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Hii, Camery 2013, I m mechanic, Yes

Customer Question
Hii JA: What is the model/year...
Hii
JA: What is the model/year of your Toyota?
Customer: Camery 2013
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: I m mechanic
JA: Anything else you want the mechanic to know before I connect you?
Customer: Yes
Submitted: 3 months ago.Category: Australia Car
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Answered in 3 minutes by:
8/14/2017
AU Auto Mechanic: Edward, Service Technician replied 3 months ago
Edward
Edward, Service Technician
Category: Australia Car
Satisfied Customers: 3,181
Experience: 20 + years experience on various makes and models.
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Hello, and thanks for your question. My name is ***** ***** I will do all I can to help.

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AU Auto Mechanic: Edward, Service Technician replied 3 months ago

What problems are you having with your camry?

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Customer reply replied 3 months ago
Hello
AU Auto Mechanic: Edward, Service Technician replied 3 months ago

Hello, you can go ahead with your question at this time.

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Customer reply replied 3 months ago
I change transmission last week now car is not running good it giving me two codes p1603 p1605
AU Auto Mechanic: Edward, Service Technician replied 3 months ago

Alright, did you look at the wiring harness and double check that you didn't pinch it anywhere when installing the transmission?

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Customer reply replied 3 months ago
I have check
AU Auto Mechanic: Edward, Service Technician replied 3 months ago

Alright, the code description is follows.

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
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AU Auto Mechanic: Edward, Service Technician replied 3 months ago

Let me know if anything looks damaged or pinched there.

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Customer reply replied 3 months ago
No I have check everything
AU Auto Mechanic: Edward, Service Technician replied 3 months ago

Both of those codes are communication faults. Your positive you got every connector snapped back together good and tight? did you have this transmission built or overhauled? or put another unit in it?

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Customer reply replied 3 months ago
I put another used one
AU Auto Mechanic: Edward, Service Technician replied 3 months ago

Alright, what was the first transmission doing? was it slipping or setting codes? How many miles or kilometers are on it roughly?

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Customer reply replied 3 months ago
Yeh it was slipping 3rd 4rth
AU Auto Mechanic: Edward, Service Technician replied 3 months ago

Alright, I believe your CAN network is disrupted or down somehow and information is not being shared between the various modules. Let me opt out as there is really no way I can pinpoint where this disruption is occurring from here. Perhaps another expert has seen this issue before, so let me see if some one else can help. Thank you.

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Curtis
Curtis
Curtis, Australia Car Mechanic
Category: Australia Car
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