Subaru 2004 LEGACY Service Manual page 195

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
17 CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Measure the resistance between ECM con-
nectors.
Connector & terminal
(B136) No. 17 — (B136) No. 15:
(B136) No. 17 — (B136) No. 16:
(B136) No. 28 — (B136) No. 15:
(B136) No. 28 — (B136) No. 16:
18 CHECK HARNESS BETWEEN ECM AND AC-
CELERATOR POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Disconnect the connector from the acceler-
ator position sensor.
4) Measure the resistance between connector
terminals of accelerator position sensor.
Connector & terminal
(B315) No. 5 — (B315) No. 2:
Check
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
EN(H6DO)(diag)-264
Yes
Go to step 18. Repair the short
circuit to sensor
power supply.
Repair the poor Repair the short
contact in ECM circuit in harness
connector. between ECM
Replace the ECM connector and
if defective. <Ref. accelerator posi-
to FU(H6DO)-34, tion sensor con-
Engine Control nector.
Module (ECM).>
No