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P1811 POWER SUPPLY CIRCUIT FOR AWD CONTROL MODULE DLN-45 < DTC/CIRCUIT DIAGNOSIS > [TRANSFER: TY21B] C E F G H I J K L M A B DLN N O P P1811 POWER SUPPLY CIRCUIT FOR AWD CONTROL MODULE DTC Logic INFOID:0000000012199384 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. >> GO TO 2. 2. PERFORM DTC CONFIRMATION With CONSULT 1. Turn the ignition switch OFF to ON. 2. Perform self-diagnosis for “ALL MODE AWD/4WD”. YES >> Proceed to . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000012199385 1. CHECK AWD CONTROL MODULE POWER SUPPLY (1) 1. Turn the ignition switch OFF. 2. Disconnect AWD control module harness connector. 3. Check the voltage between AWD control module harness connector and ground. 4. Turn the ignition switch ON. CAUTION: Never start the engine. 5. Check the voltage between AWD control module harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 2. 2. CHECK AWD CONTROL MODULE POWER SUPPLY (2) 1. Turn the ignition switch OFF. 2. Check the 10A fuse (Except for NISMO RS models: #23, For NISMO RS models: #33). 3. Check the harness for open or short between AWD control module harness connector No.1 terminal and 10A fuse (Except for NISMO RS models: #23, For NISMO RS models: #33). DTC Display item Malfunction detected condition Possible cause P1811 BATTERY VOLTAGE When AWD control module power sup- • Malfunction of AWD control module power supply circuit (open or short) • Malfunction of AWD control module AWD control module — Voltage Connector Terminal B47 1 Ground 11 – 13 V AWD control module — Voltage Connector Terminal B47 1 Ground 11 – 13 V |