Operation CHARM: Car repair manuals for everyone.
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

Barometric Pressure Switch: Testing and Inspection

Component Inspection

MAP/BARO SWITCH SOLENOID VALVE

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.







2. Perform "MAP/BARO SW/V" in "ACTIVE TEST" mode with CONSULT-II.

3. Check the following.
- Condition: At idle under no-load




- CONSULT-II display




- Time for voltage to change

4. If NO, check solenoid valve as shown below.

Without CONSULT-II
1. Remove MAP/BARO switch solenoid valve.







2. Check air passage continuity.
3. If NG or operation takes more than 1 second, replace solenoid valve.