AT OIL TEMP Warning Light Display: Inspection: Wiring Diagram

Fig 1: AT Oil Temp Light - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

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 2  .	Perform self diagnosis of the combination meter. Ref. to INSPECTION , Combination Meter System.
2 CHECK AT OIL TEMP LIGHT.  Start the engine.	Does AT OIL TEMP light go off after two seconds from engine start?	Current condition is normal. Go back to "Basic Diagnostic Procedure". Ref. to BASIC DIAGNOSTIC PROCEDURE .	Go to step 3  .
3 CHECK DTC.  Read the DTC relating the TCM using the Subaru Select Monitor.	Is DTC displayed?	Perform the diagnosis according to DTC.	Go to step 4  .
4 CHECK TCM.  Read the data of "ATF Temperature Lamp" using the Subaru Select Monitor.	Is "ON" displayed?	Go to step 5  .	Perform self diagnosis of the combination meter. Ref. to INSPECTION , Combination Meter System.
5 CHECK TCM.  Read the data of ATF temperature using Subaru Select Monitor.	Is display 125 °C or more?	Go to step 6  .	Check the TCM.
6 CHECK ATF TEMPERATURE.  Check the real fluid temperature from the transmission case surface temperature.	Does it clearly differ from the "ATF Temp." displayed on Subaru Select Monitor?	Perform the diagnosis according to DTC P0712 procedure. If there is no problems, perform the diagnosis according to DTC P0713 procedure.	When ATF temperature can be judged as actually high, perform the diagnosis again after the ATF temperature lowers.