Infiniti Q45. Manual - part 514

ASCD INDICATOR

EC-695

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ASCD INDICATOR

PFP:24814

Component Description

NBS0027X

ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter.
CRUISE lamp illuminates when MAIN switch on ASCD steering switch is turned ON to indicated that ASCD
system is ready for operation.
SET lamp illuminates when following conditions are met. 

●

CRUISE lamp is illuminated.

●

SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of
ASCD setting.

SET lamp remains lit during ASCD control.
Refer to 

EC-29, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"

  for the ASCD function.

CONSULT-II Reference Value in Data Monitor Mode

NBS0027Y

Specification data are reference value.

MONITOR ITEM

CONDITION

SPECIFICATION

CRUISE LAMP

●

Ignition switch: ON

MAIN switch: Pressed at the 1st 
time 

→

 at the 2nd time

ON 

→

 OFF

SET LAMP

●

MAIN switch: ON

●

When vehicle speed is 
between 40 km/h (25 MPH) 
and 144 km/h (89 MPH)

ASCD: Operating

ON

ASCD: Not operating

OFF

EC-696

ASCD INDICATOR

Wiring Diagram

NBS0027Z

TBWM0591E

ASCD INDICATOR

EC-697

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Diagnostic Procedure

NBS00280

1. 

CHECK OVERALL FUNCTION

Check ASCD indicator under the following conditions.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

2. 

CHECK DTC

Check that DTC U1000 or U1001 is not displayed.

OK or NG

OK

>> GO TO 3.

NG

>> Perform trouble diagnosis for DTC U1000, U1001. Refer to 

EC-156, "DTC U1000, U1001 CAN

COMMUNICATION LINE"

 .

3. 

CHECK COMBINATION METER OPERATION

Does combination meter operate normally?

Yes or No

Yes

>> GO TO 4.

No

>> Check combination meter circuit. Refer to 

DI-7, "COMBINATION METERS"

 .

4. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-145, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

ASCD INDICATOR

CONDITION

SPECIFICATION

CRUISE LAMP

●

Ignition switch: ON

MAIN switch: Pressed at the 1st 
time 

→

 at the 2nd time

ON 

→

 OFF

SET LAMP

●

MAIN switch: ON

●

When vehicle speed is 
between 40 km/h (25 MPH) 
and 144 km/h (89 MPH)

ASCD: Operating

ON

ASCD: Not operating

OFF

EC-698

ELECTRICAL LOAD SIGNAL

ELECTRICAL LOAD SIGNAL

PFP:25350

CONSULT-II Reference Value in Data Monitor Mode

NBS0027K

Specification data are reference values.

MONITOR ITEM

CONDITION

SPECIFICATION

LOAD SIGNAL

●

Ignition switch: ON

Rear window defogger switch: ON
and/or
Lighting switch: 2nd position

ON

Rear window defogger switch and lighting 
switch: OFF

OFF

HEATER FAN SW

●

Engine: After warming up, idle the 
engine

Heater fan switch: ON

ON

Heater fan switch: OFF

OFF