Test B: Incorrect Fuel Gauge Indication

PINPOINT TEST B: INCORRECT FUEL GAUGE INDICATION

B1-B3:

B3-B6:

B6-B9:

B9-B10:

B11-B14:

Normal Operation
The fuel level sensor receives a reference voltage signal from the instrument cluster through circuit 29 (YE/WH), and returns the fuel level signal to the instrument cluster through circuit 1843 (BK/OG). The fuel level is determined using a variable resistance fuel sender unit, with an approximate resistance range between 15 ohms ± 2 ohms at empty (E) and 160 ohms ± 4 ohms at full (F). The instrument cluster interprets this signal and commands the fuel gauge to sweep to the correct level.

DTC B1202 - is a continuous and on-demand DTC that sets if the instrument cluster detects an open or short to voltage on the fuel level signal circuit 29 (YE/WH).

DTC B1204 - is a continuous and on-demand DTC that sets if the instrument cluster detects a short to ground on the fuel level signal circuit 29 (YE/WH).

Possible Causes
- Circuit 29 (YE/WH) open, short to ground or voltage
- Circuit 1843 (BK/OG) open or short to voltage
- Fuel pump module
- Fuel level sensor
- Fuel tank
- Instrument cluster