Signal Missing. Permanent Fault

Signal missing. Permanent fault

EFI-447 Pulsed secondary air injection system (PAIR) solenoid valve, signal

Checking power cable








- Ignition off.
- Disconnect connector from solenoid valve.
- Ignition on.
Connect a voltmeter between solenoid valve connector terminal 1 and ground.









The voltmeter should read battery voltage.

OK - Checking solenoid valve

Not OK - Checking for an open-circuit
Check power cable between solenoid valve terminal 1 and main relay (2/32) for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Then continue with Verification.

-------------------------------------------------

Checking for an open-circuit








- Check power cable between solenoid valve terminal 1 and main relay (2/32) for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Continue - Verification

-------------------------------------------------

Checking solenoid valve








- Ignition off.
Connect an ohmmeter to solenoid valve between terminals 1 and 2.









The ohmmeter should read 30 - 33 ohms.

OK - Checking the signal cable

Not OK - Try a new solenoid valve. Then continue with Verification.
Replacing component

-------------------------------------------------

Checking the signal cable








- Ignition off.
- Connect the breakout box and check ground terminals according to Connecting breakout box, connector A Connecting Breakout Box (Connector A).
Connect an ohmmeter between breakout box terminal #37 (A37) and solenoid valve connector terminal 2.









The ohmmeter should read approximately 0 ohms.

OK - Fault-tracing information
The cause of the diagnostic trouble code (DTC) has been loose connections in the engine control module (ECM) and/or solenoid valve connectors. Check connectors for contact resistance and oxidation and remedy in accordance with Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Then continue with Verification.

Not OK - Checking for an open-circuit
Check cable between solenoid valve terminal 2 and engine control module (ECM) #A37 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Then continue with Verification.

-------------------------------------------------

Checking for an open-circuit








- Check cable between solenoid valve terminal 2 and engine control module (ECM) #A37 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Continue - Verification

-------------------------------------------------

Fault-tracing information
The cause of the diagnostic trouble code (DTC) has been loose connections in the engine control module (ECM) and/or solenoid valve connectors.
- Check connectors for contact resistance and oxidation and remedy in accordance with Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Continue - Verification

-------------------------------------------------

Replacing component
- Try a new solenoid valve.





Continue - Verification

-------------------------------------------------

Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied as follows:












- Ignition off.
- Solenoid valve and engine control module (ECM) connected.
- Ignition on.




- Select Volvo Scan Tool (ST) to activate the solenoid valve.
- The solenoid valve should click when it is activated.

Is the solenoid valve working?

OK - VERIFIED

Not OK - VERIFICATION FAILED

------------------------

VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

-------------------------------------------------

Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

------------------------

Attempt New Test - Checking power cable

-------------------------------------------------