Acura NSX 1997 Service Manual page 677

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Operation Sequence Simulated by Modes of ALB Checker
NOTE: The wheel sensors and sensor wire harnesses are not checked by the ALB checker.
Mode 1: Sends the simulated driving signal
ABS control unit to check the system under the normal driving. There should be no kickback.
SIMULATED DRIVING SIGNAL
Mode 2: Sends the driving signal of each wheel, then sends the lock signal of the left-rear wheel to the ABS control unit to
check the system under left-rear wheel lock. There should be kickback.
SIMULATED DRIVING SIGNAL
Mode 3: Sends the driving signal of each wheel, then sends the lock signal of the right-rear wheel to the ABS control unit
to check the system under right-rear wheel lock. There should be kickback.
SIMULATED DRIVING SIGNAL
Mode 4: Sends the driving signal of each wheel, then sends the lock signal of the left-front wheel to the ABS control unit
to check the system under left-front wheel lock. There should be kickback.
SIMULATED DRIVING SIGNAL
Mode 5: Sends the driving signal of each wheel, then sends the lock signal of the right-front wheel to the ABS control unit
to check the system under right-front wheel lock. There should be kickback.
SIMULATED DRIVING SIGNAL
Inspection Points
If the ABS indicator light comes on and the system stops during the inspection, confirm the DTC and perform the appro-
priate troubleshooting for the code.
If there is no kickback in modes 2 through 5, and the ABS indicator light does not come on, the following items are proba-
ble causes:
• Pressure switch stuck ON
• Clogged or stuck solenoid outlet valve
• Modulator wire harness connectors improperly connected
Table of Contents
of each wheel to the