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">.
STEP | CHECK | YES | NO |
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.
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.
Adjustment
SECURITY AND LOCKS > Front Hood Lock AssemblyADJUSTMENT1. Loosen the bolt, and adjust the lock assembly - front hood while moving it up and down.2. After adjustment, tighten the bolts securely.Tightening torque:Refer to “COMPONENT” of “General Description”. General Descri ...
Occupant detection system
The occupant detection system sensor is
installed under the seat upholstery and
monitors the physique and posture of the
front passenger. Using this information,
the occupant detection system determines
whether the front passenger's SRS frontal
airbag should be deployed or not.
If the front ...
Inspection
EyeSight (DIAGNOSTICS) > General DescriptionINSPECTION1. BATTERYCheck the battery. Battery">2. WINDSHIELD GLASS AND DASHBOARDRemove the windshield glass and dashboard in front of the stereo camera.Standard:There must be no oil film, dirt, scratch or fogging that obstructs the forward vis ...