Suzuki GA413 Service Manual page 456

6E-46 ENGINE AND EMISSION CONTROL SYSTEM
TABLE B-5 EVAPORATIVE EMISSION CONTROL SYSTEM CHECK
SYSTEM AND WIRING DIAGRAM
SYSTEM DESCRIPTION
ECM transmits duty signal to EVAP canister purge valve.
INSPECTION
STEP
1 Did you perform "ENGINE DIAGNOSTIC FLOW
TABLE" in Section 6?
2 1) Perform the following inspections.
"EVAP System Hose and Pipes"
"EVAP Canister Purge Valve"
"EVAP Canister"
Are they in good condition?
3 1) Disconnect EVAP hose.
2) Start engine and run it at idle.
3) Place your thumb over end of hose in order to
check for vacuum.
Is vacuum felt?
4 1) Turn ignition switch OFF position.
2) Disconnect ECM connectors.
3) Measure resistance between "A1" to "B5" of
ECM connectors.
Is resistance within 30-34W at 205C (685F)?
ACTION YES
Go to Step 2.
Go to Step 3.
Faulty "G/Y" wire.
If OK, substitute a
known-good ECM and
recheck.
Poor connection.
If OK, substitute a
known-good ECM and
recheck.
1. Fuel tank
2. EVAP canister
3. EVAP canister purge valve
4. EVAP canister purge valve connector
5. To intake manifold
6. ECM connector (A)
7. ECM connector (B)
8. ECM
9. Power supply from main relay
NO
Go to "ENGINE DIAG-
NOSTIC FLOW TABLE".
Repair or replace.
Go to Step 4.
Faulty "B/R", "G/Y" wire.
Poor connection of
EVAP canister purge
valve connector.