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Marty
Marty, ASE Certified Technician
Category: Car
Satisfied Customers: 54028
Experience:  ASE & Bosch Certified Master Tech. Over 30 years experience.
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Tempresure and

Customer Question

Tempresure and Tachometer not functioning
Submitted: 3 years ago.
Category: Car
Expert:  Tim's Auto Repair replied 3 years ago.

Tim's Auto Repair :



Hi,My name is Tim,


I will do my best to assist you

Tim's Auto Repair :

what is the year,make and model of your car?

Tim's Auto Repair :

tell me how and when this problem began

Tim's Auto Repair :

tell me all you can

JACUSTOMER-rngc5rfk- :

2008, Nissan 350z

Tim's Auto Repair :

ok

Tim's Auto Repair :

please stand by

JACUSTOMER-rngc5rfk- :

This car was flooded a few months back

Tim's Auto Repair :

i will get someone to help you

JACUSTOMER-rngc5rfk- :

so i changed the instrument cluster plus the Amplified meter

JACUSTOMER-rngc5rfk- :

ok

Tim's Auto Repair :

did this problem begin after it was flooded?

JACUSTOMER-rngc5rfk- :

yes

Tim's Auto Repair :

have you had any other problems?

Tim's Auto Repair :

that you have noticed?

JACUSTOMER-rngc5rfk- :

yeap, had some other electrical and mechanical issues but all fixed now

Tim's Auto Repair :

explain the electrical

JACUSTOMER-rngc5rfk- :

Tachometer and tempresure guage is still not working

Tim's Auto Repair :

what other electrical wasnt working?

JACUSTOMER-rngc5rfk- :

Like the ECU, BCM, instrument cluster, Amplified meter, AC, these are the major ones

Tim's Auto Repair :

ok

JACUSTOMER-rngc5rfk- :

All fixed now except some guages on the instrument cluster

JACUSTOMER-rngc5rfk- :

Tempreture and tachometer

Tim's Auto Repair :

stand by,,i will opt out,,maybe one of the other guys has seen this,,someone will be right with you

JACUSTOMER-rngc5rfk- :

ok

Expert:  Marty replied 3 years ago.
Hi, my name isXXXXX tach and temp gauge receive inputs from the unified meter and ac amplifier over the CAN communication line. The amplifier receives the data from the engine control module over the CAN communication line. It sounds like you have a fault with the CAN communication between the engine control module and the amplifier. You will need to check the CAN lines from the ECM to the amplifier for a short or open circuit. On a flood car you need to carefully inspect the harness connectors for corrosion. Corroded connectors can corrupt the CAN communication between the modules. Your blue and pink wires at the module are your CAN communication lines. Let me know if you have any questions.