Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

FF15 - Check PSPS Operation

- Key "OFF".

- Install tachometer.

- Start engine and idle in PARK/NEUTRAL.

- Disconnect Power Steering Pressure (PSP) switch.

- Jumper PSP circuit of PSP vehicle harness connector to chassis ground or SIG RTN.

- Does rpm increase?

Yes -- Replace PSP switch. Remove jumper. Re-evaluate symptom.

No -- Remove jumper. Go to FF16. FF16 - Check Continuity of PSPS Circuits