Acura 3.5 RL Manual page 399

(From page 11-70)
Check for an open in the wire or
bulb (MIL line):
1. Turn the ignition switch OFF.
2. Connect PCM connector ter-
minal A7 and body ground
with a jumper wire.
3. Turn the ignition switch ON (II).
Does the MIL come on?
YES
Substitute a known-good PCM
and recheck. If symptom/indica-
tion goes away, replace the origi-
nal PCM.
Repair open in the wires
between the PCM (A7) and
gauge assembly.
Replace the MIL bulb.