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Attached Table 1：PCHUD software parameters explanations:
VRPM
VTHROT
VBARO
VMAP
VMAPEXP
VIGN
VCLTS
VIAT
STATUSBYTE5
VAFCMET
VBAROCMET
VCSINSYNSPRK
SATITRIG
CATLOENB
IF ENGSTATE=3
NISTBLIDLE
FO2REDY2
FCNO
FBLMCOR1
FCLCINT1
FCLCMUL1
IARDRPM
IARPMERR
FPWVC1
VO2
STATUSBYTE3
FO2STAT1
FCLREST1
FOSHTREN
FO2REDY1
IF IACV MODE=0
IAMTRLOST
IACMVIHB
VIGNS
FVE1
VMAPRANG
AFFNLAFR
SAESTA
SAIDLDYN
SPDWELL
IAINTEGOFST
IACVDSMP
engine speed
throttle position
BARO
manifold air pressure
expect manifold air pressure
ignition key voltage
cylinder temperature or coolant temperature
intake air temperature
STATUSBYTE5
airflow correction met
Baro update met
sequential spark enable
tip-in Spark Advance retard trigger
catalyst light-off logic enable
engine work in run state
stable warm idle
O2 ready
block learn memory cell
cylinder 1 block learn memory
integral of close loop correction
close loop correction
desired idle rpm
idle rpm error
base pulse width of cylinder 1
Oxygen sensor signal
STATUSBYTE3
cylinder 1 oxygen sensor signal rich lean state
cylinder 1 close loop correction reset
Oxygen sensor heater enable
cylinder 1 Oxygen sensor ready
idle airflow control valve close loop correction enable
IACV lost
IACV move disable
ignition state
cylinder 1 Volumetric efficiency
MAP read angle
target air fuel ratio
cylinder 1 Spark Advance
idle dynamic Spark Advance
dwell time
airflow integral of idle air control valve
desired position of idle air control valve
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Troubleshooting
