Dtc P0118: Ect Sensor Circuit High Voltage - Honda S2000 Service Manual

DTC P0118: ECT Sensor Circuit High Voltage
1 . T u r n t h e i g n i t i o n s w i t c h O N ( l l ) .
2. Check the ECT with the scan tool.
ls
4"F ( 20"C) or less (or L-Limit in Honda
mode ot PGM Tester) or 5 V indicated?
YES Go to step 3.
NO Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the ECT sensor and at the ECM. !
3. Turn the ignition switch OFF.
4. Disconnect the ECT sensor 2P connector.
5. Connect ECT sensor 2P connector terminals No. 1
a n d N o . 2 w i t h a j u m p e r w i r e .
ECT SENSOR 2P CONNECTOR
t \
SG2 IGRN/YEL)
> 2 /
\,..- -,"
ECT {RED/WHTI
JUMPER WIRE
Wire side of female terminals
T u r n t h e i g n i t i o n s w i t c h O N ( l l ) .
Check the ECT with the scan tool.
ls
4"F ( 20'C) ot less (or L-Limit in Honda
mode ot PGM Tester) or 5 V indicated?
YES- Go to step 8.
NO Replace the ECT sensor.l
6 .
7 .
8.
9 .
1 0 .
1 1 .
Turn the ignition switch OFF.
Connect ECM connector terminals C18 and C26
with a jumper wire.
ECM CONNECTOR C {31P)
2 4 5 7 8 9 1 0
t l
12
1 4
1 7
1 8
m
2
24
25 26
n
+
n
30
ECT IRED/WHT)
SG2 {GRN/YEL)
JUMPER WIRE
Wire side of female terminals
Turn the ignition switch ON (ll).
Check the ECT with the scan tool.
ls
4'F (- 20'C) or less (or L-Limit in Honda
mode ol PGM Testet) or 5 V indicated?
YES Substitute a known-good ECM and recheck
(see page 11-5). lf normal ECT is indicated, replace
t h e o r i g i n a l E C M . I
NO- Repair open in the wire between the ECM (C
18, C26) and the ECT sensor.l
11-49