DESCRIPTION
This DTC is output when a malfunction is detected in the 4 wheel drive control ECU internal circuit.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
P163B |
4WD ECU Malfunction |
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|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
4WD specification:
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL LOCK COIL) |
(a) Turn the ignition switch off.
(b) Disconnect the F12 4 wheel drive control ECU connector.
(c) Disconnect the D28 differential lock coil connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F12-1 (SL+) - D28-2 (SL+) |
Always |
Below 1 Ω |
F12-5 (SL-) - D28-1 (SL-) |
Always |
Below 1 Ω |
F12-1 (SL+) or D28-2 (SL+) - Body ground |
Always |
10 kΩ or higher |
F12-5 (SL-) or D28-1 (SL-) - Body ground |
Always |
10 kΩ or higher |
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F12-1 (SL+) or D28-2 (SL+) - Body ground |
Ignition switch ON |
Below 1 V |
F12-5 (SL-) or D28-1 (SL-) - Body ground |
Ignition switch ON |
Below 1 V |
NG | ![]() |
REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
2. |
INSPECT DIFFERENTIAL LOCK COIL |
(a) Turn the ignition switch off.
(b) Disconnect the D28 differential lock coil connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
1 (SL-) or 2 (SL+) - Body ground |
Ignition switch ON |
Below 1 V |
OK | ![]() |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
NG | ![]() |
REPLACE DIFFERENTIAL LOCK COIL |
Installation
INSTALLATION
PROCEDURE
1. INSTALL WINDSHIELD WIPER SWITCH ASSEMBLY
(a) Engage the claw to install the windshield wiper switch assembly.
(b) Connect the 2 connectors.
2. INSTALL UPPER STEERING COLUMN COVER
3. INSTALL LOWER STEERING COLUMN COVER
...
Brake Switch "A" Circuit (P0571)
DESCRIPTION
Detection condition 1:
When the brake pedal is depressed, the stop light switch assembly outputs
a signal to the ECM. When the ECM receives the signal, it cancels control
of vehicle speed by the dynamic radar cruise control system. The fail-safe
function operates to ...
Open in Bus 5 Main Bus Line
DESCRIPTION
There may be an open circuit in one of the CAN main bus lines when the resistance
between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway
ECU) is 70 Ω or higher.
Detection Item
Trouble Area
Resistance between ter ...