Infiniti Q45. Manual - part 44

TROUBLE DIAGNOSIS

AT-89

D

E

F

G

H

I

J

K

L

M

A

B

AT

*1: Refer to 

AT-41, "Malfunction Indicator Lamp (MIL)"

 .

*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.

D/C SOLENOID 
FNCTN

●

TCM detects that actual gear ratio is irregular, and relation 
between gear position and condition of ATF pressure 
switch 5 is irregular during depressing accelerator pedal. 
(Other than during shift change.)

●

TCM detects that relation between gear position and condi-
tion of ATF pressure switch 5 is irregular during releasing 
accelerator pedal. (Other than during shift change.)

P1764

P1764*2

AT-151

HLR/C SOL/CIRC

●

Normal voltage not applied to solenoid due to functional 
malfunction, cut line, short, or the like.

●

TCM detects as irregular by comparing target value with 
monitor value.

P1767

P1767

AT-153

HLR/C SOL 
FNCTN

●

TCM detects that actual gear ratio is irregular, and relation 
between gear position and condition of ATF pressure 
switch 6 is irregular during depressing accelerator pedal. 
(Other than during shift change.)

●

TCM detects that relation between gear position and condi-
tion of ATF pressure switch 6 is irregular during releasing 
accelerator pedal. (Other than during shift change.)

P1769

P1769*2

AT-155

LC/B SOLENOID/
CIRC

●

Normal voltage not applied to solenoid due to functional 
malfunction, cut line, short, or the like.

P1772

P1772

AT-157

LC/B SOLENOID 
FNCT

●

TCM detects an improper voltage drop when it tries to oper-
ate the solenoid valve.

●

Condition of ATF pressure switch 2 is different from monitor 
value, and relation between gear position and actual gear 
ratio is irregular.

P1774

P1774*2

AT-159

MANU MODE SW/
CIRC

●

When an impossible pattern of switch signals is detected, a 
malfunction is detected.

P1815

—

AT-161

ATF PRES SW 1/
CIRC

●

TCM detects that actual gear ratio is normal, and relation 
between gear position and condition of ATF pressure 
switch 1 is irregular during depressing accelerator pedal. 
(Other than during shift change.)

P1841

—

AT-165

ATF PRES SW 3/
CIRC

●

TCM detects that actual gear ratio is normal, and relation 
between gear position and condition of ATF pressure 
switch 3 is irregular during depressing accelerator pedal. 
(Other than during shift change.)

P1843

—

AT-167

ATF PRES SW 5/
CIRC

●

TCM detects that actual gear ratio is normal, and relation 
between gear position and condition of ATF pressure 
switch 5 is irregular during depressing accelerator pedal. 
(Other than during shift change.)

P1845

—

AT-169

ATF PRES SW 6/
CIRC

●

TCM detects that actual gear ratio is normal, and relation 
between gear position and condition of ATF pressure 
switch 6 is irregular during depressing accelerator pedal. 
(Other than during shift change.)

P1846

—

AT-171

NO DTC IS 
DETECTED FUR-
THER TESTING 
MAY BE 
REQUIRED

●

No NG item has been detected.

X

X

—

Items (CONSULT-

II screen terms)

Malfunction is detected when...

TCM self-

diagnosis

OBD-II (DTC)

Reference 

page

 “A/T” with   

CONSULT-II

MIL indicator 

lamp*1, 

“ENGINE” with 

CONSULT-II or 

GST

AT-90

TROUBLE DIAGNOSIS

How to Erase Self-diagnostic Results

1.

Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE”
screen.

2.

Touch ”ERASE”. (The self-diagnostic results will be erased.)

DATA MONITOR MODE
Operation Procedure

1.

Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.

NOTE:
When malfunctions detected, CONSULT-II performs “REAL-
TIME DIAGNOSIS”. Also, any malfunction detected while in
this mode will be displayed at real time.

Display Items List

 X: Standard, —: Not applicable, 

: Option

BCIA0031E

PCIA0061E

BCIA0031E

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU 

INPUT 

SIGNALS

MAIN SIG-

NALS

SELEC-

TION 

FROM 
MENU

VHCL/S SE-A/T (km/h)

X

X

Revolution sensor

VHCL/S SE-MTR (km/h)

X

—

ACCELE POSI (0.0/8) 

X

—

Accelerator pedal position signal

THROTTLE POSI (0.0/8)

X

X

Degree of opening for accelerator recognized by 
the TCM.
For fail-safe operation, the specific value used 
for control is displayed.

