Infiniti Q45 (FY33). Manual — part 468
Self-diagnosis
INTRODUCTION AND GENERAL DESCRIPTION
The self-diagnostic system diagnoses sensors, door motors,
blower motor and multiplex communication errors, etc. by system
line. Refer to applicable sections (items) for details. Shifting from
normal control to the self-diagnostic system is done as follows.
Start the engine (turn the ignition switch from “OFF” to “ON”). And
press
switch for at least 5 seconds. The
switch must be
pressed within 10 seconds after starting the engine (ignition switch
is turned “ON”). This system will be canceled by either pressing
switch or turning ignition switch “OFF”. Shifting from one step
to another is accomplished by means of rotating temperature con-
trol switch, as required.
Additionally shifting from STEP 5 to AUXILIARY MECHANISM is
accomplished by means of pushing
(Blower) switch.
Without Navigation System
Note
Start engine.
(Ignition switch OFF
,
ON)
In 10 seconds after starting engine (ignition switch
is turned “ON”), press
switch for at least 5
seconds.
STEP 1 — LEDs and segments are checked.
G
Ignition switch: OFF
switch: ON
Turn temperature dial
clockwise.
Turn temperature dial
counterclockwise.
STEP 2 — Input signals from each sensor are
checked.
G
Ignition switch: OFF
switch: ON
Turn temperature dial
clockwise.
Turn temperature dial
counterclockwise.
STEP 3 — Mode door motor position switch is
checked.
G
Ignition switch: OFF
E
switch: ON
Self-diagnostic function is canceled.
Turn temperature dial
clockwise.
Turn temperature dial
counterclockwise.
STEP 4 — Actuators are checked.
G
Ignition switch: OFF
switch: ON
Turn temperature dial
clockwise.
Turn temperature dial
counterclockwise.
STEP 5 — Temperature detected by each sensor
is checked and multiplex communication errors are
detected.
G
Ignition switch: OFF
switch: ON
AUXILIARY MECHANISM — Temperature setting
trimmer
Ignition switch: OFF
switch: ON
Note:
Without engine running, STEP 4 and 5 are not useful
for some case because compressor does not oper-
ate.
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
EL
IDX
TROUBLE DIAGNOSES
H
H
H
H
H
H
H
HA-37
RHA157H
RHA179H
STEP-BY-STEP PROCEDURE
Turn ignition switch ON.
Set in self-diagnostic mode. Within 10 sec-
onds after starting engine (ignition switch is
turned “ON”.), press
switch for at
least 5 seconds.
STEP 1 - LEDs AND SEGMENT ARE
CHECKED.
Do all LEDs and segments illuminate?
Yes
E
No
Malfunctioning
switch, LED or fluorescent
display tube.
Replace front control unit.
Turn temperature dial clockwise.
Advance to self-diagnosis STEP 2?
Yes
E
No
Malfunctioning temperature
dial.
Replace front control unit.
Turn temperature dial counterclockwise.
G
Return to self-diagnosis STEP 1?
Yes
No
Turn temperature dial clockwise.
q
A
(Go to next page.)
TROUBLE DIAGNOSES
Self-diagnosis (Cont’d)
H
H
H
H
H
H
H
H
HA-38
RHA970D
RHA392G
RHA501A
q
A
STEP 2 - SENSOR CIRCUITS ARE
CHECKED FOR OPEN OR SHORT
CIRCUIT.
Does code No.
appear on the dis-
play?
Yes
No
H
Turn temperature
dial clockwise.
Refer to the following chart for malfunctioning code
No.
(If two or more sensors malfunction, corresponding
code Nos. blink respectively two times.)
*1: Conduct self-diagnosis STEP 2 under sunshine.
When conducting indoors, aim a light (more than
60W) at sunload sensor, otherwise Code No.
will indicate despite that sunload sensor is func-
tioning properly.
q
B
(Go to next page.)
Code No.
Malfunctioning sensor
(including circuits)
Reference
page
Ambient sensor
−
In-vehicle sensor
−
Intake sensor
−
Sunload sensor*1
−
Air mix door motor PBR
−
Bi-level door motor PBR
−
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
EL
IDX
TROUBLE DIAGNOSES
Self-diagnosis (Cont’d)
H
H
H
HA-39
RHA869D
RHA497A
RHA498A
q
B
STEP 3 - MODE DOOR AND INTAKE
DOOR POSITIONS ARE CHECKED.
Does code No.
appear on the dis-
play?
Yes
No
H
Turn temperature
dial clockwise.
Mode or (and) intake door motor position switch(es)
is (are) malfunctioning.
(If two or more mode or intake doors are out of
order, corresponding code numbers blink respec-
tively two times.)
*1: If mode door motor harness connector is
disconnected, the following display pattern will
appear.
,
,
,
,
,
,
−
*2: If intake door motor harness connector is
disconnected, the following display pattern will
appear.
,
,
,
−
q
C
(Go to next page.)
Code
No.*1 *2
Mode or intake door
position
Reference
page
VENT
B/L
B/L 2
FOOT
FOOT/DEF
DEF
FRE
20% FRE
REC
TROUBLE DIAGNOSES
Self-diagnosis (Cont’d)
H
H
H
HA-40
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст