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Home >> Toyota >> 2002 >> Corolla CE, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Automatic Transmission Diagnosis - U340E & U341E) >> Diagnostic Tests >> DTC P0710: ATF Temperature Sensor >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Toyota ECHO, 2002 Toyota Celica, 2001 Toyota ECHO, and 2001 Toyota Celica. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support vehicle. Disconnect transaxle solenoid connector, located above PNP switch on side of transaxle. Remove transaxle oil pan. Disconnect all solenoid connectors at solenoids. See Figure. Remove transaxle wiring harness from transaxle. Submerge ATF temperature sensor in water.
  2. Heat water while measuring sensor resistance between transaxle solenoid connector terminals No. 1 and 6. At 77°F (25°C), resistance should be 3.5 k/ohms. At 231°F (110°C), resistance should be 247 ohms.
  3. If resistance is not as specified, replace ATF temperature sensor. Sensor is part of transaxle internal wiring harness. If resistance is as specified, check and repair wiring harness and connector between ATF temperature sensor and ECM. If wiring harness and connector are okay, replace ECM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article in ENGINE PERFORMANCE.
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