JCB Tier 4 Intake Manifold 1 Air Temperature Sensor Voltage Error Solution

Here is the instruction show you guide on how to solve JCB Tier 4 engine K4735 SPN 1132, FMI 3, Intake manifold 1 air temperature sensor voltage above normal or open circuit.

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Description

The measured intake manifold 1 temperature signal is above the normal operating range.

 

Possible causes are:

The intake manifold temperature sensor wiring is defective.

The intake manifold temperature sensor is defective.

 

Reaction in EEM

The FC is stored and the warning lamp is activated. Engine power will be reduced (Degradation Level 1). The CAN message indicates active fault.

 

Solution

First save the error log and then erase it. Restart the ECU after erasing the error log. If the fault occurs again during the next driving cycle, check the following paths:

Check the intake manifold temperature sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).

Check the operation with another intake manifold temperature sensor to see if the temperature sensor is defective.

 

More repair case for JCB,please refer to:JCB Trouble Repair