CLSD THL POS (ON/OFF)

X

—

Signal input with CAN communications.

W/O THL POS (ON/OFF)

X

—

BRAKE SW (ON/OFF)

X

—

Stop lamp switch

TROUBLE DIAGNOSIS

AT-91

D

E

F

G

H

I

J

K

L

M

A

B

AT

GEAR

—

X

Gear position recognized by the TCM updated 
after gear-shifting.

ENGINE SPEED (rpm) 

X

X

TURBINE REV (rpm) 

X

X

OUTPUT REV (rpm) 

X

X

GEAR RATIO

—

X

TC SLIP SPEED (rpm)

—

X

Difference between engine speed and torque 
converter input shaft speed.

F SUN GR REV (rpm) 

—

—

F CARR GR REV (rpm)

—

—

ATF TEMP SE 1 (V)

X

—

ATF TEMP SE 2 (V)

X

—

ATF TEMP 1 (

°

C)

—

X

ATF TEMP 2 (

°

C)

—

X

BATTERY VOLT (V)

X

—

ATF PRES SW 1 (ON/OFF)

X

X

(for FR/B solenoid)

ATF PRES SW 2 (ON/OFF)

X

X

(for LC/B solenoid)

ATF PRES SW 3 (ON/OFF)

X

X

(for I/C solenoid)

ATF PRES SW 5 (ON/OFF)

X

X

(for D/C solenoid)

ATF PRES SW 6 (ON/OFF)

X

X

(for HLR/C solenoid)

PNP SW 1 (ON/OFF)

X

—

PNP SW 2 (ON/OFF)

X

—

PNP SW 3 (ON/OFF)

X

—

PNP SW 4 (ON/OFF)

X

—

1 POSITION SW (ON/OFF)

X

—

SLCT LVR POSI

—

X

Selector lever position is recognized by the 
TCM.
For fail-safe operation, the specific value used 
for control is displayed.

OD CONT SW (ON/OFF)

X

—

Not mounted but displayed.

POWERSHIFT SW (ON/OFF)

X

—

HOLD SW (ON/OFF)

X

—

MANU MODE SW (ON/OFF)

X

—

NON M-MODE SW (ON/OFF)

X

—

UP SW LEVER (ON/OFF)

X

—

DOWN SW LEVER (ON/OFF)

X

—

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU 

INPUT 

SIGNALS

MAIN SIG-

NALS

SELEC-

TION 

FROM 
MENU

AT-92

TROUBLE DIAGNOSIS

SFT UP ST SW (ON/OFF)

—

—

Not mounted but displayed.

SFT DWN ST SW (ON/OFF)

—

—

ASCD-OD CUT (ON/OFF)

—

—

ASCD-CRUISE (ON/OFF)

—

—

ABS SIGNAL (ON/OFF)

—

—

ACC OD CUT (ON/OFF)

—

—

Intelligent cruise control (ICC) system

ACC SIGNAL (ON/OFF)

—

—

TCS GR/P KEEP (ON/OFF)

—

—

TCS SIGNAL 2 (ON/OFF)

—

—

TCS SIGNAL 1 (ON/OFF)

—

—

TCC SOLENOID (A)

—

X

LINE PRES SOL (A)

—

X

I/C SOLENOID (A)

—

X

FR/B SOLENOID (A)

—

X

D/C SOLENOID (A)

—

X

HLR/C SOL (A)

—

X

ON OFF SOL (ON/OFF)

—

—

LC/B solenoid

TCC SOL MON (A)

—

—

L/P SOL MON (A)

—

—

I/C SL MON (A)

—

—

FR/B SOL MON (A)

—

—

D/C SOL MON (A)

—

—

HLR/C SOL MON (A)

—

—

ON OFF SOL MON (ON/OFF)

—

—

LC/B solenoid

P POSI IND (ON/OFF)

—

—

R POSI IND (ON/OFF)

—

—

N POSI IND (ON/OFF)

—

—

D POSI IND (ON/OFF)

—

—

4TH POSI IND (ON/OFF)

—

—

3RD POSI IND (ON/OFF)

—

—

2ND POSI IND (ON/OFF)

—

—

1ST POSI IND (ON/OFF)

—

—

MANU MODE IND (ON/OFF)

—

—

POWER M LAMP (ON/OFF)

—

—

F-SAFE IND/L (ON/OFF)

—

—

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU 

INPUT 

SIGNALS

MAIN SIG-

NALS

SELEC-

TION 

FROM 
MENU