Subaru IMPREZA GD 2007 Series Manual page 1662

asieps_tobira_IM_US.book 331 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK ELECTRONIC THROTTLE CON-
TROL RELAY.
1) Turn the ignition switch to OFF.
2) Remove the electronic throttle control relay.
3) Measure the resistance between electronic
throttle control relay terminals.
Terminals
No. 2 — No. 4:
2 CHECK SHORT CIRCUIT OF ELECTRONIC
THROTTLE CONTROL RELAY POWER SUP-
PLY.
1) Turn the ignition switch to ON.
2) Measure the voltage between electronic
throttle control relay connector and chassis
ground.
Connector & terminal
(B309) No. 4 (+) — Chassis ground (–):
3 CHECK HARNESS BETWEEN ECM AND
ELECTRONIC THROTTLE CONTROL RELAY.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from the ECM.
3) Measure the resistance between ECM and
chassis ground.
Connector & terminal
(B136) No. 21 — Chassis ground:
DT:DTC P2109 THROTTLE/PEDAL POSITION SENSOR "A" MINIMUM STOP
PERFORMANCE
NOTE:
For the diagnostic procedure, refer to DTC P2101. <Ref. to EN(STI)(diag)-323, DTC P2101 THROTTLE AC-
TUATOR CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
Check
Is the resistance 1 MΩ or more? Go to step 2.
Is the voltage 10 V or more?
Is the resistance 1 MΩ or more? Repair poor con-
EN(STI)(diag)-331
ENGINE (DIAGNOSTICS)
Yes No
Replace the elec-
tronic throttle con-
trol relay.
Go to step 3.
Repair the short
circuit to power in
the harness
between ECM and
electronic throttle
control relay.
Repair the ground
tact of the ECM short circuit of har-
connector. ness between
ECM and elec-
tronic throttle con-
trol relay.