Infiniti Q45. Manual — part 908
TROUBLE DIAGNOSIS FOR SYMPTOMS
WT-41
C
D
F
G
H
I
J
K
L
M
A
B
WT
2.
CHECK HARNESS BETWEEN LOW TIRE PRESSURE WARNING CONTROL UNIT AND COMBINA-
TION METER
1.
Turn ignition switch “OFF”.
2.
Disconnect combination meter harness connector and low tire pressure warning control unit harness con-
nector.
3.
Check continuity between low tire pressure warning control unit
harness connector (A) M84 terminal 3 and ground.
OK or NG
OK >> GO
TO
3.
NG
>> Repair short to ground in harness or connector.
3.
CHECK LOW TIRE PRESSURE WARNING LAMP
1.
Turn ignition switch “OFF”.
2.
Connect combination meter harness connector.
3.
Disconnect low tire pressure warning control unit harness connector.
4.
Turn ignition switch “ON”. (Do not start engine.)
Does low tire pressure warning lamps turn ON?
OK
>> GO TO 4.
NG
>> Replace combination meter. Refer to
DI-24, "Disassembly and Assembly for Combination Meter"
4.
CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT
Check low tire pressure warning control unit input/output signal. Refer to
WT-17, "Low Tire Pressure Warning
Control Unit Input/Output Signal Reference Values"
OK or NG
OK
>> GO TO 5.
NG
>> Check low tire pressure warning control unit pin terminals for damage or loose connection with
harness connector. If any items are damaged, repair or replace damaged parts.
5.
CHECK SYMPTOM
Check again.
OK or NG
OK
>> INSPECTION END
NG
>> Replace low tire pressure warning control unit. Refer to
WT-49, "Removal and Installation"
Continuity should no exist.
SEIA0751E
WT-42
TROUBLE DIAGNOSIS FOR SYMPTOMS
Low Tire Pressure Warning Lamp Stays ON When Ignition Switch Is Turned ON
NES0007I
DIAGNOSTIC PROCEDURE
1.
CHECK SYSTEM FOR LOW TIRE PRESSURE WARNING CONTROL UNIT
Perform self-diagnosis. Refer to
WT-21, "Self-Diagnostic Procedure"
.
Does the self-diagnostic results indicate any malfunctions?
YES
>> Perform trouble diagnosis. Refer to
WT-19, "SELF-DIAG RESULT MODE"
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY
1.
Turn ignition switch “OFF”.
2.
Disconnect low tire pressure warning control unit harness connector.
3.
Check voltage between low tire pressure warning control unit
harness connector (A) terminals and ground.
4.
Turn ignition switch “ON”. (Do not start engine.)
5.
Check voltage between low tire pressure warning control unit
harness connector (A) terminals and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check the following. If any items are damaged, repair or
replace damaged parts.
●
10A fuses [No. 1, 6, 21 located in the fuse block (J/B) No.1]. Refer to
●
Harness for short or open between battery and low tire pressure warning control unit harness
connector M84 terminal 1.
●
Harness for short or open between ignition switch and low tire pressure warning control unit
harness connector M84 terminals 2 and 4.
●
Battery and ignition switch. Refer to
Connector
Terminal
Voltage (Approx.)
M84
1 - Ground
Battery voltage
2 - Ground
0 V
4 - Ground
SEIA0746E
Connector
Terminal
Voltage (Approx.)
M84
1 - Ground
Battery voltage
2 - Ground
4 - Ground
SEIA0747E
TROUBLE DIAGNOSIS FOR SYMPTOMS
WT-43
C
D
F
G
H
I
J
K
L
M
A
B
WT
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect low tire pressure warning control unit harness connector.
3.
Check continuity between low tire pressure warning control unit
harness connector (A) M84 terminals 11.
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 HARNESS BETWEEN LOW TIRE PRESSURE WARNING CONTROL UNIT AND COMBINA-
TION METER
1.
Turn ignition switch “OFF”.
2.
Disconnect combination meter harness connector and low tire pressure warning control unit harness con-
nector.
3.
Check continuity between low tire pressure warning control unit
harness connector (A) M84 terminal 3 and combination meter
harness connector (B) M43 terminal 54.
OK or NG
OK >> GO
TO
5.
NG
>> Repair open circuit in harness or connectors.
5.
CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT
Check low tire pressure warning control unit input/output signal. Refer to
WT-17, "Low Tire Pressure Warning
Control Unit Input/Output Signal Reference Values"
OK or NG
OK
>> GO TO 6.
NG
>> Check low tire pressure warning control unit pin terminals for damage or loose connection with
harness connector. If any items are damaged, repair or replace damaged parts.
6.
CHECK SYMPTOM
Check again.
OK or NG
OK
>> INSPECTION END
NG
>> Replace low tire pressure warning control unit. Refer to
WT-49, "Removal and Installation"
Continuity should exist.
SEIA0748E
Continuity should exist.
SEIA0750E
WT-44
TROUBLE DIAGNOSIS FOR SYMPTOMS
Low Tire Pressure Warning Lamp Blinks When Ignition Switch Is Turned ON
NES0007J
SYMPTOM:
If warning lamp blinks below, the system is normal.
Blink Mode A
●
This mode shows transmitter status is OFF-mode.
Perform transmitter wake up operation. Refer to
DIAGNOSTIC PROCEDURE
1.
CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect low tire pressure warning control unit connector.
3.
Check continuity between low tire pressure warning control unit
harness connector (A) M84 terminal 8 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair short to ground in harness or connector.
2.
CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT
Check low tire pressure warning control unit input/output signal. Refer to
WT-17, "Low Tire Pressure Warning
Control Unit Input/Output Signal Reference Values"
.
OK or NG
OK
>> GO TO 3.
NG
>> Check low tire pressure warning control unit pin terminals for damage or loose connection with
harness connector. If any items are damaged, repair or replace damaged parts.
3.
CHECK SYMPTOM
Check again.
OK or NG
OK
>> INSPECTION END
NG
>> Replace low tire pressure warning control unit. Refer to
WT-49, "Removal and Installation"
SEIA0347E
Continuity should not exist.
SEIA0752E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст