Pinpoint Test B: P1393 (P1398) VVT Solenoid Circuit High Input

P1393 (P1398) VVT solenoid circuit high input

NOTE: References in brackets are for Bank B (2)





TEST B: RETRIEVE DTCS

NOTE: Battery and or ECM disconnection prior to scanning will erase all data, ensure that the correct DTC is present.

Connect scan tool
Record DTC(s), freeze frame data and
GO to [B2]





B2: CHECK VVT COIL CONTINUITY
With VVT connector PI031-A bank or (PI032-B bank) disconnected, measure the resistance between the pins 1 and 2 at the VVT actuator
- Is the resistance >20 Ohms?
Yes
Renew the VVT solenoid and test the system for normal operation.
No
GO to [B3]





B3: CHECK SHORT TO B+
Remove fuse F12
With EM015, EM014, PI031 or (PI032) disconnected, measure the voltage between EM015/009 (EM015/008) and EM014/009
- 0V?
Yes
Reconnect EM015 and EM014 and replace fuse F12
GO to [B4]
No
Inspect EM015, PI031 or (PI032) for bent/pushed back pins or locate and repair the harness/connector PI001/016 or (PI001/027) Test the system for normal operation.





B4: CHECK B+ AT VVT SOLENOID
Measure the voltage between PI031/002 (PI032/002) and ground EM016L
- B+?
Yes
GO to [B5]
No
Inspect EM020/010, PI001, PI031 (PI032) for bent/pushed back pins or locate and repair harness/splice PIS06.





B5: CHECK HARNESS SHORT TO GROUND
With EM015 and EM014 disconnected, measure the insulation resistance between EM015/009 (EM015/008) and ground EM014/009
- Is the resistance > 10 M Ohms?
Yes
Do not reconnect
GO to [B6]
No
Inspect EM015, and EM014 for corrosion, bent/pushed back pins or locate and repair the harness/connector. Test the system for normal operation.





B6: CHECK HARNESS SHORT CORE TO CORE
With EM015, EM014 PI031 and PI032 disconnected, measure the insulation resistance between EM015/009 and EM015/008
- Is the resistance > 10 M Ohms?
Yes
Reconnect all connectors
GO to [B7]
No
Inspect EM015 and PI031 (PI032) for corrosion, bent/pushed back pins or locate and repair the harness/connector PI001/016 (PI001/027). Test the system for normal operation.

B7: END
Perform appropriate service drive cycle and check for the presence of DTC
- Has the fault code cleared?
Yes
STOP
No
Contact Jaguar Service