Acura Integra 1998 Service Manual page 1154

lgnition Control Module (lCM) Input Test
N O T E :
a See section 1 1 if the malfunction indicator lamp (MlLl
has been reported on.
a Perform an input test for the ignition control module
(lCM) after finishing the fundamental tests for the ig-
nition system and the fuel and emissions systems.
a The tachometer should operate normally.
1. Remove the distributo. ignition (Dl) cap, the rotor,
and the leak cover.
2. Disconnect the BLK/YEL, WHT/BLU, YEL/GRN, and
BLU wires from the lCM.
3. Turn the ignition switch ON {ll}. Check for voltage
between the BLK/YEL wire and body ground.
There should be battery voltage.
a lf there is no battery voltage, check the BLKiYEL
wire between the ignition switch and the lCM.
a It there is battery voltage, go to step 4,
)
I
)
BLU WIRE
YEL/GRN I,\'IRE
4. Turn the ignition switch ON (ll). Check for voltage
between the WHT/BLU wire and body ground.
There should be battery voltage.
a lf there is no battery voltage, check:
- ignition coil.
- WHT/BLU wire between the ignition coil and
t c M .
a lf there is battery voltage, go to step 5.
5. Disconnect the 32P connector from the ECM, and
check for continuity on the YEUGRN wire between
the ICM and ECM.
There should be continuity.
6. Check for continuity on the YEL/GRN wire to body
g r o u n o .
There should be no continuity.
7 . Reconnect the ECM 32P connector.
D i s c o n n e c t t h e g a u g e a s s e m b l y 1 3 P c o n n e c t o r ,
TCM 26P connector, and cruise control l4P connector.
9. Check for continuity on the BLU wire between the
ICM and tachometer.
There should be continuity.
'10. Check for
continuity on the BLU wire to body ground.
There should be no continuity.
1 1 . lf all the tests are normal, reconnect the connectors,
and replace the lCM.
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