Honda Acura NSX 1991 Service Manual page 1148

Integrated Control Unit
A7 A6 A6 A4 A3 A2
A l 4 A l 3 A l 2 A l l A 1 0 A 9 A 9
View from terminal side
Lights-on Riminder System:
Test condition
No. Terminal
Under all conditions.
Under all conditions.
A9
2
3 1 s w i t c h
Driver's door opened.
Seat Belt Reminder System:
No. Terminal Test condition
Under all conditions.
1
Under all conditions.
2 A9
Ignition switch ON.
A5
3
Ignition switch ON.
4
Driver's seat belt not
buckled.
5 A l 3
Al
Test: desired result
Check for continuity to ground:
should be continuity.
Check for voltage to ground:
should be battery voltage.
Check for voltage to ground:
O N .
should be battery voltage.
Check for continuity to ground:
should be continuity.
NOTE: Before testing, remove
No. 34 (I 5A) fuse.
Check for voltage to ground:
should be battery voltage.
Check chime operation:
should activate each time the
battery is connected.
Test: desired result
Check for continuity to ground:
should be continuity.
Check for voltage to ground:
should be battery voltage.
Check for voltage to ground:
should be battery voltage.
Connect to ground: Seat belt
warning light should come on.
Check for continuity to ground:
should be continuity.
View from wire side
Possible cause (if result is not obtained)
Poor ground (G401, G402).
l
An open in the wire.
l
Blown No. 34 (I 5A) fuse.
l
An open in the wire.
l
Blown No. 5 (IOA) or No. 29
l
(50 A) fuse.
An open in the wire.
l
Faulty left door switch.
l
An open in the wire.
l
Blown No. 38 (15) fuse.
l
Faulty lighting switch.
l
An open in the wire.
l
Faulty taillight relay.
l
Faulty chime.
Chime
l
An open in the wire.
l
Possible cause (if result is not obtained)
Poor ground (G401, G402).
l
An open in the wire.
l
Blown No. 34 (15AI fuse.
l
An open in the wire.
l
Blown No. 5 (IOA) or No. 29
l
An open in the wire.
l
Blown No. 5 (lOA) fuse.
l
Blown bulb.
l
An open in the wire.'
l
Faulty seat belt switch.
l
Poor ground (G401, G402).
l
An open in the wire.
l