AT OIL TEMP Warning Light Display: Inspection: Wiring Diagram

WARNING: This page is about a different variant/trim than selected.

Fig 1: AT Oil Temp Light Circuit Diagram (Open Or Shorted)

Courtesy of SUBARU OF AMERICA, INC.

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.
2 CHECK AT OIL TEMP LIGHT. After the ignition switch is ON, wait for 2 seconds or more.	Does the AT OIL TEMP light illuminate?	Go to step 3.	Go to step 4 .
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 6 .
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 5.	Check the power supply ground circuit of TCM and Subaru Select Monitor communication. Refer to , DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION .
5 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 6 .
6 CHECK TCM. Read the data of "ATF Temperature Lamp" using the Subaru Select Monitor.	Is "ON" displayed?	Go to step 7.	Perform self diagnosis of the combination meter.
7 CHECK TCM. Read the data of ATF temperature using Subaru Select Monitor.	Is the display 130°C or more?	Go to step 8.	Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) 5AT-57, Transmission Control Module (TCM).
8 CHECK ATF TEMPERATURE. Check the real fluid temperature from the transmission case surface temperature.	Is the temperature lower than "ATF temperature" displayed on Subaru Select Monitor?	Perform the diagnosis according to DTC P0713.	When ATF temperature can be judged as actually high, perform the diagnosis again after the ATF temperature lowers.