Dtc B2288 Steering Lock Signal Circuit Malfunction

Engine. Camry. Acv40 Gsv40
2Gr-Fe Starting. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTCS

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - STEERING LOCK ECU)

CHECK MAIN BODY ECU OPERATION

DTC B2288 Steering Lock Signal Circuit Malfunction


DESCRIPTION

This DTC is output when the main body ECU cannot detect the unlock condition of the steering lock within a specified time.
HINT:
When the main body ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.
After the main body ECU is replaced, perform the registration procedures for the engine immobiliser system.

DTC No.
DTC Detection Condition
Trouble Area
B2288
After turning engine switch from off to on (IG), the steering wheel does not unlock for a certain period of time (ECU unlocks steering wheel only when it receives an unlock signal from LIN communication and cable)
  1. Main body ECU
  2. Steering lock ECU
  3. Wire harness or connector

WIRING DIAGRAM


Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System. Dtc B2288 Steering Lock Signal Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK FOR DTCS

  1. Delete the DTCs (CAMRY_ACV40 RM000000YEH05QX.html).

  1. After all DTCs are cleared, check if the trouble occurs again 5 seconds after the engine switch is turned on (IG).

  1. Check for DTCs again.

    OK:
    DTC B2785, DTC B2287 and DTC B2781 are not output.
    HINT:
    1. If DTC B2785 is output (CAMRY_ACV40 RM000002XHV01BX.html).
    2. If DTC B2287 is output (CAMRY_ACV40 RM000000XEY04PX.html).
    3. If DTC B2271 is output (CAMRY_ACV40 RM000001LUV024X.html).


NG
GO TO DTC CHART
OK


2.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - STEERING LOCK ECU)


  1. Disconnect the E7 and E69 ECU connectors


    Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System. Dtc B2288 Steering Lock Signal Circuit Malfunction

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E7-18 (SLP) - E69-4 (SLP1)
    		Always
    		Below 1 Ω
    E7-18 (SLP) or E69-4 (SLP1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK MAIN BODY ECU OPERATION

  1. After replacing the main body ECU with a normally functioning ECU, check that the steering lock/unlock function operates normally.

    OK:
    Steering lock/unlock function operates normally.
    HINT:
    If steering lock/unlock function does not operate, refer to PROBLEM SYMPTOMS TABLE of the electrical steering lock (steering wheel cannot be unlocked) (CAMRY_ACV40 RM000000XWP02UX.html).


NG
GO TO ELECTRIC STEERING LOCK
OK

END (MAIN BODY ECU WAS DEFECTIVE)