Acura NSX 1997 Service Manual page 916

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Ignition Control Module (ICM) Input Test
Disconnect the 8P connector from the ignition control
module (ICM).
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 ICM must be faul-
ty; replace it.
No. Wire Test condition
1
1
Under all conditions
BLK
2
2 BLK
1
Ignition switch "ON
3 WHT
(ID"
WHT/GRN
4
WHT/BLK
5
1
WHT/BLU
6
7 WHT/YEL
8 WHT/RED
Table of Contents
ICM
WHT/BLU
8P CONNECTOR
Test: Desired result
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be battery
voltage.
NOTE:
The tachometer should operate normally.
See section 11
lamp (MIL) blinks.
If necessary, perform an input test on the ICM
after finishing the fundamental tests for the igni-
tion system and fuel and emission systems.
WHT/GRN 1
BLK
1
WHT
WHT/BLK
1 WHT/RED
2
BLK WHT/YEL
Possible cause if result is not obtained
• Poor ground (G103)
• An open in the wire
• Blown No. 13 (30 A) fuse in the
engine compartment fuse/relay
box
• Faulty ignition coil
• An open in the wire
when the malfunction indicator
View from terminal side
23-93