DESCRIPTION
This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and steering lock ECU (steering lock actuator assembly) stops for more than 10 seconds.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B2786 |
No communication between the steering lock ECU (steering lock actuator assembly) and certification ECU (smart key ECU assembly) for more than 10 seconds. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Connect the Techstream to the DLC3, and turn the courtesy switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BATTERY AND BODY GROUND) |
(a) Disconnect the D17 ECU connector. |
|
(b) Measure the resistance and voltage according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D17-1 (GND) - Body ground |
Always |
Below 1 Ω |
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D17-7 (B) - Body ground |
Always |
11 to 14 V |
*1 |
Front view of wire harness connector (to Steering Lock ECU (Steering Lock Actuator Assembly)) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - STEERING LOCK ECU) |
(a) Disconnect the D25 ECU connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D25-29 (LIN) - D17-5 (LIN) |
Always |
Below 1 Ω |
D25-29 (LIN) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) |
*2 |
Front view of wire harness connector (to Steering Lock ECU (Steering Lock Actuator Assembly)) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) |
(a) Replace the steering lock ECU (steering lock actuator assembly) (See page
).
|
4. |
CHECK DTC OUTPUT |
(a) Clear the DTC (See page ).
(b) Recheck for DTCs.
OK:
DTC B2786 is not output.
OK | ![]() |
END (STEERING LOCK ECU WAS DEFECTIVE) |
NG | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
HINT:
Use an overhaul stand as necessary.
PROCEDURE
1. INSTALL DIFFERENTIAL RING GEAR
(a) Clean the contact surfaces of the rear differential case sub-assembly and
differential ring gear.
(b) Heat the differential ri ...
Diagnosis System
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) Check the DLC3 (See page ).
2. FUNCTION OF P/S WARNING LIGHT
(a) When a malfunction is detected in the power steering system, the P/S warning
light on the accessory meter comes on to inform the driver of the malfunctio ...
System Description
SYSTEM DESCRIPTION
1. BACK DOOR CLOSER SYSTEM DESCRIPTION
(a) Operating any power back door switch when the back door is fully closed inputs
a request signal to the power back door ECU*1 or back door closer ECU*2. The power
back door ECU*1 or back door c ...