P1603 ECM/PCM TOYOTA vitz - Yaris Toyota Cars & Trucks

This is a software issue with the engine control computer (PCM) go to the link for the information what you need to do. http://reclear.blogspot.com/2014/05/2000-volvo-v70-engine-code-p1603.html

all of the codes refer to the MAF/Vaf
HO sensors are are all connected in inlet manifold S / O2 sensors , EVAP system problems ( all in the air /mixture section of the control) it is unusual for all these similar codes to appear and the common cause is the ECM
try replacing the ECM with a known good unit and then see what codes appear
IF you come back with a comment I can give you all the code references and causes but as it is extensive , I will wait to see what an ECM change does

OBD-II code P1603 indicates an issue with TCU communication.
There are communications that exist between the engine control module, or ECM, and the transaxle control module, or TCM. This communication is done through a control area network, or CAN. With the communication of the CAN, an independent pin and wiring is needed to receive a signal that includes sensor information from the ECM. The more information there is to communicate, the more wiring that is needed. When it comes to CAN communication, all of the information communicated is done alone control modules like the ECM and TCM using CAN lines. When there is a problem with these lines, the ECM will detect the problem and store a P1603 trouble code; the storing of the trouble code is what causes the SES or check engine light to illuminate on the dash.
Possible causes of trouble code P1603 include:

• Faulty transaxle control module (TCM)
• Faulty engine control module (ECM)
• Harness running from the TCM to the ECM has a short
• There is a poor electrical connection between the TCM and ECM

Diagnosing the exact cause of the problem should always begin with a visual inspection that could reveal bad wiring, loose connections, or damaged parts. From there, it is a matter of running down the list to determine what needs to be replaced. In general, a bad ECM will cause a loss of power, poor fuel economy, and stalling engine. While a bad TCM will have more prevalent transaxle issues like erratic shifting
P1605 and P1605
These codes are indicating a starting problem and rough idling. Code p1604 is a very vague code and diagnosing it without having a symptom is very complicated. And code p1605 is rough idling which means that the computer have noticed a rough idle situation usually this code is accompanied by other codes or if it's alone then I would suspect a fuel pressure issue. These two codes involve diagnosis and we'll need to dig into this problem deeper to find out what's causing them, Unless you are an experienced technician who need assistance then I will suggest that you take your vehicle to your local toyota dealership and they should be able to find the problem.
P1P

Here's a link to the code P1603 Vincent. P1603 Code General

P0171 System too Lean (Bank 1)
P0174 System too Lean (Bank 2)
P0154 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P0134 02 Sensor Circuit No Activity Detected (Bank I Sensor 1)

speedo can be a cable to the gearbox or the dash itself?
a/c may need a re gas

Have to Google all Vehicle Codes
OBD P1603

Diagnostic Trouble Code Table can help you to check the trouble code when you diagnose your car with OBDII diagnostic tools.

Do a Google search ( want to have a manual for toyota vitz year 2007, of 999cc ) and see what comes up

I need user manual of Toyota vitz 2000