Subaru IMPREZA 04 diagnose by SSM iii/FreeSSM

Here is the guide to troubleshoot Subaru IMPREZA 2004 with SSM III or FreeSSM software.

 

Model: Subaru IMPREZA 2004

subaru-impreza-2014

Tools to use:

Subaru FreeSSM V1.2.5 diagnostic cable

VXDIAG Subaru SSM III multi diagnostic tool

 

1 CHECK ENGINE START FAILURE.

1)- Ask the customer when and how the trouble occurred using the check list for interview.

subaru-ssm-iii-2004-IMPREZA-1

subaru-ssm-iii-2004-IMPREZA-2

2)- Start the engine.

 

Does the engine start?

YES–> Go to step

NO–> Diagnostics for engine start failure:

i- Check for fuel amount.

ii- Inspection of starter motor circuit.

iii- Inspection of ECM power supply and ground line.

iv- Inspection of ignition control system.

v- Inspection of fuel pump circuit.

vi- Inspection of fuel injector circuit.

 

 

2 CHECK ILLUMINATION OF MALFUNCTION INDICATOR LIGHT.

Does malfunction indicator light illuminate?

YES–> Go to step 3

NO–> General diagnostics table

 

3 CHECK INDICATION OF DTC ON DISPLAY.

1)- Turn the ignition switch to OFF.

2)- Connect the Subaru Select Monitor or the OBD-II general scan tool to data link connector.

3)- Turn the ignition switch to ON and the Subaru Select Monitor III or OBD-II

scan tool switch to ON.

4)- Read the DTC on the Subaru SSM III or OBD-II scan tool.

 

Does the Subaru Select Monitor or FreeSSM software indicate DTC?

YES–> Record the DTC. Repair the trouble cause. Go to step 4.

NO–> Repair the related parts.

NOTE:

If DTC is not shown on display although the malfunction indicator light illuminates, perform diagnostics of malfunction indicator light circuit or combination meter:

i- Activation of malfunction indicator light.

ii- Malfunction indicator light does not come on.

iii- Malfunction indicator light does not go off.

iv- Malfunction indicator light does not blink at a cycle of 3 Hz.

v- Malfunction indicator light remains blinking at a cycle of 3 Hz.

 

4 PERFORM THE DIAGNOSIS.

1)- Perform the clear memory mode.

2)- Perform the inspection mode.

 

Does the Subaru Select Monitor or FreeSSM OBD-II general scan tool indicate DTC?

YES–> Diagnostics Procedure with Diagnostic Trouble Code (DTC):

DTC P0030 HO2S HEATER CONTROL CIRCUIT (BANK 1 SENSOR 1)

  • DTC DETECTING CONDITION:
  • Two consecutive driving cycles with fault

subaru-ssm-iii-2004-IMPREZA-3

NO–> Complete the diagnosis.

 

Attachment:

Subaru IMPREZA diagnostic trouble codes (DTC) and expalnation:

2004-IMPREZA-DTC-1

2004-IMPREZA-DTC-2

2004-IMPREZA-DTC-3

2004-IMPREZA-DTC-4

2004-IMPREZA-DTC-5

2004-IMPREZA-DTC-6

2004-IMPREZA-DTC-7

2004-IMPREZA-DTC-8

2004-IMPREZA-DTC-9

2004-IMPREZA-DTC-10

2004-IMPREZA-DTC-11

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