ENGINE (DIAGNOSTICS)(H4DOTC) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P2433 SECONDARY AIR INJECTION SYSTEM AIR FLOW /PRESSURE SENSOR CIRCUIT HIGH

DTC DETECTING CONDITION:

Immediately at fault recognition

CAUTION:

After repairing or replacing the defective part, perform the Clear Memory Mode and Inspection Mode .

WIRING DIAGRAM:

• LHD model

• RHD model

STEPCHECKYESNO

1.CHECK HARNESS BETWEEN ECM AND SECONDARY AIR COMBINATION VALVE LH CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from the ECM and secondary air combination valve LH.

3) Measure the resistance of the harness between the ECM and secondary air combination valve relay LH connector terminal.

Connector & terminal

(B134) No. 27 — (E41) No. 2:

(B134) No. 19 — (E41) No. 1:

(B134) No. 29 — (E41) No. 3:

Is the resistance less than 1 Ω?

Repair open circuit of the harness between the ECM and secondary air combination valve relay LH connector.

2.CHECK HARNESS BETWEEN ECM AND SECONDARY AIR COMBINATION VALVE LH CONNECTOR.

Measure the voltage between ECM and chassis ground.

Connector & terminal

(B134) No. 27 (+) — Chassis ground (−):

Is the voltage 5 V or more?

Repair the short to power supply in the harness between the ECM and secondary air combination valve relay LH connector.

Temporary poor contact occurs. Check the poor contact of connector.