DTC B1920: Short in Rear P/T Squib (RH) Circuit; DTC B1921: Open in Rear P/T Squib (RH) Circuit; DTC B1922: Short in Rear P/T Squib (RH) Circuit (to Ground); DTC B1923: Short in Rear P/T Squib (RH) Circuit (to +B) [10/2018 - ]: Description
The rear pretensioner squib RH circuit consists of the airbag ECU assembly and rear seat outer belt assembly RH.
The airbag ECU assembly uses this circuit to deploy the pretensioner when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the rear pretensioner squib RH circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Test Mode / Check Mode |
|---|---|---|---|---|---|
| B1920 | Short in Rear P/T Squib (RH) Circuit |
|
|
Comes on | Applies to check mode |
| B1921 | Open in Rear P/T Squib (RH) Circuit |
|
|
Comes on | Applies to check mode |
| B1922 | Short in Rear P/T Squib (RH) Circuit (to Ground) |
|
|
Comes on | Applies to check mode |
| B1923 | Short in Rear P/T Squib (RH) Circuit (to +B) |
|
|
Comes on | Applies to check mode |
DTC DETECTION CONDITIONS (B1920)
| 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 rear pretensioner squib RH circuit during the primary check | ◦ | - | - |
| Rear pretensioner squib RH malfunction | - | ◦ | - | |
| Airbag ECU assembly malfunction | - | - | ◦ | |
| Detection Time | - | - | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
DTC DETECTION CONDITIONS (B1921)
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | Ignition switch ON | ◦ | ◦ | ◦ |
| Malfunction Status | The airbag ECU assembly detects an open in the rear pretensioner squib RH circuit | ◦ | - | - |
| Rear pretensioner squib RH malfunction | - | ◦ | - | |
| Airbag ECU assembly malfunction | - | - | ◦ | |
| Detection Time | - | - | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
DTC DETECTION CONDITIONS (B1922)
| 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 rear pretensioner squib RH circuit | ◦ | - | - |
| Rear pretensioner squib RH malfunction | - | ◦ | - | |
| Airbag ECU assembly malfunction | - | - | ◦ | |
| Detection Time | - | - | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
DTC DETECTION CONDITIONS (B1923)
| 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 rear pretensioner squib RH circuit | ◦ | - | - |
| Rear pretensioner 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.