Honda Civic 1998 Service Manual page 274

PGM-FI System
Primary Heated Oxygen Sensor (Primary HO2SI (Sensor 1) {Except D16Y5
engine {M/Tll (cont'dl
[FO13t
The scan tool indicates Diagnostic Trouble Code (DTC) P0'132: A high voltage problem in the Primary Heated
:
Oxygen Sensor (Primary HO2S) (Sensor 1) circuit.
PRIMARY HO2S lsensor 1l ,lP CONNECTOR
PHO2S
{WHT)
sG2
{GRN/
BLKI
Wire side of female terminals
PHO2S (WHTI (GRN/BLKI
ECM/PCM CONNECTOR D {16PI
JUMPER WIRE
ffi
sG2
I
l 0 1 1
12
t 3
t 6
The MIL hes be€n reooned on.
DTCP0132 b stored.
Problem vedfication:
'1. Do the ECM/PCM Reset Pro-
cedure.
2 . S t a r t t h e e n g i n e . H o l d t h e
engine at 3,000 rpm with no
load {A,/T in E or E position,
M/T in neutral) untilthe radia-
tor fan comes on,
3. Test drive with the Arr in E
position (M/T in 4th gear).
4 . C h e c k t h e P r i m a r y H O 2 S
(Sensor 1) output voltage with
the scan tool during decelera-
tion using completely closed
throttle.
Intermittent failuro, system b OK
at this time. Check tor ooor con-
nections or loose wires at C123
lPrimary HO2S, Sonsor 1) and
ECM/PCM.
Does the voltage stay at 1.0 V
or more?
Ch€ck for an op€n in the Primary
H02S:
1. Turn the ignition switch OFF.
2. Disconnect the Primary HO2S
(Sensor 1l 4P connector.
3 . C o n n e c t t h e P r i m a r y H 0 2 S
(Sensor 1) 4P connector termi-
n a l s N o . ' l a n d N o . 2 w i t h a
4. Turn the ignition switch ON (ll).
5 . C h e c k t h e P r i m a r y H 0 2 S
(Sensor 1l output voltage with
the scan iool.
lsthere 1.0 V or more?
C h e c k t o r . n o p e n i n t h e w i r e
IPHO2S line):
1. Turn the ignition switch OFF.
2. Connect ECM/PCM connector
terminals D7 and D11 with a
3. Turn the ignition switch ON lll).
4 . C h e c k t h e P r i m a r y H 0 2 S
(Sensor 1) output voltage with
the scan tool.
Repai. open in thc wire betwoen
E C M / P C M ( D 7 ) e n d P r i m e r y
HO2S {Son3or 1} .
ls there 1.0 V or more?
Subltituto . known-good ECM/
PCM and roch.ck. lf 3ymptom/
indic.tion goe3 away, replace
the originel ECM/PCM.
1 1 - 8 6
Wire side of female terminals