Heated Oxygen Sensor Heater - Honda Civic Service Manual

I
Heated Oxygen Sensor (HO2S) Heater
i'ss - oo Mb-dels except D16Y5 engine with M/Tl
The scan toot indicates Diagnostic Trouble Code (DTC) P0135: An electrical
problem in the Primary Heated
Oxygen Sensor (Primary ttOiS) (Sensor 1) Heater system {Except D15Y5 engine
with M/T)'
The
-scan
tool indicates Diagnostic Trouble Code (DTC) P0141; A problem in the Secondary
Heated Oigen Sensor
(Secondarv HO2S) {Sensor 2) Heater circuit
Fo13sl
Fol11l
lntermiftent failuro, sYstom b OK
at thit limo. Ch6ck lor Poor oon'
nectiont or looso wita!
at
C131'* {loc.tod und.t right ido
ol drshl, C432'* (located undel
middlo of dashl, C123 (PrimarY
HOzS, Sensor 1) C125 (Ct82lr'
(socondary HO2S, Sensor 2)t
.nd ECM/PCM.
PRIMAFY HO2S ls.n.or ll rrP CONNECTOR
SECOITIDARY
HO2S (Srn.ol21 4P CONNECTOR'
Terminal side of male terminals
PRIMARY HO2S {SENSOR 1} ilP @NI{ECTOR lc123l
sEcoNDARY HO2S ISENSOR 2) aP @NNECTOR (C125)'
3l-, l-tl-t
Fo2sHrc.
so2sHrc
ver.t l ^-1 .'l {BLK/wHrl
1 1 ' ! ' l - l
|
--=-
I
u----{v)'---..-'
Wire side of {emale terminals
SECO'TIDARY Ho2S (SENSOR 2,
4P CONNESTOR {C7&llt'
so2sHTc
(BLKnflHTl IBLK/WHT)
(cont'd)
1 1 - 1 5 9
Wire side oI female terminals
r : p 0 1 4 1
{ T o p a g e 1 1 - 1 6 0 }
* * : D 1 6 Y g e n g i n e
- The MIL has been reponed on.
- DTC P0135. and/or P0141 are
storod.
Problem vorification:
1. Do the ECM/PCM Reset Pro-
cedute.
2. Stan the englne.
Chock foi an open or short in the
HO25:
1. Turn the ignition switch OFF
2. Disconnect the HO2S (Primary
or Secondary*) lSensor 1 or
Sensor 2) 4P connector'
3 . A t t h e H 0 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 n?
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
No.4 individuallY.
Check for an opon or short in lho
wire (PO2SHTC, SO2SHTC+ line):
'1. Turn the ignition switch ON (ll).
2. Measure voltage between the
H02S 4P connector termlnals
N o . 3 a n d N o . 4 .
{To page 11-160}