Subaru IMPREZA 2002 Service Manual page 372

ENGINE MALFUNCTION INDICATOR LAMP (MIL)
C: CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT COME
ENGINE (DIAGNOSTICS)
ON.
DIAGNOSIS:
TROUBLE SYMPTOM:
WIRING DIAGRAM:
The CHECK ENGINE malfunction indicator lamp (MIL) circuit is open or shorted.
When the ignition switch is turned ON (engine OFF), MIL does not come on.
I =
4
0
- 9
N0.5
10
11
13
BATERY
1
SBF-4 SBF-1
m
-
@
0 -
EN(S0HC)-48
Step
1 CHECK OUTPUT SIGNAL FROM ECM.
1)Turn the ignition switch to ON.
2)Measure the voltage between ECM connec-
tor and chassis ground.
Connector & terminal
(8134) No. 11 (+)
-
Chassis ground ( -):
Check
Is the voltage less than 1 V?