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A: Go to Next Step 5. CHECK TRANSPONDER KEY ECU (POWER SOURCE AND BODY GROUND) a. Turn the ignition switch ON. b. Measure the voltage according to the value(s) in the table below. Standard voltage TRANSPONDER KEY ECU (POWER SOURCE AND BODY GROUND) TESTER Fig. 31: Identifying J26 ECU Connector Terminals NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE TRANSPONDER KEY ECU (see REMOVAL ) DTC B279C THEFT DETERRENT SYSTEM PRESENCE DETECTION DESCRIPTION If an ECM that is incompatible with the engine immobilizer system is installed, the ECM outputs this DTC. DTC B279C THEFT DETERRENT SYSTEM PRESENCE DETECTION CONDITION CHART Tester Connection Condition Specified Condition J26-1 (+B) - J26-16 (GND) Always 11 to 14 V DTC No. DTC Detection Condition Trouble Area B279C ECM for vehicle without engine immobilizer system is installed on vehicle with ECM
2009 Toyota Tundra 2009 ACCESSORIES AND EQUIPMENT Engine Immobilizer - Tundra
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