Honda Civic Service Manual page 427

tFo135l
iPol4tl
Heated Oxygen Sensor (HO2SI Heater
('96 - 98 Mbdels,'99 - 00 Dl6Y5 engine with M/Tl
*: p0141
(To page 11-158)
**: D'16Y8 engane
The scan tool indicates Diagnostrc Trouble code (DTC) P0135: An electrical
probl€m in the Primary Heated
Oxygen Sensor (Primary HOiS) (Sensor 1) Heater system (Except D16Y5 engine with M/T)'
The;can tool indicates Diagnostic Trouble code (DTC) P0141: A problem in the secondary
Heated oxygen sensor
(secondarv HO2S) (Sensor 2) Heater circuit.
PRIMARY HO2S (Son.or 1l aP CONNECTOR
SECoNDARY HO2S tsensor 2l ilP CONNECTORT
Terminal side of male terminals
PRIMARY HOzS (SENSOR 1) 4P CONNECTOR ICl23I
SECONDARY HO2S ISENSOR 2) 4P CONNECTOR {C125I*
PO2SHIC, SO2SHTC
IBLK/WHT)
Wire side of female terminals
SECONDARY HO2S ISENSOR 2)
,tP CONNECTOR 1C782)'*
so2sHTC
{BLK/WHT)
Wire side oI female terminals
I
(cont'd)
11-157
- The MIL h.s boen Jeponed on.
- DTC P0135, and/or Polal .re
stoled.
Problem verificationl
1. Do the ECM/PCM Reset Pro-
ceduae,
2. Start the engine
lniermittent tailura, sYttam i! OK
at thi3 time, Chsck for Poor con'
n e c i i o n 3 o r l o o s e w i l G 3 a t
C131** (locat.d undo. right sido
ot dashl, C{32** (loc.ted under
middle ol dashl, C123 (PrimarY
HO2S. Sansor 1) C125 lc782l*r
{Socondery H02S, Sonsor 2l'
and EcM/PcM.
Check for an open or 3hort in tho
HO25:
1. Turn the ignition switch OFF.
2. Disconnect the HO2S (Primary
or Secondary*) (Sensor 1 or
Sensor 2) 4P connector'
3 . A t t h e H o 2 s s i d e , m e a s u r e
resistance between the HO2S
4P connector terminals No. 3
a n d N o . 4 .
ls there 10 - 40 0?
C h e c k f o r c o n t i n u i t y b e t w e e n
b o d y g r o u n d a n d t h e H O 2 S 4 P
c o n n e c t o r t e r m i n a l s N o . 3 a n d
N o . 4 i n d i v i d u a l l y
Chock for an oPen ot short in tho
wire |PO2SHTC, SO2SHTC* linol:
1. Turn the ignition switch ON (ll).
2. Measure voltage between the
HO2S 4P connector terminals
N o . 3 a n d N o . 4 .
( T o p a g e 1 1 ' 1 5 8 )