Operation CHARM: Car repair manuals for everyone.
Home >> Mazda >> 1995 >> MX-3 L4-1598cc 1.6L DOHC >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Exhaust Gas Recirculation >> Testing and Inspection
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

Exhaust Gas Recirculation: Testing and Inspection

Connect Special Service Tools As Shown:





1. Connect special service tools (SST)s to the engine control module (ECM) as shown.
2. Start engine. Drive vehicle and verify ECM terminals 1R and 1T read battery voltage while engine is still cold.
3. Warm engine to operating temperature.
4. Drive vehicle and verify Engine Signal Monitor (SST #49 9200 162A) green and red lights flash when SST is set to 1R and 1T.
5. Ground ECM terminal 1T with jumper wire. Engine should run rough or stall at idle.
pro multis · About Operation CHARM