Toyota Sienna Service Manual: ECM / PCM Processor
DTC P0606 ECM / PCM Processor
DESCRIPTION
The ECM continuously monitors its internal processors (CPUs), A/F sensor
transistors and heated oxygen
sensor (HO2S) transistors. This self-check ensures that the ECM is functioning
properly. These are
diagnosed by internal "mirroring" of the main and sub CPUs to detect the
processors error. If outputs from
the processors deviate from the standards, the ECM will illuminate the MIL and
set a DTC immediately.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

INSPECTION PROCEDURE
1 INSPECT FOR EXHAUST GAS LEAK
- Allow the engine to idle.
- Check for exhaust gas leak around the heated oxygen
sensor.
OK:
No leak from the heated oxygen sensor.
2 CHECK HEATED OXYGEN SENSOR

- Connect the intelligent tester to the DLC3.
- Start the engine and turn the tester on.
- Warm up the engine at an engine speed of 2500rpm for
approximately 90 seconds.
- Enter the following menus: DIAGNOSIS / ENHANCED II
/ ACTIVE TEST / A/F CONTROL.
- Perform the A/F CONTROL operation with the engine in
an idling condition (press the RIGHT or LEFT button to
change the fuel injection volume).
- Monitor the voltage outputs of the HO2 sensors (O2S
B1S2) displayed on the tester.
HINT:
- The A/F CONTROL operation lowers the fuel injection
volume by 12.5% or increases the injection volume by
25%.
- Each sensor reacts in accordance with increases in
the fuel injection volume.
Standard voltage

Result

3 CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0606)

- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Turn the tester on.
- Clear the DTC.
- Turn the ignition switch off.
- Disconnect the battery negative terminal and wait for 1
minute.
- Connect the battery negative terminal.
- Start the engine.
- Perform the drive pattern.
- Warm up the engine.
- Accelerate the vehicle to 50 mph (80 km/h) and stop
the vehicle.
- Drive the vehicle at 35 to 50 mph (60 to 80 km/h) for
5 minutes or more.
- Enter the following menus: DIAGNOSIS / ENHANCED II
/ DTC INFO / CURRENT CODES.
- Read the DTCs.
Result

REPLACE ECM
DTC P0604 Internal Control Module Random Access Memory
(RAM) Error
DESCRIPTION
The ECM continuously monitors its own internal memory status, internal
circuits, and output signals
transmitted to ...
DTC P0607 Control Module Performance
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 di ...
Other materials:
Disposal
1. DISPOSE OF FRONT SEAT OUTER BELT ASSEMBLY (WHEN INSTALLED IN VEHICLE)
NOTICE:
Never dispose of a front seat outer belt assembly
with an deactivated pretensioner.
The seat belt pretensioner produces an exploding
sound when it activates, so perform the operation
outdoors wh ...
Installation
1. INSTALL SLIDE DOOR ROLLER ASSEMBLY UPPER
Apply MP grease to the rotating areas of the roller.
Install the roller with the 2 bolts.
Torque: 13 N*m (130 kgf*cm, 10 ft.*lbf)
2. INSTALL SLIDE DOOR HINGE ASSEMBLY CENTER LH
Apply MP grease to the rotating areas of the hinge.
In ...
U151f automatic transaxle
Service data
TORQUE SPECIFICATIONS
...