The C1108 code on a Nissan vehicle indicates a problem with the front left ABS/WS (Anti-lock Braking System/Wheel Speed) sensor. This article will guide you through diagnosing and potentially fixing this issue, focusing on a 2005 Nissan Titan Crew Cab LE 4WD as a case study.
Experiencing ABS and slip lights illuminating on your dashboard, along with the inability to engage 4WD, often points towards an ABS/WSS problem. In this particular case, a C1108 code was retrieved using a diagnostic tool, pinpointing the front left sensor. Prior to the lights appearing, the ABS system engaged unexpectedly a few times, hinting at a developing sensor issue. An incident involving impacting a pile of ice further suggests potential damage to the front left tire and possibly related components.
The first step in troubleshooting is to inspect the front left ABS/WS sensor. This involves visually checking the sensor for damage and ensuring it’s properly seated. While a visual inspection might not reveal all issues, it can rule out obvious problems like a disconnected or damaged sensor. Brake fluid levels should also be checked and confirmed to be within the recommended range, as this can also contribute to ABS issues.
Next, using a voltmeter, test the resistance of both front ABS/WS sensors. A significant difference in readings between the two sensors could indicate a faulty sensor on the side with the higher or lower reading (consult your vehicle’s service manual for the specific resistance values). This test helps determine if the sensor itself is malfunctioning.
A critical concern when dealing with a C1108 code is the possibility of damage to the reluctor ring. This ring, located on the wheel hub, is responsible for generating the signals read by the ABS/WS sensor. If the ring is damaged, the sensor won’t be able to accurately detect wheel speed. Inspecting the reluctor ring requires removing the tire and the sensor to visually examine the ring for any cracks, damage or missing teeth.
Unfortunately, replacing the reluctor ring on the front of a Nissan Titan can be challenging. Information on this procedure is often scarce, even in comprehensive service manuals. This raises the question of whether replacing the entire wheel hub assembly is necessary if the reluctor ring is damaged. While replacing the entire hub assembly might seem excessive, it might be the most practical solution if the ring is not replaceable separately. If the wheel hub assembly was recently replaced, it reduces the likelihood of the reluctor ring being the issue, however, the impact with the ice could have caused damage.
Finally, the intermittent activation of the ABS module after restarting the engine, accompanied by unusual noises, could further indicate a problem with the tone ring or a more complex issue within the ABS system itself. This symptom differs from a previous experience with a faulty rear right sensor, adding another layer to the diagnostic process.
In conclusion, troubleshooting a C1108 code in a Nissan involves a systematic approach, starting with visual inspections and basic tests before moving on to more complex procedures. If the sensor and reluctor ring appear to be in good condition, further diagnosis might be required to identify the root cause of the problem. This might involve using more advanced diagnostic tools or consulting a qualified mechanic. Replacing the entire wheel hub assembly might be the ultimate solution if the reluctor ring is damaged and cannot be replaced individually.
