DTC B1820: Short in Side Squib (RH) Circuit; DTC B1821: Open in Side Squib (RH) Circuit; DTC B1822: Short in Side Squib (RH) Circuit (to Ground); DTC B1823: Short in Side Squib (RH) Circuit (to +B) [10/2018 - ]: Description
The front side squib RH circuit consists of the airbag ECU assembly and front seat airbag assembly RH.
The airbag ECU assembly uses this circuit to deploy the airbag when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the front side squib RH circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Test Mode / Check Mode |
|---|---|---|---|---|---|
| B1820 | Short in Side Squib (RH) Circuit |
|
|
Comes on | Applies to check mode |
| B1821 | Open in Side Squib (RH) Circuit |
|
|
Comes on | Applies to check mode |
| B1822 | Short in Side Squib (RH) Circuit (to Ground) |
|
|
Comes on | Applies to check mode |
| B1823 | Short in Side Squib (RH) Circuit (to +B) |
|
|
Comes on | Applies to check mode |
DTC DETECTION CONDITIONS (B1820)
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | Ignition switch ON | ◦ | ◦ | ◦ |
| Malfunction Status | The airbag ECU assembly detects a line short in the front side squib RH circuit during the primary check | ◦ | - | - |
| Front side squib RH malfunction | - | ◦ | - | |
| Airbag ECU assembly malfunction | - | - | ◦ | |
| Detection Time | - | - | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
DTC DETECTION CONDITIONS (B1821)
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | Ignition switch ON | ◦ | ◦ | ◦ |
| Malfunction Status | The airbag ECU assembly detects an open in the front side squib RH circuit | ◦ | - | - |
| Front side squib RH malfunction | - | ◦ | - | |
| Airbag ECU assembly malfunction | - | - | ◦ | |
| Detection Time | - | - | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
DTC DETECTION CONDITIONS (B1822)
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | Ignition switch ON | ◦ | ◦ | ◦ |
| Malfunction Status | The airbag ECU assembly detects a short to ground in the front side squib RH circuit | ◦ | - | - |
| Front side squib RH malfunction | - | ◦ | - | |
| Airbag ECU assembly malfunction | - | - | ◦ | |
| Detection Time | - | - | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
DTC DETECTION CONDITIONS (B1823)
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | Ignition switch ON | ◦ | ◦ | ◦ |
| Malfunction Status | The airbag ECU assembly detects a short to B+ in the front side squib RH circuit | ◦ | - | - |
| Front side squib RH malfunction | - | ◦ | - | |
| Airbag ECU assembly malfunction | - | - | ◦ | |
| Detection Time | - | - | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.