Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Disconnect the low air pressure switch. Does the indicator lamp and tone alarm remain on? | -- | Go to Step 2 | Go to Step 3 |
2 | Inspect for a short to ground in CKT 33, CKT 602, CKT 606, and CKT 9 (BRN) between the low air pressure switch, the instrument cluster, and the multifunction alarm module. Is there a short to ground? | -- | Go to Step 4 | Go to Step 5 |
3 | Replace the low air pressure switch. Low Air Pressure Switch Replacement . Does the indicator lamp and tone alarm remain on? | -- | -- | System OK |
4 | Repair the short to ground in CKT 33, CKT 602, CKT 606, or CKT 9 (BRN) between the low air pressure switch, the instrument cluster, and the multifunction alarm module. Does the indicator lamp and tone alarm remain on? | -- | -- | System OK |
5 | Replace the low air pressure switch. Does the indicator lamp and tone alarm remain on? | -- | -- | System OK |
