Ignition Coil And Ignitor Assembly - Subaru FORESTER 2001 Service Manual

Ignition
C: INSPECTION
Using oscilloscope and accurate tester, inspect the
following items, and replace if defective.
¼ Ignitor input signal
¼ Secondary coil resistance
¼ Poor contact in ignition coil and ignitor assembly
connector
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM, then connect
ST. <Ref. to EN(SOHCw/oOBD)-23, HOW TO
CHECK I/O SIGNAL FOR ECM, Engine Control
Module (ECM) I/O Signal.>
ST 498307600 CHECK BOARD KIT
3) Turn ignition switch to ON.
4) Measure voltage between ignition coil and igni-
tion assembly and body.
Connector & terminal:
(A) No. 5 — Engine ground
(A) No. 12 — Engine ground
Specified voltage: 3 — 4 V
5) Turn ignition switch to OFF.
6) Disconnect connector from ignition coil and
ignitor assembly.
7) Remove spark plug cords.
8) Measure resistance between spark plug cord
contact portions to check secondary coil.
Terminals / Specified resistance:
(A) — (B) / 13.0 ±2.6 kΩ
(C) — (D) / 13.0 ±2.6 kΩ

IGNITION COIL AND IGNITOR ASSEMBLY

S161015A10
S6M0378A
B2M0224B
IG(SOHCw/oOBD)-10
CAUTION:
If the resistance is extremely low, this indicates
the presence of a ground short circuit.
9) Check poor contact in ignition coil and ignitor
assembly connector.
B6M0810B