DESCRIPTION
When the transfer switches modes, the TL1, TL2 and TL3 terminals of the limit switch are in one of the ON/OFF combinations listed in the table below.
Terminal |
When 2WD |
Switching between 2WD and H4 |
When H4 |
Switching between H4 and L4 |
When L4 |
---|---|---|---|---|---|
TL1 |
ON (GND) |
ON (GND) |
OFF (OPEN) |
OFF (OPEN) |
OFF (OPEN) |
TL2 |
OFF (OPEN) |
OFF (OPEN) |
OFF (OPEN) |
ON (GND) |
ON (GND) |
TL3 |
OFF (OPEN) |
ON (GND) |
ON (GND) |
ON (GND) |
OFF (OPEN) |
A malfunction is detected depending on the combination of the 3 circuits that make up the limit switch of the transfer shift actuator assembly.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
P17AC |
Transfer Shift Motor Limit Switch Circuit |
|
|
WIRING DIAGRAM
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY) |
(a) Disconnect the F13 4 wheel drive control ECU connector.
(b) Disconnect the T4 transfer shift actuator assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F13-11 (TL1) - T4-3 (TL1) |
Always |
Below 1 Ω |
F13-10 (TL2) - T4-4 (TL2) |
Always |
Below 1 Ω |
F13-9 (TL3) - T4-5 (TL3) |
Always |
Below 1 Ω |
T4-6 (GND1) - Body ground |
Always |
Below 1 Ω |
F13-11 (TL1) or T4-3 (TL1) - Body ground |
Always |
10 kΩ or higher |
F13-10 (TL2) or T4-4 (TL2) - Body ground |
Always |
10 kΩ or higher |
F13-9 (TL3) or T4-5 (TL3) - Body ground |
Always |
10 kΩ or higher |
F13-11 (TL1) - T4-4 (TL2) and T4-5 (TL3) |
Always |
10 kΩ or higher |
F13-10 (TL2) - T4-3 (TL1) and T4-5 (TL3) |
Always |
10 kΩ or higher |
F13-9 (TL3) - T4-3 (TL1) and T4-4 (TL2) |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK 4 WHEEL DRIVE CONTROL ECU (ECU OUTPUT VOLTAGE) |
(a) Disconnect the transfer shift actuator assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
T4-3 (TL1) - Body ground |
Ignition switch ON |
10 to 14 V |
T4-4 (TL2) - Body ground |
Ignition switch ON |
10 to 14 V |
T4-5 (TL3) - Body ground |
Ignition switch ON |
10 to 14 V |
*a |
Front view of wire harness connector (to Transfer Shift Actuator Assembly) |
OK | ![]() |
REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY |
NG | ![]() |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
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