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6 CHECK IGNITION SPARK
1. Turn ignition switch “OFF”.
2. Disconnect ignition coil assembly from rocker cover.
3. Connect a known good spark plug to the ignition coil assembly.
4. Place end of spark plug against a suitable ground and crank engine.
5. Check for spark.
SEF575Q
OK or NG
OK © GO TO 7.
NG © Check ignition coil with power transistor and their circuit. Refer to EC-506.
7 CHECK INJECTOR
1. Turn ignition switch “OFF”.
2. Remove injector assembly.
Refer to EC-51.
Keep fuel hose and all injectors connected to injector gallery.
3. Disconnect all ignition coil harness connectors.
4. Turn ignition switch “ON”.
Make sure fuel does not drip from injector.
OK or NG
OK (Does not drip.) © GO TO 8.
NG (Drips.) © Replace the injector(s) from which fuel is dripping.
8 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
Trouble is fixed. © INSPECTION END
Trouble is not fixed. © Replace three way catalyst (Manifold).
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0420 (BANK 1), P0430 (BANK 2) THREE WAY CATALYST FUNCTION
Diagnostic Procedure (Cont’d)
EC-361
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