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 NO. 1 STEREO JACK ADAPTER ASSEMBLY
(a) Engage the 2 claws to install the No. 1 stereo jack adapter assembly.
2. INSTALL INSTRUMENT PANEL LOWER CENTER FINISH PANEL
(See page )
3. INSTALL NO. 2 INSTRUMENT PANEL GARNISH SUB-ASSEMBLY
(See page )
4. INSTALL F ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE TELEPHONE MICROPHONE ASSEMBLY
Click here
2. REMOVE MICROPHONE CASE
HINT:
Use the same procedure for Double Cab.
Click here
3. REMOVE NO. 1 ROOF WIRE (w/ Vanity Light)
(a) w/ EC Mirror:
(1) Remove the No. 1 roof wire.
...
Occupant Classification System Malfunction (B1650/32)
DESCRIPTION
The occupant classification system circuit consists of the airbag sensor assembly
and the occupant classification system.
When the airbag sensor assembly receives signals from the occupant detection
ECU, it determines whether or not the instrument panel passenger without door airba ...