DESCRIPTION
The power steering ECU assembly is connected to the combination meter assembly via CAN communication. If the power steering ECU assembly detects a malfunction, the power steering warning light comes on. At this time, the vehicle enters fail-safe mode.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
INSPECT CAN COMMUNICATION SYSTEM |
(a) Check for DTCs of the CAN communication system (See page
).
Result |
Proceed to |
---|---|
DTC is not output |
A |
DTC is output |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BATTERY AND BODY GROUND) |
(a) Disconnect the F41 power steering ECU assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F41-5 (IG) - Body ground |
Ignition switch ON |
11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F41-3 (GND) - Body ground |
Always |
Below 1 Ω |
*a |
Front view of wire harness connector (to Power Steering ECU Assembly) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
PERFORM ACTIVE TEST USING TECHSTREAM (METER/GAUGE SYSTEM) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Perform the Active Test of the combination meter using the Techstream (See
page ).
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
PPS Indicator |
Power steering warning light |
ON or OFF |
Perform the test with the vehicle stopped and the engine idling. |
(d) Check that the power steering warning light operates in accordance with the Active Test.
HINT:
Reconnect the connectors and restore the vehicle to its previous condition before checking the combination meter.
OK:
The power steering warning light turns on and off in accordance with the Techstream operation.
OK | ![]() |
REPLACE POWER STEERING ECU ASSEMBLY |
NG | ![]() |
INSPECT METER/GAUGE SYSTEM (HOW TO WITH PROCEED TROUBLESHOOTING) |
If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Stop the engine. Set the parking
brake and shift the shift lever to P.
Remove the mud, snow or sand
from around the stuck tire.
Place wood, ston ...
Rear Occupant Classification Sensor RH Circuit Malfunction (B1783)
DESCRIPTION
The rear occupant classification sensor RH circuit consists of the occupant classification
ECU and rear occupant classification sensor RH.
DTC B1783 is stored when a malfunction is detected in the rear occupant classification
sensor RH circui ...