DTC P17AC: Transfer Shift Motor Limit Switch Circuit [09/2015 - ]: Procedure

1. Disconnect the A27 4 wheel drive control ECU connector.
2. Disconnect the C44 transfer shift actuator assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A27-8 (HL1) - C44-4 (HL1)	Always	Below 1 Ω
   A27-7 (HL2) - C44-6 (HL2)	Always	Below 1 Ω
   A27-6 (HL3) - C44-5 (HL3)	Always	Below 1 Ω
   C44-7 (GND) - Body ground	Always	Below 1 Ω
   A27-8 (HL1) or C44-4 (HL1) - Body ground	Always	10 kΩ or higher
   A27-7 (HL2) or C44-6 (HL2) - Body ground	Always	10 kΩ or higher
   A27-6 (HL3) or C44-5 (HL3) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the C44 transfer shift actuator assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   C44-4 (HL1) - Body ground	Engine switch on (IG)	10 to 14 V
   C44-6 (HL2) - Body ground	Engine switch on (IG)	10 to 14 V
   C44-5 (HL3) - Body ground	Engine switch on (IG)	10 to 14 V

   TEXT IN ILLUSTRATION
   
   

   * a	Front view of wire harness connector (to Transfer Shift Actuator Assembly)

Result: 

OK 

REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY 

Refer to DISASSEMBLY [09/2015 - ] )

Result: 

NG 

REPLACE 4 WHEEL DRIVE CONTROL ECU 

Refer to REMOVAL [09/2015 - ] )