DESCRIPTION
When the A.D.D. actuator switches between 2WD and 4WD, the DL1 and DL2 terminals of the limit switch and ADD terminal of the A.D.D. position switch change to one of the following ON/OFF combinations listed in the table below.
Terminal |
In 2WD |
Switching between 2WD and 4WD |
In 4WD |
|
---|---|---|---|---|
DL1 |
ON (GND) |
ON (GND) |
OFF (OPEN) |
|
DL2 |
OFF (OPEN) |
ON (GND) |
ON (GND) |
|
ADD |
OFF (OPEN) |
OFF (OPEN) |
ON (GND) |
ON (GND) |
A malfunction is detected depending on the combination of the 3 circuits that make up the limit switch and A.D.D. position switch.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
P17A4 |
Automatic Disconnecting Differential Motor Limit Switch Circuit |
|
|
WIRING DIAGRAM
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY) |
(a) Disconnect the F13 4 wheel drive control ECU connector.
(b) Disconnect the A3 A.D.D. actuator (differential vacuum actuator assembly) connector.
(c) for Hydraulic Brake Booster:
Disconnect the S1 skid control ECU (Master Cylinder Solenoid) connector.
for Vacuum Brake Booster:
Disconnect the S1 skid control ECU (brake actuator assembly) connector.
(d) for 2GR-FKS:
Disconnect the E13 ECM connector.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F13-8 (DL1) - A3-6 (DL1) |
Always |
Below 1 Ω |
F13-7 (DL2) - A3-5 (DL2) |
Always |
Below 1 Ω |
F13-2 (ADD) - A3-3 (ADD) |
Always |
Below 1 Ω |
A3-4 (GND) - Body ground |
Always |
Below 1 Ω |
F13-8 (DL1) or A3-6 (DL1) - Body ground |
Always |
10 kΩ or higher |
F13-7 (DL2) or A3-5 (DL2) - Body ground |
Always |
10 kΩ or higher |
F13-2 (ADD) or A3-3 (ADD) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
INSPECT DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY (LIMIT SWITCH AND A.D.D. POSITION SWITCH) |
(a) Disconnect the A.D.D. actuator (differential vacuum actuator assembly) connector. |
|
(b) for Hydraulic Brake Booster:
Disconnect the S1 skid control ECU (Master Cylinder Solenoid) connector.
for Vacuum Brake Booster:
Disconnect the S1 skid control ECU (brake actuator assembly) connector.
(c) for 2GR-FKS:
Disconnect the E13 ECM connector.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
A3-6 (DL1) - Body ground |
Ignition switch ON |
10 to 14 V |
A3-5 (DL2) - Body ground |
Ignition switch ON |
10 to 14 V |
A3-3 (ADD) - Body ground |
Ignition switch ON |
10 to 14 V |
*a |
Front view of wire harness connector (to A.D.D. Actuator (Differential Vacuum Actuator Assembly)) |
OK | ![]() |
REPLACE DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY |
NG | ![]() |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
Installation
INSTALLATION
PROCEDURE
1. INSTALL OCCUPANT DETECTION ECU
(a) Check that the ignition switch is OFF.
(b) Check that the cable is disconnected from the battery negative (-) terminal
is disconnected.
CAUTION:
After removing the cable from the terminal, wait for at least 90 seconds before
star ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT AIR CONDITIONER PRESSURE SENSOR (for Automatic Air Conditioning System)
(a) Check the wire harness.
(1) Disconnect the A34 air conditioner pressure sensor connector.
(2) Disconnect the A35 and A36 air conditioning amplifier assembly connector.
...
Key Cannot be Registered
DESCRIPTION
A maximum of 5 master key ID codes can be registered.
WIRING DIAGRAM
Refer to "B2780" (See page )
CAUTION / NOTICE / HINT
NOTICE:
If the transponder key ECU assembly is replaced, refer to Registration (See page
).
PROCEDURE
1.
CHECK REGISTRATIO ...