B1175
DTC B1175: Fuel Gauge Sending Unit Signals Input Error1. Do the fuel gauge sending unit test.
Is the fuel gauge sending unit OK?
YES - Go to step 2.
NO - Replace the fuel gauge sending unit
2. Reconnect the 5P connector to the fuel gauge sending unit.
3. Turn the ignition switch ON (II).
4. Check for voltage between the No. 3 and No. 4 terminals of the gauge control module 30P connector and No. 1 and No. 2 terminals of the fuel pump/fuel gauge sending unit 5P connector.
Is there less than 1 V?
YES - Go to step 5.
NO - Repair an open in the wire between the gauge control module and fuel gauge sending unit
5. Disconnect the gauge control module 30P and the fuel gauge sending unit 5P connectors.
6. Check for continuity between the No. 3 and No. 4 terminal of the gauge control module 30P connector and body ground.
Is there continuity?
YES - Repair a short in the wire.
NO - Inspect all pinfits between the gauge control module and the sending unit. If circuit integrity is good, and the problem still exist, swap gauge control module with a known-good one. If the problem is gone, replace the gauge control module.