Table of Contents
Advertisement
lT
Emission Control System
YES
{To page 11-143}
Fu€l Tank Pressure Sensor
The scan tool indicates Diagnostic Trouble Code (DTC) P0452: A low voltage problem in the Fuel Tank Pressure
sensor.
The fuel tank pressure sensor converts tuel tank absolute pressure into electrical signals and inputs the ECM.
Evaporative Emission (EVAP) Controls (cont'dl
OUTPUT
VOLTAGE
(vl
4.5
0.5
-7 kPe
l-50 mmHg,
-2 in.Hgl
+7 lPe
l5o mmHg,
2 in.Hgl
PRESSURE
\*
Eclrl CONNECToR o {lEPl
PTANK
(wltT/BLul
vcc2
IYEL/BLU}
Wire side of lemale terminals
FUEL TANK
PRESSURE
SENSOR
3P CONNECTOR
(C792)
The MIL ha3 beon roportod on.
OTC F0452 i3 storad.
Chock the vscuum lines:
Check the vacuum lines otthe fuel
tank pressure sensor for misrout-
ing, leakage, breakage and clog-
g i n g .
Are the vacuum lines OK?
Problgm verilication:
1. Do the ECM Reset Procedure.
2. Remove the fuel fill cap.
3. Turn the ignition switch ON lll).
4. Monitor the FTP sensor volt-
a g e w i t h t h e H o n d a P G M
T e s t e r , o r m e a s u r e v o l t a g e
b o t w e e n b o d y g r o u n d a n d
' ECM connector terminal D15.
Int6rmittent tailure, 3ystem i3 OK
at thb tirn6. Chock lor poor con-
n.clions or loo3e wire3 ot C421
{locltod rbovo under-d!.h fuso/
r.lay boxl, C510 lloc.ted undo.
rcc.rs panoll, C?92 Ituel trnk
o.6sura i€nior I lnd ECM.
ls there approx.2.5 V?
Check to. an opon in wi.a {VCC2
line):
1. Turn the ignition switch OFF.
2. Reinstall the fuel fill cap.
3. Disconnect the luel tank pres'
su re sensor 3P connector.
4. Turnthe ignition switch ON (ll).
5. Measure voltage between the
tuel tank pressure sensor 3P
connector terminals No, 1 and
N o . 2 .
R.pai. opcn in thg wir6 bdtwoon
thc fual tank pro$ure 3enlor and
tho EcM lDlo).
ls there approx. 5 V?
11 -1 4 2
Wire side oI temale terminals
Advertisement
Table of Contents
Troubleshooting
