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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> ADAS Control Unit (Diagnostics) >> Ecu Diagnosis Information >> ADAS Control Unit >> DTC Inspection Priority Chart

DTC Inspection Priority Chart

If multiple DTCs are detected simultaneously, check them one by one depending on the following DTC inspection priority chart.

Without Direct adaptive steering system

Priority

Detected items (DTC)

1

  • U1507-87: LOST COMM (SIDE RDR R)
  • U1508-87: LOST COMM (SIDE RDR L)

2

  • C1A0A-55: CONFIG UNFINISHED
  • U1000-01: CAN COMM CIRCUIT
  • U1010-49: CONTROL UNIT (CAN)

3

  • C1B00-97: CAMERA UNIT MALF
  • C1B53-97: SIDE RDR R MALF
  • C1B54-97: SIDE RDR L MALF
  • C1B84-97: DIST SEN MALFUNCTION

4

  • C10C8-97: Electric power steering circuit
  • C1608-97: Electric parking brake circuit
  • C1A01-A2: POWER SUPPLY CIR
  • C1A02-A3: POWER SUPPLY CIR 2
  • C1A04-97: ABS/TCS/VDC CIRC
  • C1A05-64: BRAKE SW/STOP L SW
  • C1A06-23: OPERATION SW CIRC
  • C1A06-97: OPERATION SW CIRC
  • C1A07-97: CVT
  • C1A13-23: STOP LAMP RLY FIX
  • C1A13-24: STOP LAMP RLY FIX
  • C1A14-62: ECM CIRCUIT
  • C1A14-64: ECM CIRCUIT
  • C1A14-97: ECM CIRCUIT
  • C1A24-97: NP RANGE
  • C1A26-97: ABS/TCS/VDC CIRC
  • C1A27-97: ECD PWR SUPLY CIR
  • C1A2F-54: Hands off threshold incomplete
  • C1A33-97: CAN TRANSMISSION ERR
  • C1A34-64: COMMAND ERROR
  • C1A39-97: STRG SEN CIR
  • C1A40-23: SYSTEM SW CIR
  • C1A40-24: SYSTEM SW CIR
  • C1A48-82: Electric power steering CAN circuit1
  • C1A4A-82: TCM CAN circuit1
  • C1B01-55: CAM AIMING INCMP
  • C1B03-4B: CAM ABNRML TMP DETCT
  • C1B5D-97: FEB OPE COUNT LIMIT
  • C1B56-97: SONAR CIRCUIT
  • C1B57-97: AVM CIRCUIT
  • C1B58-97: DR ASSIST BUZZER CIRCUIT
  • C1B59-97: CCM CIRCUIT
  • C1B5A-29: G SENSOR MALF
  • C1B5E-83: ECM CAN CIR 4
  • C1B82-97: DIST SEN OFF-CENTER
  • C1B85-4B: DIST SEN ABNORMAL TEMP
  • C1B86-A2: DIST SEN PWR SUP CIR
  • U0121-83: VDC CAN CIR 2
  • U0126-82: STRG SEN CAN CIR 1
  • U0155-82: MET CAN CIR1
  • U0235-82: ICC SENSOR CAN CIRC 1
  • U0401-82: ECM CAN CIR 1
  • U0402-82: TCM CAN CIR 1
  • U0415-82: VDC CAN CIR 1
  • U0420-82: ELECTRIC POWER STEERING CAN CIRCUIT
  • U0420-83: ELECTRIC POWER STEERING CAN CIRCUIT
  • U0424-82: HVAC CAN CIR 1
  • U0428-83: STRG SEN CAN CIR 2
  • U0433-83: DIST SENS CAN CIRC2
  • U1090-82: ELECTRIC PARKING BRAKE CAN CIRCUIT
  • U1090-83: ELECTRIC PARKING BRAKE CAN CIRCUIT
  • U1500-00: CAM CAN CIR 2
  • U1500-83: CAM CAN CIR 2
  • U1501-00: CAM CAN CIR 1
  • U1501-82: CAM CAN CIR 1
  • U1502-08: ICC SEN CAN COMM ERR
  • U1503-83: SIDE RDR L CAN CIRC 2
  • U1504-82: SIDE RDR L CAN CIRC 1
  • U1505-83: SIDE RDR R CAN CIRC 2
  • U1506-82: SIDE RDR R CAN CIRC 1
  • U1521-83: SONAR CAN COMMUNICATION 2
  • U1522-82: SONAR CAN COMMUNICATION 1
  • U1524-82: AVM CAN COMMUNICATION 1
  • U1525-81: AVM CAN COMMUNICATION 3
  • U1527-82: CCM CAN CIR 1
  • U153F-83: CCM CAN CIR 2
  • U1536-83: AVM CAN COMMUNICATION 2
  • U2141-83: CAN comm err (TCM)
  • U214E-83: CAN comm err (combination meter)
  • U214F-83: CAN comm err (BCM)

5

  • C1A03-29: VHCL SPEED SE CIRC
  • C1A03-64: VHCL SPEED SE CIRC

6

  • C1A15-64: GEAR POSITION

7

  • C1A00-44: CONTROL UNIT
  • C1A00-45: CONTROL UNIT
  • C1A00-46: CONTROL UNIT
  • C1A00-48: CONTROL UNIT
  • C1A00-49: CONTROL UNIT
With Direct adaptive steering system

Priority

Detected items (DTC)

1

  • U1507-00: LOST COMM (SIDE RDR R)
  • U1508-00: LOST COMM (SIDE RDR L)

