0085L

This is not an OBD-II self-diagnostic item.

Diagnostic trouble code “TP SEN/CIRC A/T” with CONSULT-II or 15th judgement flicker without CON-
SULT-II is detected when TCM does not receive the proper accelerator pedal position signals (input by
CAN communication) from ECM.

Possible Cause

ECS0085M

Harness or connectors
(The sensor circuit is open or shorted.)

DTC Confirmation Procedure

ECS0085N

NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF”
and wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-II

1.

Turn ignition switch to “ON” position. (Do not start engine.)

2.

Select “DATA MONITOR” mode for “A/T” with CONSULT-II.

3.

Start engine and let it idle for 1 second.

4.

If DTC is detected, go to “

AT-144, "Diagnostic Procedure"

.

Diagnostic Procedure

ECS0085O

1.

CHECK DTC WITH ECM

With CONSULT-II

1.

Turn ignition switch to “ON” position. (Do not start engine.)

2.

Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON-
SULT-II. Refer to

EC-108, "CONSULT-II Function"

.

OK or NG

OK

>> GO TO 2.

NG

>> Check the DTC detected item.Go to

EC-108, "CON-

SULT-II Function"

.

If CAN communication line is detected, go to

AT-99,

"DTC U1000 CAN COMMUNICATION LINE"

.

SAT014K

SAT014K

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