663
Secondary Air Injection Valve
Secondary air injection short circuit to
ground or open circuit
View and note diagnostic tool sensor
data.
Make sure the SAI valve connector is
secure.
Disconnect engine ECM and proceed
to pinpoint test 1:
Secondary air injection short circuit to
battery positive
Disconnect engine ECM and SAI valve
and proceed to pinpoint test 5:
Check cable and terminal integrity:
- Engine ECM pin B02
- EMS Relay pin 5
- SAI solenoid pin 1
- SAI solenoid pin 2
Proceed to test 2 for P0412
Proceed to test 3 for P044F
Rectify fault, proceed to
test 7
Check cable for short circuit:
- Engine ECM pin B02 to ground
Locate and rectify wiring
fault, proceed to test 7
Check cable for short circuit:
- Engine ECM pin B02 to EMS Relay
pin 5
Locate and rectify wiring
fault, proceed to test 4
Check cable continuity:
- EMS relay pin 5 to SAI valve pin 1
- Engine ECM pin B02 to SAI valve
pin 2
Locate and rectify wiring
fault, proceed to test 7
Check resistance value, reconnect SAI
valve:
Engine ECM pin B02 to EMS Relay pin 5
Disconnect SAI valve and
proceed to test 6
Disconnect SAI valve and
proceed to test 6