INSTRUMENTATION/DRIVER INFO (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION
DTC detecting condition:
The fuel gauge circuit is open or shorted.
Trouble symptom:
• Defective fuel gauge.
• Fuel level warning light blinks.
Wiring diagram:
Fuel gauge system Fuel Gauge System > WIRING DIAGRAM">
STEP | CHECK | YES | NO |
1.CHECK DTC.
Read the DTC of the combination meter using the Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">
Is DTC B1500 a current malfunction?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION">Go to Step 2.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION">Go to Step 7.
2.CHECK COMBINATION METER.
1) Check the operation of combination meter using Subaru Select Monitor.
2) From «Active Test», select «Fuel Meter Operation» and «Remaining fuel warning». System Operation Check Mode">
Is the operation of combination meter OK?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION">Go to Step 3.
Replace the combination meter. Combination Meter">
3.CHECK HARNESS (OPEN CIRCUIT).
1) Turn the ignition switch to OFF.
2) Disconnect the combination meter connector and the fuel sub level sensor connector and the fuel level sensor connector.
3) Using the tester, measure the resistance between terminals.
Connector & terminal
(i10) No. 25 — (R59) No. 1:
(i10) No. 37 — (R58) No. 2:
(R58) No. 1 — (R59) No. 2:
Is the resistance 10 ? or less?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION">Go to Step 4.
Repair the open circuit of harness or replace harness.
4.CHECK HARNESS (GROUND SHORT CIRCUIT).
Using the tester, measure the resistance between terminals.
Connector & terminal
(i10) No. 25 — Chassis ground:
(i10) No. 37 — Chassis ground:
Is the resistance 10 ? or less?
Repair the short circuit of harness or replace harness.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION">Go to Step 5.
5.CHECK FUEL SUB LEVEL SENSOR.
Check the fuel sub level sensor as a single part. Fuel Sub Level Sensor > INSPECTION">
Is the sensor normal?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION">Go to Step 6.
Replace the sensor. Fuel Sub Level Sensor > INSPECTION">
6.CHECK FUEL LEVEL SENSOR.
Check the fuel level sensor as a single part. Fuel Level Sensor > INSPECTION">
Is the sensor normal?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION">Go to Step 7.
Replace the sensor. Fuel Level Sensor > INSPECTION">
7.CHECK CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect connectors.
Is there poor contact of connector?
Repair or replace the poor contact of connector.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1500 FUEL SENDER OPEN/SHORT-CIRCUIT DETECTION">Go to Step 8.
8.CHECK CURRENT DATA.
Using the Subaru Select Monitor, display «Fuel level resistance» from «Data monitor». Read Current Data">
Does the data display 10 — 570 ??
Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE:
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
Replace the combination meter. Combination Meter">
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