Pinpoint Test 4: The High Beams Are Always On

PINPOINT TEST 4: THE HIGH BEAMS ARE ALWAYS ON

Refer to the Tribute Wiring Diagrams for schematic and connector information.

Normal Operation

The Smart Junction Box (SJB) sends reference signals to the multifunction switch through circuits (GY/BR) and (G/BR). When the multifunction switch is placed in the FLASH-TO-PASS or HIGH BEAM position, the voltage signal is routed to ground. When the SJB detects a request for flash-to-pass or high beams (when the low beams are on), the SJB energizes the high beam relay (integral to the SJB), which routes voltage through circuit (Y/V) to the headlamps.

- DTC B1510 (Flash To Pass Switch Circuit Short to Ground) - an on-demand DTC that sets when the SJB detects a short to ground from the flash-to-pass request input circuit.
- DTC B2A23 (High Beam Input Circuit Short to Ground) - an on-demand DTC that sets when the SJB detects a short to ground from the high beam request input circuit.

Possible Causes
- Wiring, terminals or connectors
- Multifunction switch
- SJB

Diagnostic Procedure

CAUTION:Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.