DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P0604 | ECM [Internal control module random access memory (RAM) error] | Malfunction in the internal RAM of ECM. |
POSSIBLE CAUSE
ECM
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is 11 V or more with ignition switch ON.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
CAUTION: Never start engine during this procedure.
Is 1st trip DTC detected? YES >> Proceed to EC-372, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.PERFORM DTC CONFIRMATION PROCEDURE
Is the 1st trip DTC P0604 displayed again? YES >> Replace ECM. Refer to EC-499, "Removal and Installation".
NO >> INSPECTION END
Preparation
Special Service Tools
The actual shape of the tools may differ from those illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
(J-44321)
Fuel pressure gauge
kit
Checks fuel pressure
KV10120000
Fuel tube adapter
...
C1716, C1717, C1718, C1719 transmitter (pressure data)
DTC Logic
NOTE:
The Signal Tech II Tool [- (J-50190)] can be used to perform the following
functions. Refer to the Signal Tech II
User Guide for additional information.
Activate and display TPMS sensor IDs
Display tire pressure reported by the TPMS sensor
Read TPMS DTC ...
P0131 A/F sensor 1
DTC Description
DTC DETECTION LOGIC
To judge the malfunction, the diagnosis checks that the A/F signal computed
by ECM from the A/F sensor 1
signal is not inordinately low.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0131
A/F SE ...