Engine

Section 303-01 · Diagnosis and testing

Special tools

• Digital multimeter
• Generic scan tool

Symptom Chart

Symptom Chart

Pinpoint test A: P1392 (P1397) VVT solenoid circuit low input

P1392 (P1397) VVT solenoid circuit low input

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

Retrieve DTCS

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

1. 

1. Connect the scan tool

Have the DTC(s) and freeze frame data been recorded?

Yes → GO to A2.

Check fuse / relay

1. 

1. Check that fuse F12 is good and that EMS control relay is energized

OK?

Yes → GO to A3.

No → Rectify as required

Check vvt coil resistance

1. 

1. 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 less than 5 OHM or greater than 20 OHM?

Yes → Renew the VVT solenoid and test the system for normal operation.

No → GO to A4.

Check harness continuity

1. 

1. With EM015 and PI031 (PI032) disconnected, measure the resistance between EM015/009 (EM015/008) and PI031/001 (PI032/001)

Is the resistance < 0.5 OHM?

Yes → GO to A5.

No → Inspect harness / connectors EM015, PI031 (PI032), PI001/016 (PI001/027) for corrosion, damage, bent or pushed back pins and repair as required. Test the system for normal operation.

Check harness (ground) continuity

1. 

1. With EM014 disconnected, measure the resistance between EM014/009 and ground EM016L

Is the resistance < 0.5 OHM?

Yes → Reconnect EM014, EM015, PI031 or (PI032) GO to A6.

No → Inspect harness / connector EM014, ground stud and splice EMS37 for corrosion, damage, bent or pushed back pins and repair as required. Test the system for normal operation.

END

1. Perform appropriate service drive cycle and check for the presence of DTC.

Has the fault code cleared?

Yes → STOP

No → Contact Jaguar Service

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)

Retrieve DTCS

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

1. 

1. Connect the scan tool

Have the DTC(s) and freeze frame data been recorded?

Yes → GO to B2.

Check vvt coil continuity

1. 

1. 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 OHM?

Yes → Renew the VVT solenoid and test the system for normal operation.

No → GO to B3.

Check short to b+

1. 

1. Remove fuse F12

1. With EM015, EM014, PI031 or (PI032) disconnected, measure the voltage between EM015/009 (EM015/008) and EM014/009

0 V?

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.

Check b+ at vvt solenoid

1. 

1. 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.

Check harness short to ground

1. 

1. With EM015 and EM014 disconnected, measure the insulation resistance between EM015/009 (EM015/008) and ground EM014/009

Is the resistance > 10 MOHM?

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.

Check harness short core to core

1. 

1. With EM015, EM014 PI031 and PI032 disconnected, measure the insulation resistance between EM015/009 and EM015/008

Is the resistance > 10 MOHM?

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.

END

1. Perform appropriate service drive cycle and check for the presence of DTC

Has the fault code cleared?

Yes → STOP

No → Contact Jaguar Service

Pinpoint test C: P1396 VVT solenoid malfunction

P1396 VVT solenoid malfunction

Retrieve DTCS

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

1. 

1. Connect the scan tool

Have the DTC(s) and freeze frame data been recorded?

Yes → GO to C2.

Check vvt coil continuity

1. 

1. With VVT connector PI032 disconnected, measure the resistance between the pins 1 and 2 at the VVT actuator

Is the resistance >20 OHM?

Yes → Renew the VVT solenoid and test the system for normal operation.

No → GO to C3.

Check short to b+

1. 

1. Remove fuse F12

1. With EM015, EM014, PI031 and PI032 disconnected, measure the voltage between EM015/008 and EM014/009

0 V?

Yes → Reconnect EM015 and EM014 and replace fuse F12 GO to C4.

No → Inspect EM015, PI001 or PI032 for bent / pushed back pins or locate and repair the harness / connector. Test the system for normal operation.

Check b+ at vvt solenoid

1. 

1. Measure the voltage between PI032/002 and ground EM016L

B+ ?

Yes → GO to C5.

No → Inspect EM020/010 PI031 (PI032) for bent / pushed back pins or locate and repair harness / splice PIS06. Check fuse F12 is good and EMS control RELAY 1 energized. Test the system for normal operation.

Check harness short to ground

1. 

1. With EM015 and EM014 disconnected, measure the insulation resistance between EM015/008 and ground EM014/009

Is the resistance > 10 MOHM?

Yes → Do not reconnect GO to C6.

No → Inspect EM015, and EM014 for corrosion, bent / pushed back pins or locate and repair the harness / connector. Test the system for normal operation.

Check harness short core to core

1. 

1. With EM015, EM014, PI031 and PI032 disconnected, measure the insulation resistance between EM015/009 and EM015/008

Is the resistance > 10 MOHM?

Yes → Reconnect all connectors GO to C7.

No → Inspect EM015, PI031 and PI032 for corrosion, bent / pushed back pins or locate and repair the harness / connector PI001/016 or PI001/027. Test the system for normal operation.

Check harness continuity

1. 

1. With EM015 and PI032 disconnected, measure the resistance between EM015/008 and PI032/001

Is the resistance < 0.5 OHM?

Yes → GO to C8.

No → Inspect harness / connectors EM015, PI032 and PI001/027 for corrosion, damage, bent or pushed back pins and repair as required. Test the system for normal operation.

Check harness (ground) continuity

1. 

1. With EM014 disconnected, measure the resistance between EM014/009 and ground EM016L

Is the resistance < 0.5 OHM?

Yes → Reconnect EM014, EM015, PI031 or (PI032) GO to C10.

No → Inspect harness / connector EM014, ground stud and splice EMS037 for corrosion, damage, bent or pushed back pins and repair as required. Test the system for normal operation.

Check mechanical condition

1. Remove the VVT(s) and ensure that there is no foreign matter blocking the oil passageway

OK?

Yes → GO to C10.

No → Rectify as required

END

1. Perform appropriate service drive cycle and check for the presence of DTC.

Has the fault code cleared?

Yes → STOP

No → Contact Jaguar Service