Instrument Panel, Gauges and Warning Indicators
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. Disconnect the gauge 30P connector control module.
3. Check for continuity 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 continuity?
YES - Go to step 4.
NO - Repair an open in the BLK/WHT or YEL/BLK wire between the gauge control module and fuel gauge sending unit.
4. Check for continuity between the No.3 and No.4 terminals of the gauge control module 30P connector and body ground.
Is there continuity?
YES - Repair a short in the BLK/WHT or YEL/BLK 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.