Acura 2002 RSX Service Manual page 92

Cruise Control Communication Circuit Troubleshooting (A/Tl
1. Start the engine.
2. Turn on the cruise control main switch. then drive
the vehicle to speeds over 25 mph (40 km/h)with
the cruise control.
Does the cruise control operate?
YES Go to step 3.
NO Check the cruise control unit(see page 4-52)
or cruise control actuator.l
3. Turn the ignition switch OFF.
4. Disconnect PCM connector D (17P) and cruise
control unit 14P connector.
5, Check ior continuity between PCM connector
t e r m i n a l D 1 2 a n d b o d y g r o u n d .
PCM CONNECTOR D {17P)
Wire side of female terminals
ls there continuity?
YES Repair a shortto ground in the wire between
PCM connector terminal D12 and the cruise control
u n i t
' l 4 P c o n n e c t o r t e r m i n a l N o . 8 . I
NO Go to step 6.
Reconnect PCM connector D (17P) and the cruise
control unit 14P connector.
7. Connect a voltmeter between cruise control unit
14P connector terminal No. I and body ground.
Test-drive the vehicle at speeds over 25 mph
(40 km/h) with the cruise control set, and watch the
voltmeter.
CRUISE CONTROL UNIT 14P CONNECTOR
2 3
4
5
6 7
8 I t 0
11
12 1 3 1 )
BLU,/OBN
W i r e s i d e o f f e m a l e t e r m i n a l s
ls therc about 1 V?
YES - Go to step 8.
NO Replace the cruise control unit.l
Connect a voltmeter between PCM connector
terminal D12 and body ground. Drive the vehicle at
speeds over 25 mph (40 km/h) with the cruise
control set, and watch the voltmeter.
PCM CONNECTOR D I17P}
W i r e s i d e o f I e m a l e t e r m i n e l s
ls there about 1 V?
YES Check for loose connectors. lf necessary
replace the PCM and recheck (see page 11-4).1
NO Repair an open in the wire between PCM
connectorterminal D12 and the control unit 14P
connector terminal No. 8.1
4-51