DTC Table: Notes
WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- SAE code: Displayed on SUZUKI scan tool.
- LCD code: Displayed on HVAC control module.
- LCD on HVAC control module displays DTCs in order of descending priorities if several DTCs exist.
- DTC B1504-H, B1541, B1546, B1563, B1570, B1571 and B1580 (DTC 4.1, 50.1, 13.4, 13.6, 38.4, 39.4 and 62.6) are displayed as a current DTC only when a current malfunction is detected.
- As DTC B1504 cannot be displayed on SUZUKI scan tool, check B1504 in "Not Using SUZUKI Scan Tool" under DTC Check :Auto A/C.
DTC DESCRIPTION CHART
| DTC | Detecting item | DTC detecting condition | Priority of LCD code displaying | "AUTO" indicator | |||
|---|---|---|---|---|---|---|---|
| SAE code | LCD code | Current | History | ||||
| - | End | - | Normal | - | - | - | |
| B1502 | H | 2.1 | Inside Air Temperature Sensor Circuit Malfunction | Signal voltage of inside air temperature sensor is higher than specification. | 2 | 1 | Flash |
| L | 2.2 | Signal voltage of inside air temperature sensor is lower than specification. | 3 | 2 | Flash | ||
| B1503 | H | 3.1 | Evaporator Temperature Sensor Circuit Malfunction | Signal voltage of evaporator temperature sensor is higher than specification. | 4 | 3 | Flash |
| L | 3.2 | Signal voltage of evaporator temperature sensor is lower than specification. | 5 | 4 | Flash | ||
| B1504 | H | 4.1 | Sun Load Sensor Circuit Malfunction | Signal voltage of sunload sensor is higher than specification. | 22 | - | - |
| L | 4.2 | Signal voltage of sunload sensor is lower than specification. | 6 | 5 | Flash | ||
| B1511 | H | 20.1 | Temperature Control Actuator (Position Sensor) and/or Its Circuit Malfunction | Signal voltage of position sensor included in temperature control actuator is higher than specification. | 7 | 6 | Flash |
| L | 20.2 | Signal voltage of position sensor included in temperature control actuator is lower than specification. | 8 | 7 | Flash | ||
| B1512 | H | 23.1 | Air Flow Control Actuator (Position Sensor) and/or Its Circuit Malfunction | Signal voltage of position sensor included in air flow control actuator is higher than specification. | 9 | 8 | Flash |
| L | 23.2 | Signal voltage of position sensor included in air flow control actuator is lower than specification. | 10 | 9 | Flash | ||
| B1513 | 20.3 | Temperature Control Actuator (Motor) and/or Its Circuit Malfunction | Motor of temperature control actuator is not operated more than specified time. | 11 | 10 | Flash | |
| B1514 | 23.3 | Air Flow Control Actuator (Motor) and/or Its Circuit Malfunction | Motor of air flow control actuator is not operated more than specified time. | 12 | 11 | Flash | |
| B1541 | 50.1 | Back-up Power Supply Circuit Malfunction | Backup power supply voltage of HVAC control module is higher than or lower than specification. | 13 | - | - | |
| B1546 | 13.6 | A/C Refrigerant Pressure Malfunction | Signal voltage of outside air temperature sensor is more than specified value. However, A/C refrigerant pressure is less than specified value. | 25 | - | - | |
| B1551 | H | 32.1 | Serial Communication Circuit Malfunction | Circuit voltage of serial communication circuit is higher than specification. | 14 | 12 | Flash |
| L | 32.2 | Circuit voltage of serial communication circuit is lower than specification. | 15 | 13 | Flash | ||
| B1552 | 32.4 | HVAC Control Module Check Sum Error | HVAC control module received unspecified data from BCM more than 8 times. | 16 | 14 | Flash | |
| B1553 | 37.4 | CAN Communication Circuit Malfunction | HVAC control module received signal indicating reception error from BCM. | 17 | 15 | Flash | |
| B1557 | 11.4 | VSS Signal Failure | HVAC control module receives invalid data of VSS signal from BCM. | 20 | 18 | - | |
| B1561 | 10.4 | ECT Signal Failure | HVAC control module receives invalid data of ECT signal from BCM. | 18 | 16 | Flash | |
| B1562 | 1.4 | Outside Temperature Sensor Signal Failure | HVAC control module receives invalid data of outside air temperature sensor signal from BCM. | 19 | 17 | Flash | |
| B1563 | 13.4 | A/C Refrigerant Pressure Sensor Signal Failure | HVAC control module receives invalid data of A/C refrigerant pressure sensor signal from BCM. | 21 | - | - | |
| B1570 | 38.4 | Engine Type Signal Failure | HVAC control module receives invalid data of engine type signal from BCM. | 24 | - | - | |
| B1571 | 39.4 | Combination Meter Spec Signal Failure | HVAC control module receives invalid data of combination meter spec signal from BCM. | 23 | - | Flash | |
| B1580 | 62.6 | EEPROM error | Error has occurred to EEPROM in HVAC control module. | 1 | - | - | |