Honda Civic Service Manual page 804

8. Connect the No.4 terminal ofheatercontrol
connector A (14P) to body ground with a jumper
wire,
HEATER CONTROL PANEL CONNECTOR A I14P}
BLU
2 3 4
5 6
7
8
I
r 0 l x
11 12 l 3 t 4
JUMPER WIBE
Wire side of female terminals
Does the A/C system come on?
YES Replace the heater control panel.!
NO Refer to the multiplex control system (see
p a g e 2 2 - 1 6 8 ) . 1
Using the Backprobe Set, connect the No. 9
terminal of under-dash fuse/relay box connector
F ( 1 2 P ) t o b o d y g r o u n d w i t h a j u m p e r w i r e .
UNOER.DASH FUSE/RELAY BOX CONNECTOR F {12P}
9 .
2 5
6 1
B g l r o
t l l 2
BLU/WHT
JUMPER
WIRE
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
Does the NC system come on?
YES Go to step 10.
NO- Refer to the multiplex control system (see
p a g e 2 2 - 1 6 8 ) . 1
N O T E : C h e c k f o r m u l t i p l e x c o d e s i n m o d e
' 1 .
F o l l o w
the troubleshooting {or any codes found. lf no
codes are found, subsititute a known-9ood
m u l t i p l e x c o n t r o l u n i t a n d a E C M o n e a t a t i m e .
Disconnect the Ay'C pressure switch 2P connector
and under-dash fuse/relay box connector F { 12P).
1 0 .
'13.
21-33
11. Check for continuity between the No. 2 terminal of
the A,/C pressure switch 2P connector and the No. 9
terminal of under-dash fuse relav box connector
F t12Pt.
A/C PRESSURE SWITCH 2PCONNECTOR
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
UNDER.OASH FUSE/RELAY BOX CONNECTOR F (12P)
W i r e s i d e o f f e n a l e l e r r r i n a l '
ls there continuity?
YES Go to step 12.
NO Repair open in the wire between the
under-dash fuse/relay box and the A,,/C pressure
switch.I
Check for continuity between the No. 1 and No. 2
terminals of the A,/C pressure switch.
1 2 .
A/C PRESSURE SWITCH
ls there continuity?
YES Repair open in the wire between the heater
control panel and the A,/C pressure switch.l
N O G o t o s t e p 1 3 .
check for proper Ay'C system pressure.
ls the pressure within specitications?
YES Replace the AilC pressure switch.l
NO Repair the AilC pressure problem.I