Infiniti QX56 (JA60). Manual — part 498
DIAGNOSIS SYSTEM (BCM)
EXL-21
< FUNCTION DIAGNOSIS >
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Monitor Item
[Unit]
Description
TURN SIGNAL R
[OFF/ON]
Displays the status of the TURN RH switch in combination switch judged by BCM with the combination switch
reading function
TURN SIGNAL L
[OFF/ON]
Displays the status of the TURN LH switch in combination switch judged by BCM with the combination switch
reading function
HI BEAM SW
[OFF/ON]
Displays the status of the HI BEAM switch in combination switch judged by BCM with the combination switch
reading function
HEAD LAMP SW1
[OFF/ON]
Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
HEAD LAMP SW2
[OFF/ON]
Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
LIGHT SW 1ST
[OFF/ON]
Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
PASSING SW
[OFF/ON]
Displays the status of the PASSING switch in combination switch judged by BCM with the combination switch
reading function
AUTO LIGHT SW
[OFF/ON]
Displays the status of the AUTO LIGHT switch in combination switch judged by BCM with the combination
switch reading function
FR FOG SW
[OFF/ON]
Displays the status of the FR FOG switch in combination switch judged by BCM with the combination switch
reading function
FR WIPER HI
[OFF/ON]
Displays the status of the FR WIPER HI switch in combination switch judged by BCM with the combination
switch reading function
FR WIPER LOW
[OFF/ON]
Displays the status of the FR WIPER LOW switch in combination switch judged by BCM with the combination
switch reading function
FR WIPER INT
[OFF/ON]
Displays the status of the FR WIPER INT switch in combination switch judged by BCM with the combination
switch reading function
FR WASHER SW
[OFF/ON]
Displays the status of the FR WASHER switch in combination switch judged by BCM with the combination
switch reading function
INT VOLUME
[1 - 7]
Displays the status of wiper intermittent dial position judged by BCM with the combination switch reading
function
RR WIPER ON
[OFF/ON]
Displays the status of the RR WIPER switch in combination switch judged by BCM with the combination
switch reading function
RR WIPER INT
[OFF/ON]
Displays the status of the RR WIPER INT switch in combination switch judged by BCM with the combination
switch reading function
RR WASHER SW
[OFF/ON]
Displays the status of the RR WASHER switch in combination switch judged by BCM with the combination
switch reading function
EXL-22
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description
INFOID:0000000005369886
AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure low/coolant pressure high warning indicator
• Oil pressure gauge
• Rear window defogger
• Front wipers
• Tail, license and parking lamps
• Front fog lamps
• Headlamps (Hi, Lo)
• A/C compressor (magnetic clutch)
• Cooling fan
Operation Procedure
1. Close the hood and front door RH, and lift the wiper arms from the windshield (to prevent windshield dam-
age due to wiper operation).
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield before hand.
2. Turn ignition switch OFF.
3. Turn the ignition switch ON and, within 20 seconds, press the front door switch LH 10 times. Then turn the
ignition switch OFF.
4. Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
5. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.
CAUTION:
• If auto active test mode cannot be actuated, check door switch system. Refer to
.
• Do not start the engine.
Inspection in Auto Active Test Mode
When auto active test mode is actuated, the following 7 steps are repeated 3 times.
Operation
sequence
Inspection Location
Operation
1
Rear window defogger
10 seconds
2
Front wipers
LO for 5 seconds
→ HI for 5 seconds
WKIA4655E
DIAGNOSIS SYSTEM (IPDM E/R)
EXL-23
< FUNCTION DIAGNOSIS >
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Concept of auto active test
• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode
3
Tail, license and parking lamps
10 seconds
4
Front fog lamps
10 seconds
5
Headlamps
LO for 10 seconds
→ HI on-off for 5 seconds
6
A/C compressor (magnet clutch)
ON
⇔ OFF 5 times
7
Cooling fan
10 seconds
Operation
sequence
Inspection Location
Operation
WKIA5163E
Symptom
Inspection contents
Possible cause
Oil pressure low warning indicator does not operate
Perform auto active test.
Does the oil pressure low
warning indicator operate?
YES
• IPDM E/R signal input cir-
cuit
• ECM signal input circuit
• CAN communication signal
between ECM and combi-
nation meter
NO
• CAN communication signal
between IPDM E/R, BCM
and combination meter
Oil pressure gauge does not operate
Perform auto active test.
Does the oil pressure gauge
operate?
YES
IPDM E/R signal input circuit
NO
• CAN communication signal
between IPDM E/R, BCM
and combination meter
Rear window defogger does not operate
Perform auto active test.
Does the rear window defog-
ger operate?
YES
BCM signal input circuit
NO
• Harness or connector be-
tween A/C and AV switch
assembly and AV control
unit
• CAN communication signal
between BCM and IPDM E/
R
EXL-24
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (IPDM E/R)
CONSULT - III Function (IPDM E/R)
INFOID:0000000005369887
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC
DATA MONITOR
Monitor item
Any of the following components do not operate
• Front wipers
• Tail lamps
• License plate lamps
• Parking lamps
• Front fog lamps
• Headlamps (Hi, Lo)
Perform auto active test.
Does the applicable system
operate?
YES
BCM signal input system
NO
• Lamp or front wiper motor
malfunction
• Lamp or front wiper motor
ground circuit
• Harness or connector be-
tween IPDM E/R and appli-
cable system
• IPDM E/R (integrated relay
malfunction)
A/C compressor does not operate
Perform auto active test.
Does the A/C compressor op-
erate?
YES
• BCM signal input circuit
• CAN communication signal
between BCM and ECM
• CAN communication signal
between ECM and IPDM E/
R
NO
• Magnetic clutch malfunction
• Harness or connector be-
tween IPDM E/R and mag-
netic clutch
• IPDM E/R (integrated relay
malfunction)
Cooling fan does not operate
Perform auto active test.
Does the cooling fan operate?
YES
• ECM signal input circuit
• CAN communication signal
between ECM and IPDM E/
R
NO
• Cooling fan motor malfunc-
tion
• Harness or connector be-
tween IPDM E/R and cool-
ing fan
• IPDM E/R (integrated relay
malfunction)
Symptom
Inspection contents
Possible cause
Diagnosis mode
Description
Self Diagnostic Result
Displays the diagnosis results judged by IPDM E/R.
Data Monitor
Displays the real-time input/output data from IPDM E/R input/output data.
Active Test
IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor
The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item
[Unit]
MAIN SIG-
NALS
Description
MOTOR FAN REQ
[1/2/3/4]
×
Displays the status of the cooling fan speed request signal received from ECM via
CAN communication.
A/C COMP REQ
[OFF/ON]
×
Displays the status of the A/C request signal received from AV control unit via
CAN communication.
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