Block 13 Quiz Vehicle Diagnostics

Mode $06 OBD-II data shows:

• Real-time sensor values

• Freeze frame data

• MONITOR$ID test results

• Vehicle identification

PID "FUELSYS" showing "CL-OL" indicates:

• Closed loop at idle

• Open loop at idle

• Transition between modes

• Fault present

CAN bus error frame is identified by:

• 6 dominant bits

• 5 recessive bits

• 11-bit identifier

• 29-bit identifier

A fault code P0606 suggests:

• Sensor fault

• ECU processor fault

• Wiring issue

• Mechanical failure

Live data shows O2S11 switching at 0.1Hz. This indicates:

• Normal operation

• Lazy sensor

• Short circuit

• Open circuit

First step in diagnosing U0100 code is:

• Check wiring

• Replace module

• Update software

• Check network topology

Oscilloscope pattern shows CAN-H shorted to ground. You should:

• Check termination resistors

• Inspect wiring harness

• Replace ECU

• Clear codes

Freeze frame data helps diagnose:

• Intermittent faults

• Current faults

• Permanent faults

• All faults

PID "LONGFT1" at +25% indicates:

• Rich condition

• Lean condition

• Normal operation

• Sensor bias

Gateway module functions include:

• Protocol translation

• Data logging

• Network isolation

• Fault code clearing