Check for DTCs with the HDS.
| DTC | Sectional | Valve |
|---|
| 121 | -01 | Right-front and
left-rear | master cut | | -02 | regulator | | -11 | | -21 | master cut | | -22 | | -23 | | -24 | regulator | | 122 | -01 | suction | | -21 | | -22 | | -23 | | 123 | -01 | Left-front and
right-rear | master cut | | -02 | regulator | | -11 | | -21 | master cut | | -22 | | -23 | | -24 | regulator | | 124 | -01 | suction | | -21 | | -22 | | -23 |
Is DTC 121-xx, 122-xx, 123-xx, or 124-xx indicated?
YES - Check for loose terminals in the VSA modulator-control unit 37P connector. If necessary, substitute a known-good VSA modulator-control unit and retest.n
NO - Intermittent failure, the system is OK at this time. Check for loose terminals at the VSA modulator-control unit 37P connector. Refer to intermittent failures troubleshooting.n |