Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc p0604 internal control module random access memory (ram) error

Subaru Crosstrek Service Manual / Engine (diagnostics)(h4do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p0604 internal control module random access memory (ram) error

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P0604 INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

Engine does not start

Engine stall

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION">, and Inspection Mode Inspection Mode > PROCEDURE">.

STEPCHECKYESNO

1.CHECK FOR ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Check the appropriate DTC using the “List of Diagnostic Trouble Code (DTC)”. List of Diagnostic Trouble Code (DTC)">

Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE:

In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

1. OUTLINE OF DIAGNOSIS

Detect the malfunction of microcomputer (RAM).

If it is possible to write data to the whole area of RAM in the initial routine, and is possible to read the same data, it is judged as OK, and if not, NG.

2. EXECUTION CONDITION

Secondary Parameters

Execution condition

None

Diagnosis with the initial routine.

3. GENERAL DRIVING CYCLE

Perform the diagnosis as soon as the ignition switch is turned to ON.

4. DIAGNOSTIC METHOD

Judge as NG when the following conditions are established.

Judgment Value

Malfunction Criteria

Threshold Value

Write the specified value into the RAM.

The written value cannot be read.

Time Needed for Diagnosis: Less than 0.512 seconds

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

Dtc p0512 starter (switch) request circuit
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0512 STARTER (SWITCH) REQUEST CIRCUITDTC detecting condition:Immediately at fault recognitionTrouble symptom ...

Dtc p0605 internal control module read only memory (rom) error
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0605 INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERRORNOTE:For the diagnostic procedure, refer to DTC P06 ...

Other materials:

Removal
SECURITY AND LOCKS > Starter Relay (Push Button Start)REMOVALCAUTION:Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. General Description > CAUTION">1. Disconnect the ground cable from bat ...

Child restraint systems
Infants and small children should always be placed in an infant or child restraint system in the rear seat while riding in the vehicle. You should use an infant or child restraint system that meets Federal Motor Vehicle Safety Standards or Canada Motor Vehicle Safety Standards, is compatib ...

Inspection
HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > CompressorINSPECTION1. MAGNET CLUTCH CLEARANCE INSPECTION1. Check the clearance of entire circumference around the drive plate and pulley.Specification:0.3 — 0.6 mm (0.0118 — 0.0236 in)2. Replace the compressor assembly if the inspection result is no ...

© 2016-2025 Copyright www.sucross.com