Infiniti F50. Manual - part 750

TROUBLE DIAGNOSIS FOR ACTIVE DAMPER SUSPENSION

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ACTIVE TEST PROCEDURE

1.

Connect the CONSULT-II to data link connector, then start the
engine.

2.

Touch “START”, “ACT D/SUS” and “ACTIVE TEST”.

3.

Touch “INDICATOR” or “DAMPER”.

(A) When “INDICATOR” is selected

1.

Touch “MAIN SIGNAL”, then “START”.

2.

When “OFF” is touched, indicator lamp goes out regardless of
select switch positions. Monitor indicator will then be turned
“OFF”

3.

When “ON” is touched, indicator lamp comes on regardless of
select switch positions. Monitor indicator will then be turned
“ON”.

(B) When “DAMPER” is selected

1.

Touch “SELECTION FROM MENU”.

2.

Select and touch “DAMP MTR F/R” or “DAMP MTR F/L”, and “DAMP MTR R/R” or “DAMP MTR R/L”, as
required.

3.

Touch “ENTER”, then “START”.

4.

“4 Step” for front damper motors and “4 step” for rear damper
motor will be then shown on the display.

5.

Touch “CONDITION CHANGE”, “FL-HS, FR-HS, RL-HS, RR-
HS” and “START”.

6.

“80 step” for front damper motors and “80 step” for rear damper
motor will be then shown on the display.

7.

Print out data as required.

8.

The actuator center shaft becomes as shown in the figure.

PBIB0196E

SFA989B

SFA990B

SEIA0078E

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TROUBLE DIAGNOSIS FOR ACTIVE DAMPER SUSPENSION

9.

Touch “CONDITION CHANGE” FL-SS, FR-SS, RL-SS, RR-SS”
and “START”.

10. “0 step” for front damper motors and “0 step” for rear damper

motor will be then shown on the display.

11. Print out data as required.

12. The actuator center shaft becomes as shown in the figure.

13. Touch “CONDITION CHANGE” “FL-SH, FR-SH, RL-SH, RR-

SH” and “START”.

14. “- 60 step” for front damper motors and “- 60 step” for rear

damper motor will be then shown on the display.

15. Print out data as required.

16. The actuator center shaft becomes as shown in the figure.

ECU (Active Damper Suspension Control Unit) Part Number Mode

Ignore the ECU part number displayed in the ECU PART NUMBER MODE. Refer to parts catalog to order the
ECU.

SFA991B

SEIA0079E

SFA992B

SEIA0080E

TROUBLE DIAGNOSIS FOR ACTIVE DAMPER SUSPENSION

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Self-Diagnosis

EES000BD

FUNCTION

The self-diagnosis system can be used without using CONSULT-II. With this system, both self-diagnostic his-
tory and fail-safe history are indicated by the SPORT indicator lamp.

SELF-DIAGNOSTICS PROCEDURE

1.

Turn ignition switch to “OFF”.

2.

Start the engine.

3.

Quickly switch the active damper suspension select switch from “SPORT” to “AUTO”, and vice versa, at
least 5 times within 10 seconds immediately after the engine has started.

●

2 or 3 seconds following the above switch operation, the indicator lamp will come on. This is not the
indication of self-diagnosis.

4.

Perform the following procedures to enter the corresponding signals.

●

Turn steering wheel 180

°

 in either direction from neutral.

●

Depress brake pedal.

●

Release brake pedal.

●

Move the vehicle at least 5 m (16 ft) forward.

HOW TO READ SELF-DIAGNOSTIC RESULTS

(Malfunction codes)
Following the steps listed under the “Self-diagnostic procedure”
above, a malfunctioning area or malfunctioning areas, if any, are
indicated by a flashing SPORT indicator lamp located in the meter
cluster.
The indicator lamp flashes to show malfunctioning areas corre-
sponding with No. 11 through 14, then No. 21, 23 and 24, in that
order. 2 seconds after all items are indicated, the indicator lamp
repeats the flash sequence for all items again.

●

When all items are in good order, the indicator lamp flashes at a
cycle of 1/4 Hz [ON (2 seconds) and OFF (2 seconds)].

●

The upper part of the figure at left shows an example of a mal-
functioning area corresponding with No. 23.

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The lower part of the figure at left shows an example of a mal-
functioning area (No. 23) which previously fell under the fail-safe
history data and is still stored in the current fail-safe data history.

After repairing the malfunctioning area(s), erase the self-diagnostic
data stored in memory. 

Display mode:

First digit “ON” (0.6 seconds)

Second digit ON (0.3 seconds)

SFA931B

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TROUBLE DIAGNOSIS FOR ACTIVE DAMPER SUSPENSION

MALFUNCTION CODE/SYMPTOM CHART

HOW TO ERASE SELF-DIAGNOSTIC RESULTS

(Malfunction codes)

Disconnecting the Self-Diagnostic Function

Disconnect the self-diagnostic function using one of the following three methods:

●

Turn the ignition switch to “OFF”.

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Drive the vehicle at speeds greater than 30 km/h (19 MPH).

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Connect CONSULT-II.

Clearing the Self-Diagnostic Memory

Clear self-diagnostic data and fail-safe data stored in memory as follows:

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While self-diagnosis is being performed, depress the brake pedal at least 5 times and shift the select
switch position at least 5 times. Pedal depression and switch shifting must be done within 10 seconds dur-
ing self-diagnosis.

Code No.

Diagnostic item

11

Vehicle speed sensor

12

Steering angle sensor

13

Steering angle (neutral) sensor

14

Stop lamp switch

22

Vertical G sensor (front)

23

Vertical G sensor (rear)

31

Engine speed signal