ldleControlSystem DTCTroubleshooting(cont'd) DTCPl519:IACValveCircuitMalfunction
8. Checkfor continuitybetweenbody ground and IAC v a l v e3 P c o n n e c t otre r m i n a lN o . 1 .
1 . R e s e t h e E C M ( s e ep a g e1 1 - 4 ; .
IACVALVE3PCONNECTOR
2 . T u r nt h e i g n i t i o ns w i t c hO N ( l l ) . ls DTC P 1519indicated?
2
YES Go to step 3,
3
PGl {BLK)
NO Intermittentfailure,system is OK at this time. Checkfor poor connectionsor looseterminalsat the IACvalve and at the ECM.I 3. Turn the ignition switch OFF.
Wire side of femaleterminals
4. DisconnecttheIACvalve 3P connector. ls there continuity? 5. Turn the ignition switch ON (lli. YES Go to step 9. 6. MeasurevoltagebetweenIACvalve 3P connector t e r m i n a lN o . 2 a n d b o d yg r o u n d . IAC VALVE 3P CONNECTOR
NO Repairopen in the wire betweenthe IACvalve a n dG ' 1 0 1 . 1 9 . DisconnectECMconnectorB (25P).
Z
3
1 0 . Checkfor continuitybetweenbody ground and ECMconnectorterminal B23.
IGP{YEL/BLK}
ECM CONNECTORB (25P) l
I
2 10
3 'lt
20
W i r es i d eo f f e m a l tee r m i n a l s
4
12 21 22
5
,/1,/,/ ,/ ,/1,/,/ 23 ,/1,/ ia'
ls there battery voltage?
tacv(BLK/REDI
YES Go to step 7. Wiresideof femaleterminals NO Repairopen in the wire betweenthe IACvalve a n dt h e P G M - Fm l a i nr e l a y . I ls there continuity? 7 . Turn the ignition switch OFF. YES Repairshon in the wire betweenthe IAC v a l v ea n dt h e E C M( 8 2 3 ) . I NO
11-92
Go to step 11.