Infiniti M45 (Y34). Manual — part 66

DTC P1703 TRANSMISSION CONTROL MODULE (ROM)

AT-149

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Diagnostic Procedure

ACS001BX

1.

CHECK DTC

With CONSULT-II

1.

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

2.

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

3.

Touch “ERASE”.

4.

Turn ignition switch OFF and wait at least 10 seconds.

5.

Perform DTC confirmation procedure,

AT-148, "DTC Confirma-

tion Procedure"

.

Is the “TCM·ROM” displayed again?

YES

>> Replace TCM.

NO

>> INSPECTION END

SCIA5304E

AT-150

DTC P1704 TRANSMISSION CONTROL MODULE (EEPROM)

DTC P1704 TRANSMISSION CONTROL MODULE (EEPROM)

PFP:31036

Description

ACS001BY

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

ACS001BZ

●

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

ACS001C0

TCM

DTC Confirmation Procedure

ACS001C1

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 ON. (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-151, "Diagnostic Procedure"

.

SCIA1287E

SAT014K

DTC P1704 TRANSMISSION CONTROL MODULE (EEPROM)

AT-151

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Diagnostic Procedure

ACS001C2

1.

CHECK DTC

With CONSULT-II

1.

Turn ignition switch ON and select “SELF DIAGNOSIS” 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 OFF and wait at least 10 seconds.

6.

Perform “DTC Confirmation Procedure”. Refer to

AT-150, "DTC

Confirmation Procedure"

.

Is the “TCM·EEPROM” displayed again?

YES

>> Replace TCM.

NO

>> INSPECTION END

SCIA5304E

AT-152

DTC P1705 THROTTLE POSITION SENSOR

DTC P1705 THROTTLE POSITION SENSOR

PFP:22620

Description

ACS001C3

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.

CONSULT-II Reference Value

ACS004PC

On Board Diagnosis Logic

ACS001C4

●

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

ACS001C5

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

DTC Confirmation Procedure

ACS001C6

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 ON. (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-153, "Diagnostic Procedure"

.

Item name

Condition

Display value (Approx.)

ACCELE POSI

Released accelerator pedal.

0.0/8

Fully depressed accelerator pedal.

8/8

SAT014K