On Board Diagnostics - OBD2 Autocom

Powertrain Management Module (PCM) performs the subsequent features in relation to:
OBD II Diagnostics:
Carry out micro-processor primarily based self diagnostics to be certain appropriate operation of the PCM and secure storage of Autocom   info in memory.

Carry out On-Board diagnostics in actual time and alert the driver by illuminating MIL in scenario of a fault execute powertrain management capabilities to lower emissions and meet OBD II regulations through open-loop operation at start out-up time.
Conduct powertrain control features to Autocom   lessen emissions and meet OBD II laws in closed-loop manage throughout regular operation.
Carry out microprocessor-primarily based self diagnostics to be sure right operation of the PCM and safe storage of OBD II diagnostic information in memory.
The PCM performs the subsequent self diagnostics:
· Confirm the checksum of the program memory in ROM with its perform and accurate version.
· Carry out go through and create Autocom  check of RAM cells for fault totally free memory Perform processor functions in CPU, peripheral gadgets which include A/D converters, watchdog timers, and registers to confirm that the processor is performing appropriately.
· Conduct checks on saved vehicle data and verify that the info is not corrupted and is inside of autoboss v30 realistic limits of motor vehicle operation.
· Carry out On-Board diagnostics in authentic time and alert the driver by illuminating MIL in case of a fault, by interspersing diagnostics with car command functions.
The diagnostics are categorized into priority levels from one to 8 or nine. The greatest priority level exams are performed each and every one millisecond, followed by subsequent priority degree checks each five milliseconds, 10 milliseconds, 20 milliseconds, 50 milliseconds, 100 milliseconds, 200 milliseconds, 500 milliseconds, and 1 second. The highest priority degree exams are people that impact security and emissions to a substantial degree in accordance to OBD II regulations. These comprise Oxygen sensor (lambda sensor), and fuel trim checks for the duration of closed loop operation of the motor vehicle. The subsequent elm 327 priority checks are the interrupt timers, and watchdog timers. The following priority assessments are sensors, together with EGO sensor, Throttle place sensor, Misfire detection, MAP sensor, Engine RPM sensor, MAF sensor, Crankshaft position sensor, and Engine coolant sensor. The subsequent priority tests are EGR intrusive tests, Catalytic converter's secondary air, and canister purge, fuel level sensor, pedal actuator, and ignition timer. The future priority checks are periodic self tests.