Control Unit Input Test - Acura NSX 1997 Service Manual

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Security Alarm System
Control Unit Input Test ——
Remove the glove box, and disconnect the 22P connec-
tor and 16P connector from the control unit.
Inspect the connector and socket terminals to be sure
they are all making good contact.
If the terminals are bent, loose, or corroded, repair
them as necessary, and recheck the system.
If the terminals look OK, make the following input
tests at the connector.
— If any test indicates a problem, find and correct the
cause, then recheck the system.
— If all the input tests prove OK, the control unit
must be faulty; replace it.
Different wires with the same color have been given a
number suffix to distinguish them (for example,
1
YEL/GRN and YEL/GRN
*: Not used
Wire Test condition
Under all conditions
BLK
Under all conditions
YEL/BLU
Under all conditions
GRN
Ignition switch ON (II)
YEL
Table of Contents
2
are not the same).
Test: Desired result
Check for continuity to ground:
There should be continuity.
Check for voltage to ground: There
should be battery voltage.
Connect to ground: The
security indicator should come on.
Check for voltage to ground: There
should be battery voltage.
22P
CONNECTOR
16P CONNECTOR
Possible cause if result is not obtained
• Poor ground (G401, G402, G403)
• An open in the wire
• Blown No. 18 (20 A) fuse
• An open in the wire
• Blown No. 45 (20 A) fuse
• Faulty security indicator
• An open in the wire
• Blown No. 5 (15 A) fuse
• An open in the wire
SECURITY
CONTROL UNIT