Diagnostic Method
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
| Malfunction Criteria | Threshhold Value | ||
|---|---|---|---|
| Measured primary pulley pressure | Exceed allowable value Upper Limit(1) or Below allowable value Lower Limit(1) |
||
|
|||
- When drive condition
Allowable value upper limit = [CFRUon * {(PS + SPST + PSCH + PSRG) * AS1} - ((PS + SPST) * AS2)] / AP - PPCH + PPST + MGN
Allowable value lower limit = [CFRLon * {(PS - SPST + PSCH + PSRG) * AS1} - ((PS - SPST) * AS2)] / AP - PPCH - PPST - MGN
- When driven condition
Allowable value upper limit = [CFRUof * {(PS + SPST + PSCH + PSRG) * AS1} - ((PS + SPST) * AS2)] / AP - PPCH + PPST + MGN
Allowable value lower limit = [CFRLof * {(PS - SPST + PSCH + PSRG) * AS1} - ((PS - SPST) * AS2)] / AP - PPCH - PPST - MGN
AP: Primary pressure receiving area 1
AS1: Secondary pressure receiving area 1
AS2: Secondary pressure receiving area 2
PS: Secondary Pressure
SPST: Secondary Pressure Sensor Tolerance
PSCH: Secondary centrifugal hydraulic pressure
PSRG: Hydraulic pressure conversion value of spring force
PPCH: Primary centrifugal hydraulic pressure
PPST: Primary Pressure Sensor Tolerance
MGN: False Detection Avoidance Margin
CFRUon: Cramp Force Ratio Upper Characteristic
CFRLon: Cramp Force Ratio Lower Characteristic
CFRUof: Cramp Force Ratio Upper Characteristic
CFRLof: Cramp Force Ratio Lower Characteristic
Time needed for diagnosis: 1 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.