Pinpoint Test A: P1392 (P1397) VVT Solenoid Circuit Low Input
P1392 (P1397) VVT solenoid circuit low inputNOTE: References in brackets are for Bank B (2)
TEST A: 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 [A2]
A2: CHECK FUSE/RELAY
Check that fuse F12 is good and that EMS control relay is energized
- OK?
Yes
GO to [A3]
No
Rectify as required
A3: CHECK VVT COIL RESISTANCE
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 Ohms or greater than 20 Ohms?
Yes
Renew the VVT solenoid and test the system for normal operation.
No
GO to [A4]
A4: CHECK HARNESS CONTINUITY
With EM015 and PI031 (PI032) disconnected, measure the resistance between EM015/009 (EM015/008) and PI031/001 (PI032/001)
- Is the resistance < 0.5 Ohms?
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.
A5: CHECK HARNESS (GROUND) CONTINUITY
With EM014 disconnected, measure the resistance between EM014/009 and ground EM016L
- Is the resistance < 0.5 Ohms?
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.
A6: END
Perform appropriate service drive cycle and check for the presence of DTC.
- Has the fault code cleared?
Yes
STOP
No
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