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AT OIL TEMP Warning Light Display: Inspection: Trouble Symptom

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

When the ignition switch is turned to ON, the AT OIL TEMP light does not illuminate.

Step Check Yes No
1 CHECK AT OIL TEMP LIGHT. 
Turn the ignition switch to ON.
Does the AT OIL TEMP light illuminate? Go to step . Perform the self-diagnosis of combination meter. < Refer to INSPECTION , Combination Meter System. >
2 CHECK AT OIL TEMP LIGHT. 
Turn the ignition switch to ON and wait for at least 2 seconds.
Does the AT OIL TEMP light illuminate? Go to step . Go to step .
3 CHECK AT OIL TEMP LIGHT. 
Start the engine.
Does the AT OIL TEMP light go off? Normal. Go back to Basic Diagnostic Procedure. < Refer to BASIC DIAGNOSTIC PROCEDURE . > Go to step .
4 CHECK SUBARU SELECT MONITOR COMMUNICATION. 
Connect the Subaru Select Monitor to data link connector.
Is the communication between Subaru Select Monitor and TCM normal? Go to step . Check the power supply ground circuit of TCM and Subaru Select Monitor communication. < Refer to DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION . >
5 CHECK TCM. 
  1. Display the current data of TCM using Subaru Select Monitor. < Refer to OPERATION , Subaru Select Monitor. >
  2. Read the data of «Diagnosis Lamp» using Subaru Select Monitor.
Is "ON" displayed? Go to step . Replace the TCM. < Refer to TRANSMISSION CONTROL MODULE (TCM) . >
6 CHECK BODY INTEGRATED UNIT. 
  1. Connect the Subaru Select Monitor, and display the current data of the body integrated unit. < Refer to OPERATION , Subaru Select Monitor. >
  2. Read the data of «ATF Temperature Lamp» using the Subaru Select Monitor.
Is "ON" displayed? Replace the combination meter assembly. < Refer to COMBINATION METER . > Check DTC of body integrated unit. < Refer to OPERATION , Subaru Select Monitor. >
7 CHECK TCM. 
NOTE: If the ATF temperature is 138°C or more, cool down ATF to 137°C or less.

  1. Display the current data of TCM using Subaru Select Monitor.
  2. Read the data of «Diagnosis Lamp» using Subaru Select Monitor.
Is "ON" displayed? Replace the TCM. < Refer to TRANSMISSION CONTROL MODULE (TCM) . > Go to step .
8 CHECK BODY INTEGRATED UNIT. 
  1. Connect the Subaru Select Monitor, and display the current data of the body integrated unit.
  2. Read the data of «ATF Temperature Lamp» using the Subaru Select Monitor.
Is "ON" displayed? Check DTC of body integrated unit. Perform the diagnosis according to DTC. < Refer to OPERATION , Subaru Select Monitor. > Perform the self-diagnosis of combination meter. < Refer to INSPECTION , Combination Meter System. >