Subaru IMPREZA GD 2007 Series Manual page 170

asieps_tobira_IM_US.book 61 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Step
8 CHECK STARTER INTERLOCK RELAY.
1) Using the lead wire, connect the battery (+)
to the terminal No. 24 of starter interlock relay,
and the battery (–) to the terminal No. 26.
2) Measure the resistance between starter
interlock relay terminals.
Terminals
No. 27 — No. 28:
9 CHECK TRANSMISSION TYPE.
10 CHECK INPUT VOLTAGE OF ECM.
1) Turn the ignition switch to OFF.
2) Connect the starter interlock relay.
3) Disconnect the connectors from the ECM.
4) Measure the input voltage between ECM
and chassis ground after turning the ignition
switch to START position.
Connector & terminal
(B136) No. 20 (+) — Chassis ground (–):
11 CHECK INPUT VOLTAGE OF INHIBITOR
SWITCH.
1) Turn the ignition switch to OFF.
2) Connect the connector to ECM.
3) Disconnect the connector from inhibitor
switch.
4) Connect the connector to ignition switch.
5) Measure the input voltage between inhibitor
switch connector terminal and engine ground
after turning the ignition switch to START posi-
tion.
Connector & terminal
(B12) No. 12 (+) — Engine ground (–):
12 CHECK INHIBITOR SWITCH.
1) Place the select lever in "P" or "N" range.
2) Measure the resistance between inhibitor
switch terminals.
Connector & terminal
(T3) No. 11 — No. 12:
13 CHECK INPUT VOLTAGE OF ECM.
1) Turn the ignition switch to OFF.
2) Connect the starter interlock relay.
3) Disconnect the connectors from the ECM.
4) Measure the voltage between ECM and
chassis ground with ignition switch in START
depressing the clutch pedal.
Connector & terminal
(B136) No. 20 (+) — Chassis ground (–):
14 CHECK HARNESS BETWEEN STARTER IN-
TERLOCK RELAY AND CLUTCH SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from starter inter-
lock relay and connector.
3) Measure the resistance of harness between
starter interlock relay and clutch switch.
Connector & terminal
(B225) No. 26 — (B106) No. 2:
15 CHECK CLUTCH SWITCH.
Measure the resistance between clutch switch
terminals while depressing the clutch pedal.
Terminals
No. 1 — No. 2:
Diagnostics for Engine Starting Failure
Is the resistance less than 1 Ω? Go to step 9.
Is the transmission type AT?
Is the voltage 10 V or more?
Is the voltage 10 V or more?
Is the resistance less than 1 Ω? Repair the open or
Is the voltage 10 V or more?
Is the resistance less than 1 Ω? Go to step 15.
Is the resistance less than 1 Ω? Repair the open
EN(H4SO)(diag)-61
ENGINE (DIAGNOSTICS)
Check Yes
Go to step 10.
Go to step 11.
Go to step 12.
ground short circuit
of harness
between inhibitor
switch and starter
motor.
Repair the open
circuit of the har-
ness between
starter interlock
relay and starter
motor.
circuit of harness
between the ECM
and clutch switch.
No
Replace the starter
interlock relay.
Go to step 13.
Repair the open or
ground short circuit
of harness
between ECM and
starter relay.
Repair the open or
ground short circuit
of harness
between inhibitor
switch and starter
interlock relay.
NOTE:
Check the security
system. (if
equipped) <Ref. to
SL-21, Security
System.>
Replace the inhibi-
tor switch. <Ref. to
4AT-47, Inhibitor
Switch.>
Go to step 14.
Repair the open
circuit of the har-
ness between
starter interlock
relay and clutch
switch.
Replace the clutch
switch. <Ref. to
CL-34, Clutch
Switch.>