Subaru Crosstrek Service Manual: Dtc p0604 internal control module random access memory (ram) error
CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0604 INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR
DTC DETECTING CONDITION:
Detected when two consecutive driving cycles with fault occur.
TROUBLE SYMPTOM:
TCM RAM malfunction
| STEP | CHECK | YES | NO |
1.CHECK DTC.
1) Perform the Clear Memory Mode using the Subaru Select Monitor. Clear Memory Mode">
2) Read the DTC.
Is DTC P0604 displayed?
Replace the TCM. Transmission Control Module (TCM)">
Current condition is normal. Check for interference from noise, etc.
1. OUTLINE OF DIAGNOSIS
• Detect the malfunction in RAM area of the TCM.
• Judge as NG if an attempt to write to RAM area failed.
2. EXECUTION CONDITION
Secondary Parameters | Execution condition |
12 V battery system voltage | ≥ 10 V |
3. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Malfunction Criteria | Threshold Value |
Writing-check (RAM) NOTE: |
This check is carried out about the RAM only used for CAN communication.
Error
Time Needed for Diagnosis: Immediately
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
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Dtc p062f internal control module eeprom error
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Other materials:
Check engine warning light/Malfunction indicator light
CAUTION
If the CHECK ENGINE light illuminates
while you are driving, have
your vehicle checked/repaired by
your SUBARU dealer as soon as
possible. Continued vehicle operation
without having the emission
control system checked and repaired
as necessary could cause
serious damage, which may n ...
Driving on grades
Before going down a steep hill, slow
down and shift into lower gear (if necessary,
use 1st gear) in order to utilize the
engine braking effect and prevent overheating
of your vehicle's brakes. Do not
make sudden downshifts.
When driving uphill in hot weather, the
air conditioner may ...
Assembly
COOLING(H4DO) > Radiator Sub Fan and Fan MotorASSEMBLYAssemble in the reverse order of disassembly.Tightening torque:4.41 N·m (0.45 kgf-m, 3.25 ft-lb)Tightening torque:3.4 N·m (0.3 kgf-m, 2.5 ft-lb) ...
