Trouble Diagnoses

TROUBLE DIAGNOSIS

Symptom	Possible cause	Repair order
None of the power windows can be operated using any switch.	7.5A fuse, 30A fusible link (with KA24DE), or 40A fusible link (with VG33E and VG33ER) and M12 circuit breaker Power window relay ground circuit Power window relay Open/short in main power window and door lock/unlock switch circuit Open/short in power window relay control circuit Smart entrance control unit	Check 7.5A fuse (No. 5, located in fuse block [J/B]), 30A fusible link (with KA24DE) (letter f , located in fuse and fusible link box), 40A fusible link (with VG33E and VG33ER) (letter f , located in fuse and fusible link box) and M12 circuit breaker. Turn ignition switch ON and verify battery positive voltage is present at smart entrance control unit terminal 27, main power window and door lock/unlock switch terminal 2, front power window switch RH terminal 4, rear power window switch LH terminal 5 (Crew Cab), and rear power window switch RH terminal 5 (Crew Cab). Check power window relay ground circuit. Check power window relay. Check circuit between power window relay and main power window and door lock/unlock switch for open/short circuit. Check circuit between smart entrance control unit and power window relay for open/short circuit. Check smart entrance control unit.
Front driver side power window cannot be operated but other windows can be operated.	Front power window motor LH circuit Front power window motor LH Main power window and door lock/unlock switch	Check harness between main power window and door lock/unlock switch and front power window motor LH for open or short circuit. Check front power window motor LH. Check main power window and door lock/unlock switch.
Front passenger power window cannot be operated.	Front power window switch RH Front power window motor RH Main power window and door lock/unlock switch Power window circuit	Check front power window switch RH. Check front power window motor RH. Check main power window and door lock/unlock switch. Check the following. Check harnesses between main power window and door lock/unlock switch and front power window switch RH for open/short circuit. Check harnesses between front power window switch RH and front power window motor RH for open/short circuit.
Front passenger side power window cannot be operated using main power window and door lock/unlock switch but can be operated by front power window switch RH.	Main power window and door lock/unlock switch	Check main power window and door lock/unlock switch.
One or more rear power windows cannot be operated (Crew Cab).	Rear power window switches Rear power window motors Main power window and door lock/unlock switch Rear power window circuit	Check rear power window switches. Check rear power window motors. Check main power window and door lock/unlock switch. Check the following. Harnesses between rear power window switches terminal 5 and power window relay. Harnesses between main power window and door lock/unlock switch and rear power window switches for open/short circuit. Harnesses between rear power window switches and rear power window regulators for open/short circuit.
Power windows, except front driver side window, cannot be operated using main power window and door lock/unlock switch, but can be operated by power window switch.	Main power window and door lock/unlock switch	Check main power window and door lock/unlock switch.
Driver window AUTO function cannot be operated using main power window and door lock/unlock switch.	Main power window and door lock/unlock switch	Check main power window and door lock/unlock switch.
Retained power function does not operate.	Retained power signal circuit Driver or passenger side door switch circuit Smart entrance control unit	Check harness between power window relay terminal 2 and smart entrance control unit terminal 46 for open. Check the following Harness between smart entrance control unit and driver or passenger side door switch for short circuit Driver or passenger side door switch ground circuit Driver or passenger side door switch Check smart entrance control unit. Refer to SMART ENTRANCE CONTROL UNIT INSPECTION TABLE .