B2325
MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: B2325: LIN Communication Bus Malfunction
B2325 - LIN Communication Bus Malfunction
DESCRIPTION
The main body ECU (instrument panel junction block assembly) monitors communication between all the ECUs connected to the door system LIN bus lines. When the main body ECU (instrument panel junction block assembly) detects errors in communication with all the ECUs connected to the door system LIN bus lines at 2.6-second intervals and 3 times in a row, DTC B2325 will be output.
HINT
*1: w/ Sliding Roof
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When using Techstream with the ignition switch off to troubleshoot:
Connect Techstream to the vehicle, and turn the courtesy switch on and off at 1.5-second intervals until communication between the tester and vehicle begins.
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - EACH ECU)
HINT
*1: w/ Sliding Roof
(a) Disconnect the D9 connector.
(b) Disconnect the H1 connector.
(c) Disconnect the Q12*1 connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. SYSTEM CHECK
(a) Check the vehicle specifications.
Result:
B -- REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
A -- Continue to next step.
3. CHECK FOR DTC (SLIDING ROOF ECU)
(a) Connect the D9 connector.
(b) Connect the H1 connector.
(c) Check for DTC.
Result:
B -- REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY Removal
A -- Continue to next step.
4. CHECK FOR DTC (POWER WINDOW ECU)
(a) Connect the Q12 connector.
(b) Disconnect the H1 connector.
(c) Recheck for DTC.
Result:
B -- REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Removal
A -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
5. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
(a) Replace the front power window regulator motor assembly LH with a normally-functioning or a new one Removal.
NEXT -- Continue to next step.
6. CHECK FOR DTC
(a) Recheck for DTC.
Result:
B -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
A -- END