OPERATION CHECK 1. CHECK WINDOW DEFOGGER OPERATION (a) Turn the ignition switch ON. (b) Check that pressing the air conditioning control assembly (rear window defogger switch) illuminates the indicator and warms the rear window surface. (c) Check that after approximately 15 minutes, the indicator light turns off and the window defogger deactivates. |
Toyota Tundra Service Manual > Sfi System: Thermostat (P0128)
DESCRIPTION This DTC is stored when the Engine Coolant Temperature (ECT) does not reach 75°C (167°F) despite sufficient engine warm-up time having elapsed. DTC No. DTC Detection Condition Trouble Area P0128 Conditions (a), (b) and (c) met for 5 seconds (2 trip detection logic): (a) Cold start (b) ...
