Toyota Tundra (2015 year). Manual — part 1202
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002KQO0DVX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0604; Random Access Memory (RAM); 2015 MY
Tundra [08/2014 - ]
DTC
P0604
Random Access Memory (RAM)
DESCRIPTION
The ECM continuously monitors its internal memory status. This self-check ensures that the ECM is functioning
illuminate the MIL and store a DTC immediately.
DTC NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0604
ECM RAM errors
(1 trip detection logic)
ECM
MONITOR STRATEGY
Related DTCs
None
Required sensors/Components (Main)
ECM
Required sensors/Components (Related)
None
Duration
6 times
MIL operation
Immediate
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs not present
None
TYPICAL MALFUNCTION THRESHOLDS
Main CPU and sub CPU mirroring
Fail
CONFIRMATION DRIVING PATTERN
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
3.
Turn the ignition switch off and wait for at least 30 seconds.
4.
Turn the ignition switch to ON and turn the Techstream on.
5.
Wait 16 seconds or more.
6.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
7.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0604; Rand...
Read the pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
8.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
9.
Input the DTC: P0604.
10.
Check the DTC judgment result.
TESTER
DISPLAY
DESCRIPTION
NORMAL
DTC judgment completed
System normal
ABNORMAL
DTC judgment completed
System abnormal
INCOMPLETE
DTC judgment not completed
Perform driving pattern after confirming DTC enabling conditions
N/A
Unable to perform DTC judgment
HINT:
If the judgment result shows ABNORMAL, the system has a malfunction.
11.
If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and
check for permanent DTCs
.
HINT:
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
12.
INSPECTION PROCEDURE
NOTICE:
After turning ignition switch off, waiting time may be required before disconnecting the cable from the
negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative
(-) battery terminal notices before proceeding with work
.
HINT:
Read freeze frame data using a Techstream. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other
data from the time the malfunction occurred.
PROCEDURE
1.
CHECK FOR DTC
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0604; Rand...
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs
.
(e) Turn the ignition switch off and turn the Techstream off.
(f) Disconnect the Techstream.
(g) Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
(h) Connect the cable to the negative (-) battery terminal.
(i) Connect the Techstream to the DLC3.
(j) Turn the ignition switch to ON.
(k) Turn the Techstream on.
(l) Wait for 16 seconds or more.
(m) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(n) Read DTCs.
OK:
P0604 is not present.
NG
REPLACE ECM
OK
CHECK FOR INTERMITTENT PROBLEMS
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0604; Rand...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000032420F4X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0606; ECM / PCM Processor; 2015 MY Tundra
[08/2014 - ]
DTC
P0606
ECM / PCM Processor
DESCRIPTION
The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning
properly. If outputs from the 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
P0606
When either condition below is met:
ECM main CPU error
ECM sub CPU error
(1 trip detection logic)
ECM
MONITOR STRATEGY
Related DTC
P0606: ECM range check
Required sensors/Components (Main)
ECM
Required sensors/Components (Related)
-
Duration
Within 1 second
MIL Operation
Immediate
TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not present
None
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF
TYPICAL MALFUNCTION THRESHOLDS
Either condition A or B is met
-
A. DMA communication
No response
B. Watchdog from Monitoring Processor
Not toggle
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0606; ECM /...
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