Flow Too Low: Intermittent Fault

Flow too low: Intermittent fault

EFI-448 Pulsed secondary air injection system (PAIR) pump, flow fault

Checking hoses and pipes




- Check hose between pulsed secondary air injection system (PAIR) pump and pulsed secondary air injection system (PAIR) valve for pinching and damage.
- Check the vacuum hose with check valve between intake manifold and solenoid valve, and the hose between the solenoid valve and pulsed secondary air injection system (PAIR) valve for pinching and damage.
- Check pulsed secondary air injection system (PAIR) pump ground terminal 31/44 and pulsed secondary air injection system (PAIR) pump relay power supply terminal C2 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

Continue - Fault-tracing information
Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

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Yes - Attempt New Test

No - FAULT FOUND

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Attempt New Test - Checking hoses and pipes

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