Troubleshooting
Anti-lock Brake System Indicator
Light
Temporary Driving Conditions:
1 .
2 .
3.
The anti-lock brake system indicator light will come
on and the control unit memorizes the problem
under certain conditions.
NOTE: Problem codes explained on pages 19-46.
The tire(s) adhesion is lost due to excessive cor-
nering speed.
Problem codes: 5, 5-4, 5-8.
The vehicle loses traction when starting from a
stuck condition on a muddy, snowy, or sandy
road.
Problem code:
4-2, 4-4, 4-8.
l
When the parking brake is applied for more than
30 seconds while the vehicle is being driven.
Problem code: 2.
The vehicle is driven on extremely rough road.
The anti-lock brake system is OK, if the anti-lock
brake system indicator light: goes off after the
engine is restarted.
ANTI-LOCK BRAKE SYSTEM INDICATOR LIGHT
If you receive a customer’s report that the anti-lock
brake system indicator light sometimes comes on,
check the system using the ALB checker to confirm
whether there is any trouble in the system.
See page 19-41.
The anti-lock brake system indicator light will come
on and the control unit will store a problem code
when there is insufficient battery voltage to the
control unit. An example would be when the bat-
tery is so weak that the car must be jump-started.
After the battery is sufficiently recharged, the
lock system indicator light will work normally after
the engine is stopped and restarted.
However, after recharging the battery, the problem
code must be cleared from the control unit’s
memory by disconnecting the ALB 2.3 (No.
fuse for at least 3 seconds.
Anti-lock Brake System Indicator Light Circuit:
CAUTION: Use only the digital multimeter to
check the system.
1 .
The indicator light, does not go on when the igni-
tion switch is turned on.
Check the following items. If they are OK, check
the control unit connectors.
If not loose or disconnected, install a new control
unit and recheck:
l
Blown anti-lock brake system indicator light
bulb.
Open circuit in YEL wire between No. 5 (10 A)
fuse and gauge assembly.
Open circuit in BLU/WHT wire between gauge
assembly and control unit.
Loose component grounding of the control unit
to the body.
2.
The anti-lock brake system indicator light remains
ON or after the engine is started, however the
lock brake system indicator light does not blink any
code or sub-code. Check the following items:
Loose or poor connection of the wire harness at
the control unit.
Faulty ALB 2.3 (No.
fuse.
Open circuit in WHT/BLK wire between ALB 2.3
(No.
fuse and control unit.
Open circuit in
wire between fuse No.
4 (15 A) and fail safe relay(s).
Open or short circuit in the YEL/GRN wire bet-
ween fail safe relay(s).
Short circuit in BLU/WHT wire between gauge
assembly and control unit.
Open circuit in WHT/BLU wire between alter-
nator and control unit.
If the problem is not found substitute a known-good
control unit and recheck whether the warning light re-
mains ON.
19-44
Содержание Acura NSX 1991
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Страница 22: ...Special Tools Individual tool lists are located at the front of each section ...
Страница 23: ...Specifications Standards and Service Limits 3 2 Design Specifications 3 l 1 ...
Страница 39: ...Body Specifications m I 1 175 46 3 Unit mm in ...
Страница 40: ...Maintenance Lubrication Points 4 2 Maintenance Schedule 4 4 ...
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