Infiniti I35 (A33). Manual — part 121
4
CHECK MOTOR RELAY POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector E162.
2. Check voltage between ABS actuator and electric unit (control unit) harness connector E162 terminal 15 (GY) and 17
(Y) and ground.
SBR163F
Does battery voltage exist?
Yes
©
GO TO 5.
No
©
Check the following.
I
Harness connector E162
I
Harness for open or short between ABS actuator and electric unit (control unit) and
fusible link
If NG, repair harness or connectors.
5
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND in Ground Circuit Check, BR-57.
Is ground circuit OK?
Yes
©
Replace ABS actuator and electric unit (control unit).
No
©
Check the following.
I
Harness connector E162
I
Harness for open or short between ABS actuator and electric unit (control unit) and
ground
If NG, repair harness or connectors.
6
REPLACE FUSIBLE LINK
Replace fusible link.
Does the fusible link blow out when ignition switch is turned “ON”?
Yes
©
GO TO 7.
No
©
INSPECTION END
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
Motor Relay or Motor (Cont’d)
BR-69
7
CHECK ABS ACTUATOR MOTOR POWER SUPPLY CIRCUIT
1. Disconnect battery cable and ABS actuator and electric unit (control unit) connector E162.
2. Check continuity between ABS actuator and electric unit (control unit) harness connector E162 terminal 15 (GY) and 17
(Y) and ground.
SBR164F
Does continuity exist?
Yes
©
Check the following.
I
Harness connector E162
I
Harness for open or short between ABS actuator and electric unit (control unit) and
fusible link
If NG, repair harness or connectors.
No
©
Check ABS actuator and electric unit (control unit) connector E162 pin terminals for dam-
age or the connection of ABS actuator and electric unit (control unit) harness connector
E162. Reconnect ABS actuator and electric unit (control unit) harness connector E162.
Then retest.
Low Voltage
NHBR0173
DIAGNOSTIC PROCEDURE
NHBR0173S01
1
INSPECTION START
ABS actuator and electric unit (control unit) power supply and ground circuit inspection
SBR165F
©
GO TO 2.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
Motor Relay or Motor (Cont’d)
BR-70
2
CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector E162. Check terminals for damage or loose connec-
tions. Then reconnect connector.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Yes
©
GO TO 3.
No
©
INSPECTION END
3
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector E162.
2. Check voltage between ABS actuator and electric unit (control unit) harness connector E162 terminal 15 (GY) and
ground.
SBR166F
Does battery voltage exist when ignition switch is turned ON?
Yes
©
GO TO 4.
No
©
GO TO 5.
4
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND
Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND in Ground Circuit Check, BR-57.
Is ground circuit OK?
OK
©
Check ABS actuator and electric unit (control unit) connector E162 pin terminals for dam-
age or the connection of ABS actuator and electric unit (control unit) harness connector
E162. Reconnect ABS actuator and electric unit (control unit) harness connector E162.
Then retest.
NG
©
Check the following.
I
Harness connector E162
I
Harness for open or short between ABS actuator and electric unit (control unit) and
ground
If NG, repair harness or connectors.
5
CHECK FUSE
Check 10A fuse 31 (Engine control) for control unit. Refer to POWER SUPPLY ROUTING in EL section.
Is fuse OK?
Yes
©
GO TO 6.
No
©
Replace fuse.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
Low Voltage (Cont’d)
BR-71
6
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT
Check continuity between battery and ABS actuator and electric unit (control unit) connector E162 terminal 15 (GY).
Does continuity exist?
Yes
©
Check battery. Refer to BATTERY in EL section.
No
©
Check the following.
I
Harness connector E162
I
Harness for open or short between ABS actuator and electric unit (control unit) and
fuse
If NG, repair harness or connectors.
Control Unit
NHBR0174
DIAGNOSTIC PROCEDURE
NHBR0174S01
1
INSPECTION START
ABS actuator and electric unit (control unit) power supply and ground circuit inspection
SBR167F
©
GO TO 2.
2
CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector E162.
Check terminals for damage or loose connections. Then reconnect connectors.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Yes
©
GO TO 3.
No
©
INSPECTION END
3
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT
Check voltage. Refer to “3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIR-
CUIT” in “Low Voltage”, BR-70.
Does battery voltage exist when ignition switch is turned ON?
Yes
©
GO TO 4.
No
©
Repair.
4
CHECK WARNING LAMP INDICATION
Check “SELF DIAGNOSIS RESULTS”, if “CONTROLLER FAILRE” is indicated on the screen.
Yes
©
Replace ABS actuator and electric unit (control unit).
No
©
Inspect the system according to the code No.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
Low Voltage (Cont’d)
BR-72
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