diagnotic solutions Archives - Import Car
Nissan Frontier: Finding Failures, Faults

Nissan uses two accelerator pedal position (APP) sensors to transmit a throttle position command.

Modern Fuel Control Diagnostics: Sorting Through the Datastream

When confronted with a fuel control problem on a modern vehicle, I’ll normally use short- and long-term fuel trims to determine if the problem is caused by one of many failures such as a vacuum leak or a leaking fuel pressure ­regulator. If you’re like me, you’ll occasionally access the air/fuel ratio (AFR) sensor serial