OBD0145A
10AK1CONNECT SUBARU SELECT MONITOR
OR THE OBD-II GENERAL SCAN TOOL,
AND READ DATA.
1) Turn ignition switch to OFF.
2) Remove fuel filler cap.
3) Install fuel filler cap.
4) Connect Subaru Select Monitor or the OBD-II general
scan tool to data link connector.
5) Turn ignition switch to ON and Subaru Select Monitor or
the OBD-II general scan tool switch to ON.
H2M1326
6) Read the data on Subaru Select Monitor or the OBD-II
general scan tool.
Subaru Select Monitor
Designate mode using function key.
Function mode: F43
F43: Display shows pressure signal value sent from fuel
tank pressure sensor.
: Is the value less than 2.8 kPa in function
mode F43?
: Go to step10AK2.
: Go to next.
H2M1326
: Is the value more than 2.8 kPa in function
mode F43?
: Go to step10AK4.
: Repair harness and connector.
NOTE:
In this case, repair the following:
Open or short circuit in harness between fuel tank pres-
sure sensor and ECM connector
Poor contact in coupling connectors (B97, and B98 (LHD
only))
Poor contact in fuel tank pressure sensor
Poor contact in ECM connector
OBD-II general scan tool
For detailed operation procedures, refer to the OBD-II Gen-
eral Scan Tool Instruction Manual.
258
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code
B2M0535A
10AK2CHECK INPUT SIGNAL FOR ECM.
(USING VOLTAGE METER AND SUBARU
SELECT MONITOR.)
1) Measure voltage between ECM connector and chassis
ground.
: Connector & terminal
(B84) No. 21 (+)—Chassis ground ( ):
Is the voltage more than 4.5 V?
: Go to next step 2).
: Go to next.
B2M0535A
: Does the voltage change more than 4.5 V by
shaking harness and connector of ECM
while monitoring the value with voltage
meter?
: Repair poor contact in ECM connector.
: Replace ECM.
H2M1374B
2) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 4 (+)—Chassis ground ( ):
Is the voltage less than 0.2 V?
: Go to step10AK3.
: Go to next step 3).
H2M1326
3) Read data on Subaru Select Monitor.
Subaru Select Monitor
Designate mode using function key.
Function mode: F43
F43: Display shows pressure signal value sent from fuel
tank pressure sensor.
259
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code