Acura NSX 1997 Service Manual page 975

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Rear Window Defogger Timer System:
Terminal Test condition
Under all conditions
A8
Under all conditions
A9
Ignition switch ON (II)
A5
Defogger switch
WHT/RED pushed
Ignition switch ON (II)
A10
Oil Pressure Indicator System:
Terminal Test condition
Under all conditions
A8
Under all conditions
A9
Ignition switch ON (II)
A5 '
Engine running
2
WHT/BLU
Ignition switch OFF
Ignition switch ON (II)
YEL/RED
Start the engine.
Table of Contents
Test: Desired result
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be battery voltage.
Check for voltage to ground:
There should be battery voltage.
Check for continuity to ground:
There should be continuity as the
switch is pushed.
Attach to ground: The rear window
defogger should work and the
defogger switch indicator light
should come on.
Test: Desired result
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be battery voltage.
Check for voltage to ground:
There should be battery voltage.
Check for voltage to ground:
There should be battery voltage.
Check for continuity to ground:
There should be continuity.
Check indicator light operation.
If the light does not come on, attach
the YEL/RED terminal to ground: The
light should come on as the ignition
switch is turned ON (II).
Check for voltage to ground:
There should be battery voltage.
Possible cause if result is not obtained
• Poor ground (G401, G402, G403)
• An open in the wire
• Blown No. 34 (15 A) fuse
• An open in the wire
• Blown No. 5 (15 A) fuse
• An open in the wire
• Faulty defogger switch
• Poor ground (G401, G402, G403)
• An open in the wire
• Blown No. 4 (15 A) fuse
• Faulty defogger relay
• Blown bulb
• An open in the wire
Possible cause if result is not obtained
• Poor ground (G401, G402, G403)
• An open in the wire
• Blown No. 34 (15 A) fuse
• An open in the wire
• Blown No. 5 (15 A) fuse
• An open in the wire
• Faulty charging system
• An open in the wire
• Faulty engine oil pressure switch
• An open in the wire
• Blown bulb
• An open in the wire
• Insufficient oil
• Improper lubrication
• Faulty engine oil pressure switch
(cont'd)