Acura Integra 1998 Service Manual page 493

. OBD ll Scan Tool indicatcs Code
P1786.
. Soff-diagnGis E indicrtor light
indicat6 Codo '1,0.
M6a3ure FAS Vottago:
1. Start the engine and warm it
up to normal operatang temPer_
6ture (the radiator fan comes
on).
2. shift to E position.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON (ll)
and wait lor at least two sec-
onds.
5. Measlre the voltage between
the 819 and A13 or A26 termi-
nals.
Chsck for loo3r TCM connactot!.
lf necoslary, lubsihuto a known.
good TCM rnd r.chrck,
ls there approx. 5 V?
M6asuro FAs vohagoIECM sidol:
1. Turn the ignition switch OFF.
2. Disconnect the B (22P) connec-
tor lrom the TCM.
3. Turn the ignition switch ON (ll).
4. Measure the voltage Ag and
C9 terminals of tho ECM con-
nectors.
ls there approx. 5 V?
Chock for loore TCM connectoE.
lf noceilary, subrtitula a known-
good ICM rnd rcchock.
R e p a i r o p o n i n t h e F A S w i r c
b€(we€n the TCM snd ths ECM.
Electrical Troubleshooting
Troubleshooting Flowchart - FAS Signal
v
U
PG.iblo Cru!.
. Short o. opon FAS wira
. Feoltv ECM
To page 14-75
TCM CONNECTORS
WIRE SIDE OF FEMALE TERMINALS
WIRE SIDE OF FEMAI.T TEBMINAI-S
WIRE SIDE OF FEMALE TERMINALS
a
, i
,I
Chock FAS Wiro Continuity:
1. Turn the ignition switch OFF.
2. Disconnect the C (31P) con-
nector lrom the ECM.
3. Check lor continuity between
the C9 terminal of the ECM C
(31P) connector and the 819
terminal of the TCM B (22P)
14-76
ECM CONNECTORS
ECM CONNECTOR C I31P}