Infiniti Q45. Manual — part 808
TROUBLE DIAGNOSIS FOR SYSTEM
SCS-49
C
D
F
G
H
I
J
K
L
M
A
B
SCS
3.
CHECK HARNESS BETWEEN ECM AND ACTIVE DAMPER SUSPENSION CONTROL UNIT
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector and active damper suspension control unit harness connector.
3.
Check continuity between ECM harness connector (A) F101 ter-
minal 103 and active damper suspension control unit harness
connector (B) B37 terminal 12.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
4.
CHECK ACTIVE DAMPER SUSPENSION CONTROL UNIT
Check active damper suspension control unit input/output signal. Refer to
SCS-20, "Active Damper Suspen-
sion Control Unit Input/Output Signal Reference Values"
OK or NG
OK
>> GO TO 5.
NG
>> Check active damper suspension control unit pin terminals for damage or loose connection with
harness connector. If any items are damaged, repair or replace damaged parts.
5.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK
>> INSPECTION END
NG
>> Perform self-diagnosis with ECM again. Refer to
EC-118, "SELF-DIAG RESULTS MODE"
Active Damper Suspension Select Switch
NES000CG
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
ACTIVE DAMPER SUSPENSION CONTROL UNIT TERMINALS AND REFERENCE VALUE
Data are reference value and are measured between each terminal and ground.
CAUTION:
When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminal.
Continuity should exist.
SEIA0781E
Monitored item
Content
Condition
Display value
SELECT SWITCH
[AUTO/SPORT]
Input condition from
active damper suspen-
sion select switch
Active damper suspension
select switch
(Engine running)
AUTO
AUTO
SPORT
SPORT
Terminal
Wire
color
Item
Condition
Data (Approx.)
13
P/B
Active damper suspension
select switch
Engine running
Active damper suspension select switch:
AUTO
0 V
Active damper suspension select switch:
SPORT
5 V
SCS-50
TROUBLE DIAGNOSIS FOR SYSTEM
DIAGNOSTIC PROCEDURE
1.
CHECK ACTIVE DAMPER SUSPENSION SELECT SWITCH SIGNAL
With CONSULT-II
1.
Start engine.
2.
Select “DATA MONITOR” mode for “ACT D/SUS” with CONSULT-II.
3.
Read out AUTO/SPOR switching action of “SELECT SWITCH”.
Without CONSULT-II
1.
Turn ignition switch “ON”.
2.
Check voltage between active damper suspension control unit
harness connector (A) terminal and ground.
OK or NG
OK >> GO
TO
5.
NG
>> GO TO 2.
2.
CHECK ACTIVE DAMPER SUSPENSION SELECT SWITCH SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect active damper suspension select switch harness connector.
3.
Turn ignition switch “ON”.
4.
Check voltage between active damper suspension select switch
harness connector (A) terminal 1 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check the following. If any items are damaged, repair or
replace damaged parts.
●
Harness for short or open between active damper
suspension control harness connector B37 terminal
13 and active damper suspension select switch harness connector M20 terminal 1.
Monitor item
Condition
Display
value
SELECT SWITCH
Active damper suspension
select switch
(Engine running)
AUTO
AUTO
SPORT
SPORT
SEIA0722E
Connector
Terminal
Condition
Voltage
(Approx.)
B37
13 -
Ground
Engine running
Active damper sus-
pension select switch:
AUTO
0 V
Active damper sus-
pension select switch:
SPORT
5 V
SEIA0723E
Connector
Terminal
Voltage (Approx.)
M20
1 - Ground
Battery voltage
SEIA0724E
TROUBLE DIAGNOSIS FOR SYSTEM
SCS-51
C
D
F
G
H
I
J
K
L
M
A
B
SCS
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect active damper suspension select switch harness connector.
3.
Check continuity between active damper suspension select
switch harness connector (A) M20 terminal 2 and ground.
Also check harness for short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to power in harness or con-
nectors.
4.
CHECK ACTIVE DAMPER SUSPENSION SELECT SWITCH
1.
Turn ignition switch “OFF”.
2.
Remove the active damper suspension select switch.
3.
Operate active damper suspension select switch (A) and check
continuity between active damper suspension select switch (A)
terminals.
OK or NG
OK
>> GO TO 5.
NG
>> Replace active damper suspension select switch.
5.
CHECK ACTIVE DAMPER SUSPENSION CONTROL UNIT
Check active damper suspension control unit input/output signal. Refer to
SCS-20, "Active Damper Suspen-
sion Control Unit Input/Output Signal Reference Values"
OK or NG
OK
>> INSPECTION END
NG
>> Check active damper suspension control unit pin terminals for damage or loose connection with
harness connector. If any items are damaged, repair or replace damaged parts.
Continuity should exist.
SEIA0735E
Terminal
Condition
Continuity
1 - 2
Active damper suspension select switch: AUTO
Yes
Active damper suspension select switch: SPORT
No
SEIA0725E
SCS-52
TROUBLE DIAGNOSIS FOR SYSTEM
Stop Lamp Switch
NES000HG
●
Check the following if “flickering pattern for 14” is detected in self-diagnosis results without CONSULT-II.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
ACTIVE DAMPER SUSPENSION CONTROL UNIT TERMINALS AND REFERENCE VALUE
Data are reference value and are measured between each terminal and ground.
CAUTION:
When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminal.
DIAGNOSTIC PROCEDURE
1.
CHECK STOP LAMP SWITCH SIGNAL
With CONSULT-II
1.
Start engine.
2.
Select “DATA MONITOR” mode for “ACT D/SUS” with CONSULT-II.
3.
Read out AUTO/SPOR switching action of “STOP LAMP SW”.
Without CONSULT-II
1.
Turn ignition switch “ON”.
2.
Check voltage between active damper suspension control unit
harness connector terminal and ground.
OK or NG
OK >> GO
TO
4.
NG
>> GO TO 2.
Monitored item
Content
Condition
Display value
STOP LAMP SW [ON/OFF]
Condition of brake pedal
operation
Brake pedal: Depressed
ON
Brake pedal: Released
OFF
Terminal
Wire
color
Item
Condition
Data (Approx.)
11
L/B
Stop lamp switch
Brake pedal: Depressed
Battery voltage
Brake pedal: Released
0 V
Monitor item
Condition
Display value
STOP LAMP SW
Brake pedal: Depressed
ON
Brake pedal: Released
OFF
SEIA0776E
Connector
Terminal
Condition
Voltage
(Approx.)
M37
11 - Ground
Brake pedal: Depressed
Battery voltage
Brake pedal: Released
0 V
SEIA0277E
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