P0414

SECONDARY AIR INJECTION CONTROL VALVE





Fault Symptom.
CHECK ENGINE lamp (MIL) on.

Conditions.
P0412
^ Engine speed above 80 rpm.
^ Battery voltage 7.5-17 V.
^ Shorting to battery positive (B+).

P0413
^ Engine speed above 380 rpm.
^ Battery voltage 7.5-17 V.
^ Open circuit.

P0414
^ Engine speed above 80 rpm.
^ Battery voltage 7.5-17 V.
^ Shorting to ground.

Diagnostic Help.
The secondary air injection control valve can be activated with the ISAT scan tool.
^ Select "ACTIVATE".
^ Select "SECONDARY AIR VALVE".

The command activates the secondary air injection control valve at a frequency of 0.5 Hz for 30 seconds.

Check The Wiring.
Intermittent faults may occur as a result of temporary short circuits and breaks in the wiring. Jiggle the wiring at several points and in different directions to ascertain whether the wiring harness, including any connectors, is causing the trouble. Observe the multimeter, ISAT scan tool or test lamp while doing this.





Diagnostic Procedure.
1. Check the secondary air injection control valve's power supply

- Unplug the secondary air injection control valve's 2-pin connector.
- Turn the ignition switch to the ON position.
- Connect the test lamp to:
^ pin 1 and battery negative (B-)

The test lamp should light up ?

Did the test lamp light up?
YES: Continue with point 2.
NO: Check fuses 19 and 12 in the engine bay's main fuse box.

Check the lead in question and repair or replace it if necessary. Then continue with point 3.





2. Check the control module's secondary air injection control valve output

- Connect the ISAT Scan Tool.
- Turn the ignition switch to the ON position.
- Connect a test lamp to:
^ Battery positive (B+) and pin 2.
- Select "ACTIVATE".
- Select "SECONDARY AIR VALVE".

The lamp should flash at a frequency of 0.5 Hz for 30 seconds.

Lamp flashing?
YES: Change the secondary air injection control valve and continue with point 3
NO: Check the lead in question and repair or replace it if necessary. Then continue with point 3.





3. Final check

- Clear the diagnostic trouble code.
- Implementation of driving cycle:
^ Drive the car at varying engine loads and rpm for 5 minutes.
- Evaluation of driving cycle:
^ Check whether the diagnostic trouble code has recurred.

Has the diagnostic trouble code recurred?
YES: Continue at "Before Replacing a Control Module". Component Tests and General Diagnostics
NO: The steps taken to rectify the fault were correct.