Horn Relay: Testing and Inspection

HORN: INTEGRATION RELAY: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

2. INSPECT FUSE (HORN)
(a) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ohms
If the result is not as specified, replace the fuse.
3. INSPECT INTEGRATION RELAY (HORN RELAY)
(a) Using a screwdriver, detach the 2 claws and disconnect the integration relay from the engine room No. 1 junction block.
HINT: Tape the screwdriver tip before use.

(b) Disconnect the 3 connectors from the integration relay.





(c) Measure the resistance of the HORN relay.
Standard voltage:





If the result is not as specified, replace the integration relay.
(d) Connect the 3 connectors to the integration relay.
(e) Install the integration relay to the engine room No. 1 junction block.
4. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
5. PERFORM INITIALIZATION
(a) Perform initialization ( Repair Instruction - Initialization).
CAUTION: Certain system need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.