| 1 |
CHECK POWER SUPPLY TO HORN
- Disconnect horn connector 0922-201.
- Measure the voltage between the horn 0922-201 pin 1, circuit Y/LG, harness side and ground with the horn switch pressed.
- Is the voltage greater than 10 volts?
|
Yes |
Go to step 2. |
| No |
Go to step 3. |
| 2 |
CHECK CIRCUIT (B) FOR AN OPEN
- Measure the resistance between the horn 0922-201 pin 2, circuit B, harness side and ground.
- Is the resistance less than 5 ohms?
|
Yes |
Install a new horn. See HORN REMOVAL/INSTALLATION
. Test the system for normal operation. |
| No |
Repair the circuit. Test the system for normal operation. |
| 3 |
BYPASS SMART JUNCTION BOX (SJB)
- Connect horn connector 0922-201.
- Disconnect SJB connector J-2280a.
- Connect a jumper wire between the SJB J-2280a pin 30, circuit Y/LG, harness side and between the SJB J-2280a pin 32, circuit R, harness side.
- Does the horn sound?
|
Yes |
Go to step 4. |
| No |
Repair Y/LG wire. Test the system for normal operation. |
| 4 |
CHECK THE HORN SWITCH CIRCUIT (DL) AT SJB FOR AN OPEN
- Disconnect the SJB connector J-2280d.
- Measure the resistance between SJB J-2280d pin 18, circuit DL, harness side and ground with the horn switch pressed, then released.
- Is the resistance less than 5 ohms with the horn switch pressed, and greater than 10,000 ohms with the horn switch released?
|
Yes |
Go to step 7. |
| No |
Go to step 5. |
| 5 |
CHECK CIRCUIT DL FOR AN OPEN
- Deactivate the air bag system; see SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION
.
- Key OFF.
- Disconnect the air bag sliding contact connector 0922-202.
- Measure the resistance between the air bag sliding contact 0922-202 pin 5, circuit DL, harness side and SJB J-2280d pin 18, circuit DL, harness side.
- Is the resistance less than 5 ohms between the horn relay connector and horn; and greater than 10,000 ohms between the horn relay connector and ground?
|
Yes |
Go to step 6. |
| No |
Repair the (DL) wire. Test the system for normal operation. |
| 6 |
CHECK AIR BAG SLIDING CONTACT
- Key OFF.
- Disconnect the upper air bag sliding contact connector.
- Measure the resistance between the air bag sliding contact 0922-202 pin 5, circuit DL, component side and the upper air bag sliding contact connector pin 5, component side.
- Measure the resistance between the air bag sliding contact 0922-202 pin 2, circuit B/W, component side and the upper air bag sliding contact connector pin 1, circuit B/W, component side.
- Are the resistances less than 5 ohms?
|
Yes |
Replace the horn switch. See HORN SWITCH REMOVAL/INSTALLATION
. Test the system for normal operation. |
| No |
Install a new air bag sliding contact (clockspring). See AIR BAG SLIDING CONTACT (CLOCKSPRING) REMOVAL/INSTALLATION
. Test the system for normal operation. |
| 7 |
CHECK THE SJB FOR CORRECT OPERATION
- Disconnect all the SJB connectors.
- Check for corrosion and pushed-out pins.
- Connect all the SJB connectors and make sure they seat correctly.
- operate the system and verify the concern is still present.
- Is the concern still present?
|
Yes |
Replace the SJB. See SMART JUNCTION BOX (SJB) REMOVAL/INSTALLATION
. Test the system for normal operation. |
| No |
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. |
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