Infiniti M45 (Y34). Manual - part 55

DTC U1000 CAN COMMUNICATION LINE

AT-105

D

E

F

G

H

I

J

K

L

M

A

B

AT

TCM terminals and data are reference value.

Diagnostic Procedure

ACS001AA

1. 

CHECK CAN COMMUNICATION CIRCUIT

 With CONSULT-II

1.

Turn ignition switch ON and start engine.

2.

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

Is any malfunction of the “CAN COMM CIRCUIT” indicated?

YES

>> Print out CONSULT-II screen, GO TO LAN section.

Refer to 

LAN-21, "CAN Communication Unit"

 .

NO

>> INSPECTION END

Terminal   

No.

Wire 

color

Item

Condition

Data (Approx.)

6

L

CAN H

–

–

7

R

CAN L

–

–

PCIA0061E

AT-106

DTC P0615 START SIGNAL CIRCUIT

DTC P0615 START SIGNAL CIRCUIT

PFP:25230

Description

ACS001AB

Prohibits cranking other at “P” or “N” position.

CONSULT-II Reference Value

ACS004P0

On Board Diagnosis Logic

ACS001AC

●

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

●

Diagnostic trouble code “STARTER RELAY/CIRC” with CONSULT-II or 14th judgement flicker without
CONSULT-II is detected when starter relay is switched ON other than at “P” or “N” position, or when
switched OFF at “P” or “N” position.

Possible Cause

ACS001AD

●

Harness or connectors
[The park/neutral position (PNP) relay and TCM circuit is open or shorted.]

●

Park/neutral position (PNP) relay

DTC Confirmation Procedure

ACS001AE

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.

Vehicle start for at least 2 consecutive seconds.

5.

If DTC is detected, go to 

AT-108, "Diagnostic Procedure"

 .

Item name

Condition 

Display value

STARTER RELAY

Selector lever in “N”, “P” positions.

ON

Selector lever in other positions.

OFF

SAT014K

DTC P0615 START SIGNAL CIRCUIT

AT-107

D

E

F

G

H

I

J

K

L

M

A

B

AT

Wiring Diagram — AT — STSIG

ACS001AF

TCWA0110E

AT-108

DTC P0615 START SIGNAL CIRCUIT

TCM terminal and data are reference value. Measured between each terminal and ground.

Diagnostic Procedure

ACS001AG

1. 

CHECK PNP RELAY

 With CONSULT-II

1.

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

2.

Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II and check monitor “STARTER
RELAY” (PNP relay) ON/OFF.

 Without CONSULT-II

1.

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

2.

Check the voltage between the TCM connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2. 

DETECT MALFUNCTIONING ITEM

Check the following items:

●

PNP relay. Refer to 

PG-60, "STANDARDIZED RELAY"

 .

●

Disconnections or short-circuits in the harness between TCM and the PNP relay

●

Ground circuit for the PNP relay

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace damaged parts.

3. 

CHECK DTC

Perform “DTC Confirmation Procedure”. Refer to 

AT-106, "DTC Confirmation Procedure"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 4.

Terminal   

No.

Wire 

color

Item

Condition

Data (Approx.)

48

B/W

PNP relay
(Starter relay)

IGN ON

Selector lever in “N”, “ P” positions.

Battery voltage

Selector lever in other positions.

0V

Item name

Condition 

Display value (Approx.)

STARTER RELAY

Selector lever in “N”, “P” 
positions.

ON

Selector lever in other 
positions.

OFF

PCIA0056E

Item

Connector 

No.

Terminal No.

(Wire color)

Shift position

Voltage 

(Approx.) 

PNP relay
(Starter relay)

F104

48

(B/W)

Ground

N and P

Battery voltage

R and D

0V

PCIA0060E