2

  • C1A0A-00: CONFIG UNFINISHED
  • U1000-01: CAN COMM CIRCUIT
  • U1010-49: CONTROL UNIT (CAN)

3

  • C1B00-00: CAMERA UNIT MALF
  • C1F02-00: APA C/U MALF
  • C1B53-00: SIDE RDR R MALF
  • C1B54-00: SIDE RDR L MALF
  • C1B84-00: DIST SEN MALFUNCTION

4

  • C1A01-00: POWER SUPPLY CIR
  • C1A02-00: POWER SUPPLY CIR 2
  • C1A04-00: ABS/TCS/VDC CIRC
  • C1A05-00: BRAKE SW/STOP L SW
  • C1A06-00: OPERATION SW CIRC
  • C1A07-00: CVT CIRCUIT
  • C1A13-00: STOP LAMP RLY FIX
  • C1A14-00: ECM CIRCUIT
  • C1A24-00: NP RANGE
  • C1A26-00: ECD MODE MALF
  • C1A27-00: ECD PWR SUPLY CIR
  • C1A2D-16-00: STEERING VIB MOTOR MALF
  • C1A2D-17-00: STEERING VIB MOTOR MALF
  • C1A2F-54: Hands off threshold incomplete
  • C1A33-00: CAN TRANSMISSION ERR
  • C1A34-00: COMMAND ERROR
  • C1A35-00: APA CIR
  • C1A36-00: APA CAN COMM CIR
  • C1A37-00: APA CAN CIR 2
  • C1A38-00: APA CAN CIR 1
  • C1A39-00: STRG SEN CIR
  • C1A3C-97: DAST
  • C10C8-97: ELECTRIC POWER STEERING CIRCUIT
  • C1608-97: ELECTRIC PARKING BRAKE CIRCUIT
  • C1A25-00: SHIFT RANGE IND
  • C1A40-00: SYSTEM SW CIR
  • C1B01-00: CAM AIMING INCMP
  • C1B03-00: CAM ABNRML TMP DETCT
  • C1B5D-00: FEB OPE COUNT LIMIT
  • C1B56-00: SONAR CIRCUIT
  • C1B59-00: CCM CIRCUIT
  • C1B85-00: DIST SEN ABNORMAL TEMP
  • C1B5A-00: G SENSOR MALF
  • C1B5C-00: G SENSOR LEARN INCT
  • C1B5E-00: ECM CAN CIRCUIT 4
  • C1B58-00: DR ASSIST BUZZER CIRCUIT
  • C1B59-97: CCM CIRCUIT
  • C1B83-00: DIST SEN BLOCKED
  • C1F01-00: APA MOTOR MALF
  • C1F05-00: APA PWR SUPLY CIR
  • U0121-00: VDC CAN CIR2
  • U0126-00: STRG SEN CAN CIR1
  • U0235-00: ICC SENSOR CAN CIRC1
  • U0401-00: ECM CAN CIR1
  • U0402-00: TCM CAN CIR1
  • U0415-00: VDC CAN CIR1
  • U0424-00: HVAC CAN CIR 1
  • U0428-00: STRG SEN CAN CIR2
  • U1500-00: CAM CAN CIR2
  • U1501-00: CAM CAN CIR 1
  • U1502-00: ICC SEN CAN COMM CIR
  • U1503-00: SIDE RDR L CAN CIR 2
  • U1504-00: SIDE RDR L CAN CIR 1
  • U1505-00: SIDE RDR R CAN CIR 2
  • U1506-00: SIDE RDR R CAN CIR 1
  • U150B-00: ECM CAN CIRC 3
  • U150C-00: VDC CAN CIRC 3
  • U150D-00: TCM CAN CIRC 3
  • U150E-00: BCM CAN CIRC 3
  • U150F-00: AV CAN CIRC 3
  • U1512-00: HVAC CAN CIRC 3
  • U1513-00: METER CAN CIRC 3
  • U1514-00: STRG SEN CAN CIRC 3
  • U1515-00: ICC SENSOR CAN CIRC 3
  • U1516-00: CAM CAN CIRC 3
  • U1517-00: APA CAN CIRC 3
  • U1518-00: SIDE RDR L CAN CIRC 3
  • U1519-00: SIDE RDR R CAN CIRC 3
  • U1521-00: SONAR CAN COMMUNICATION 2
  • U1522-00: SONAR CAN COMMUNICATION 1
  • U1523-00: SONAR CAN COMMUNICATION 3
  • U1524-00: AVM CAN COMMUNICATION 1
  • U1525-00: AVM CAN COMMUNICATION 3
  • U1527-00: CCM CAN CIR 1
  • U153F-00: CCM CAN CIR 2
  • U1530-00: DR ASSIST BUZZER CAN CIR 1
  • U1540-00: DAST 3 CAN CIR 1
  • U1541-00: DAST 3 CAN CIR 2
  • U0155-00: METER CAN CIRC 1
  • U0420-82: ELECTRIC POWER STEERING CAN CIRCUIT
  • U0420-83: ELECTRIC POWER STEERING CAN CIRCUIT
  • U1090-82: ELECTRIC PARKING BRAKE CAN CIRCUIT
  • U1090-83: ELECTRIC PARKING BRAKE CAN CIRCUIT
  • U1520-00: 4WD CAN CIRC 3
  • U1536-00: AVM CAN COMMUNICATION 2

5

  • C1A03-00: VHCL SPEED SE CIRC

6

  • C1A15-00: GEAR POSITION

7

  • C1A00-00: CONTROL UNIT