1.CHECK DTC. Read the DTC. Read Diagnostic Trouble Code (DTC) > OPERATION | Is DTC B2350 displayed- (Current malfunction) | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2350 REAR RADAR COMMUNICATION ERROR BETWEEN MASTER AND SLAVE | Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause. |
2.CHECK HARNESS (OPEN CIRCUIT). 1) Disconnect the radar sensor connectors LH and RH. 2) Using a tester, measure the resistance between radar sensor RH connector (harness side) and radar sensor LH connector (harness side). Connector & terminal (R25) No. 1 — (R61) No. 1: (R25) No. 6 — (R61) No. 6: | Is the resistance less than 1 -- | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2350 REAR RADAR COMMUNICATION ERROR BETWEEN MASTER AND SLAVE | Repair the open circuit of harness between radar sensor RH connector and radar sensor LH connector. |
3.CHECK HARNESS (SHORT BETWEEN LINES, GROUND SHORT CIRCUIT). Using a tester, measure the resistance between radar sensor LH connectors (harness side) and the resistance between radar sensor LH connector (harness side) and chassis ground. Connector & terminal (R25) No. 1 — (R25) No. 6: (R25) No. 1 — Chassis ground: (R25) No. 6 — Chassis ground: | Is the resistance 1 M- or more- | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2350 REAR RADAR COMMUNICATION ERROR BETWEEN MASTER AND SLAVE | Repair the short circuit of harness between radar sensor RH connector and radar sensor LH connector. |
4.CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY). 1) Turn the ignition switch to ON. 2) Using a tester, measure the voltage between radar sensor LH connector (harness side) and chassis ground. Connector & terminal (R25) No. 1 (+) — Chassis ground (−): (R25) No. 6 (+) — Chassis ground (−): | Is the voltage less than 1 V- | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2350 REAR RADAR COMMUNICATION ERROR BETWEEN MASTER AND SLAVE | Repair the short to power supply in harness between radar sensor RH connector and radar sensor LH connector. |
5.CHECK RADAR SENSOR. (INTERNAL IMPEDANCE). Using a tester, measure the resistance between radar sensor LH connectors (module side) and the resistance between radar sensor RH connectors (module side). Connector & terminal (R25) No. 1 — (R25) No. 6: (R61) No. 1 — (R61) No. 6: | Is the resistance approximately 120 -- | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2350 REAR RADAR COMMUNICATION ERROR BETWEEN MASTER AND SLAVE | Replace the radar sensor RH or radar sensor LH. Radar Sensor |
6.CHECK BSD/RCTA. 1) Restore the vehicle to its original state. 2) Perform the Clear Memory Mode. Clear Memory Mode 3) Perform the Inspection Mode. Inspection Mode | Is DTC B2350 displayed- (Current malfunction) | Replace the radar sensor on the side that displayed the DTC. Radar Sensor | Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause. |
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