DTC B1800: Short in D Squib Circuit; DTC B1801: Open in D Squib Circuit; DTC B1802: Short in D Squib Circuit (to Ground); DTC B1803: Short in D Squib Circuit (to +B) [02/2019 - 08/2020]: Description
The driver side squib circuit consists of the airbag ECU assembly, spiral with sensor cable sub-assembly and horn button assembly.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the driver side squib circuit.
| DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Test Mode / Check Mode |
| B1800 |
Short in D Squib Circuit |
One of the following conditions is met:
- The airbag ECU assembly detects a line short circuit signal 5 times in the driver side squib circuit during the primary check.
- A horn button assembly malfunction.
- A spiral with sensor cable sub-assembly malfunction.
- An airbag ECU assembly malfunction.
|
- Instrument panel wire
- Spiral with sensor cable sub-assembly
- Horn button assembly
- Airbag ECU assembly
|
Comes on |
Applicable |
| B1801 |
Open in D Squib Circuit |
One of the following conditions is met:
- The airbag ECU assembly detects an open circuit signal in the driver side squib circuit for 2 seconds.
- A horn button assembly malfunction.
- A spiral with sensor cable sub-assembly malfunction.
- An airbag ECU assembly malfunction.
|
- Instrument panel wire
- Spiral with sensor cable sub-assembly
- Horn button assembly
- Airbag ECU assembly
|
Comes on |
Applicable |
| B1802 |
Short in D Squib Circuit (to Ground) |
One of the following conditions is met:
- The airbag ECU assembly detects a short circuit to ground signal in the driver side squib circuit for 0.5 seconds.
- A horn button assembly malfunction.
- A spiral with sensor cable sub-assembly malfunction.
- An airbag ECU assembly malfunction.
|
- Instrument panel wire
- Spiral with sensor cable sub-assembly
- Horn button assembly
- Airbag ECU assembly
|
Comes on |
Applicable |
| B1803 |
Short in D Squib Circuit (to +B) |
One of the following conditions is met:
- The airbag ECU assembly detects a short circuit to B+ signal in the driver side squib circuit for 0.5 seconds.
- A horn button assembly malfunction.
- A spiral with sensor cable sub-assembly malfunction.
- An airbag ECU assembly malfunction.
|
- Instrument panel wire
- Spiral with sensor cable sub-assembly
- Horn button assembly
- Airbag ECU assembly
|
Comes on |
Applicable |