ServiceManual-RocketIll

FaultCode

Possiblecause

Action

P0638

2ndthrottleactuatormotorIwiringfault

View&note"freezeframe"data ifavailable.

View&note"sensor"data

^{Ensure actuator connector} issecure.

^{DisconnectECMandproceedto}pinpointtest1:

Test

Result

Action

1

Checkcableandterminalintegrity:

OK

Proceedtotest2

-ECMpin821

Faulty

Rectifyfault,proceedtotest7

-ECMpin822

-ECMpin812

-ECMpin804

2

Checkresistancevalue:

• ECM pin 821toECMpin 822

• ECMpin812toECMpin804

4nto10n

Disconnectactuatorandproceedtotest3

Opencircuit

Proceedtotest4

Shortcircuit

Disconnectactuatorandproceedtotest5

3

Checkcablecontinuity:

OK

Proceedtotest 7

-ECMpin821toground

Shortcircuit

Locateandrectifywiringfault,proceedtotest7

- ECM pin822toground

-ECMpin812to ground

-ECMpin 804toground

4

Checkcablecontinuity:

OK

Proceedtotest6

-ECMpin821toactuatorpinA

- ECMpin822toactuatorpinA

Opencircuit

Locateandrectify wiring fault,proceedtotest7

-ECMpin812toactuatorpin8

-ECMpin804toactuatorpin 8

5

Checkcableforshortcircuit:

• ECMpin821toECMpin822

• ECMpin812toECMpin804

OK

Proceedtotest6

Shortcircuit

Locateandrectifywiringfault,proceedtotest7

6

Checkactuatorresistance:

• SensorpinAtosensorpinA

• Sensorpin8tosensorpin8

4nto1on

Proceedtotest7

renewactuatorandproceedtotest7

7

Reconnectharness,clearfaultcode.

Rundiagnostictoolfunctiontesttovisuallyverifyoperationofactuator

OK

Actioncomplete,quittest

Faultstillpresent

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