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PCS-50 < DTC/CIRCUIT DIAGNOSIS > [POWER DISTRIBUTION SYSTEM] B2553 IGNITION RELAY B2553 IGNITION RELAY Description INFOID:0000000005240672 BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned DTC Logic INFOID:0000000005240673 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON under the following conditions (start the engine), and wait for at least 2 seconds. - Selector lever is in the P or N position. - Do not depress brake pedal. 2. Check “Self diagnostic result” with CONSULT-III. Is DTC detected? YES >> Go to NO >> INSPECTION END Diagnosis Procedure INFOID:0000000005240674 1. CHECK DTC WITH IPDM E/R Check “Self diagnostic result” with CONSULT-III. Refer to Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace malfunctioning parts. 2. CHECK FUSE Check that the following fuse is not blown. Is the fuse blown? YES >> Replace the blown fuse after repairing the affected circuit if a fuse is blown. NO >> GO TO 3. 3. CHECK IGNITION RELAY FEEDBACK INPUT 1. Turn ignition switch OFF. 2. Disconnect BCM connector. 3. Check voltage between BCM harness connector and ground. DTC No. Trouble diagnosis name DTC detecting condition Possible cause B2553 IGN POWER CIRCUIT BCM detects a difference of signal for 2 seconds • Harness or connectors (Ignition relay feedback circuit is • Fuse Signal name Connection position Fuse No. Capacity Ignition power supply IPDM E/R 44 10A |