Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
2Tr-Fe Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
DTC P0604 Random Access Memory (RAM) |
DESCRIPTION
The ECM continuously monitors its internal memory status. This self-check ensures that the ECM is functioning properly. The ECM memory status is diagnosed by internal "mirroring" of the main CPU and sub CPU to detect Random Access Memory (RAM) errors. If outputs from these CPUs are different and deviate from the standard, the ECM will illuminate the MIL and store a DTC immediately.| DTC No. | DTC Detection Condition | Trouble Area |
| P0604 | ECM RAM errors (Main CPU and sub CPU mirroring failure) (1 trip detection logic). | ECM |
MONITOR STRATEGY
| Required sensors/Components | ECM |
| Frequency of operation | Continuous |
CONFIRMATION DRIVING PATTERN
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
- Connect the cable to the negative (-) battery terminal.
- Turn the ignition switch to ON and wait for 16 seconds or more.
INSPECTION PROCEDURE
| 1.CHECK FOR DTC |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the intelligent tester on.
Clear the DTCs (HILUX_TGN26 RM000000PDK0XTX.html).
Turn the intelligent tester off.
Turn the ignition switch off.
Disconnect the intelligent tester.
Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
Connect the cable to the negative (-) battery terminal.
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the intelligent tester on.
Wait 16 seconds or more.
Enter the following menus: Powertrain / Engine and ECT / DTC.
Check for DTCs.
- OK:
- P0604 is not output.
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| OK | ||
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