Infiniti I35 (A33). Manual — part 122
CAN Communication Line
NHBR0175
DIAGNOSTIC PROCEDURE
NHBR0175S01
1
CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ABS actuator and electric unit (control unit) connector, and check the terminal
for deformation, disconnection, looseness, etc. If there is a malfunction, repair or replace the terminal.
2. Reconnect connector to perform self-diagnosis.
Is “CAN COMM CIRCUIT” displayed in the self-diagnosis display items?
Yes
©
Print out the self-diagnostic results. Refer to EL-450.
No
©
Connector terminal connection is loose, damaged, open or shorted.
Engine System
NHBR0176
DIAGNOSTIC PROCEDURE
NHBR0176S01
1
SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
MTBL1189
Are any items other than above indicated in self-diagnosis results?
Yes
©
Repair or replace harness or connector.
No
©
GO TO 2.
2
SELF-DIAGNOSIS RESULT CHECK 2
1. Perform the ECM self-diagnosis, and repair or replace harness or connector, then perform the ECM self-diagnosis
again.
2. Perform the ABS/TCS control unit self-diagnosis again.
Is inspection result OK?
OK
©
INSPECTION END
NG
©
Repair or replace harness or connector. Perform the self-diagnosis again.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
CAN Communication Line
BR-73
A/T System
NHBR0208
DIAGNOSTIC PROCEDURE
NHBR0208S01
1
SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
MTBL1190
Are any items other than above indicated in self-diagnosis results?
Yes
©
Repair or replace related parts.
No
©
GO TO 2.
2
SELF-DIAGNOSIS RESULT CHECK 2
1. Perform the TCM self-diagnosis, and replace harness or connector, then perform the TCM self-diagnosis again.
2. Perform the ABS/TCS control unit self-diagnosis again.
Is inspection result OK?
OK
©
INSPECTION END
NG
©
Repair or replace related parts.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
A/T System
BR-74
1. ABS Works Frequently
NHBR0188
1
CHECK WHEEL SENSOR
1. Check wheel sensor connector for terminal damage or loose connections.
2. Perform wheel sensor mechanical check.
Refer to “Wheel Sensor or Rotor”, BR-61.
Are wheel sensors functioning properly?
Yes
©
GO TO 2.
No
©
Repair.
2
CHECK FRONT AXLE
Check front and rear axles for excessive looseness. Refer to AX section, “Front Wheel Bearing”, “ON-VEHICLE SERVICE”
and “Rear Wheel Bearing”, “ON-VEHICLE SERVICE”.
Is front axle installed properly?
Yes
©
Go to “3. CHECK WARNING LAMP INDICATION” in “2. Unexpected Pedal Action”,
BR-75.
No
©
Repair.
2. Unexpected Pedal Action
NHBR0189
1
CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Is stroke excessively large?
SBR540A
Yes
©
Perform Preliminary Check. Refer to BR-54.
No
©
GO TO 2.
2
CHECK CONNECTOR AND PERFORMANCE
1. Disconnect ABS actuator and electric unit (control unit) connector E162.
2. Check whether brake is effective.
Yes or No?
Yes
©
GO TO 3.
No
©
Perform Preliminary Check. Refer to BR-54.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
TCS
1. ABS Works Frequently
BR-75
3
CHECK WARNING LAMP INDICATION
Ensure warning lamp remains off while driving.
SBR655E
Is warning lamp turned off?
Yes
©
GO TO 4.
No
©
Carry out self-diagnosis. Refer to BR-46.
4
CHECK WHEEL SENSOR
1. Check wheel sensor connector for terminal damage or loose connection.
2. Perform wheel sensor mechanical check. Refer to “Wheel Sensor Rotor”, BR-61.
Is wheel sensor mechanism OK?
Yes
©
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.
No
©
Repair.
3. Long Stopping Distance
NHBR0190
1
CHECK CONNECTOR AND PERFORMANCE
1. Cancel ABS by removing 40A [E] fusible link (ABS ACTR) for ABS solenoid valve relay.
2. Check stopping distance.
OK or NG
OK
©
Perform Preliminary Check and air bleeding.
NG
©
Go to “3. CHECK WARNING LAMP INDICATION” in “2. Unexpected Pedal Action”,
BR-75.
NOTE:
Stopping distance may be longer than vehicles without ABS when
road condition is slippery.
TROUBLE DIAGNOSES FOR SYMPTOMS
TCS
2. Unexpected Pedal Action (Cont’d)
BR-76
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