Pinpoint Test 4

PINPOINT TEST 4: THE HAZARD LAMPS ARE INOPERATIVE/ALWAYS ON

Normal Operation
The smart junction box (SJB) sends a voltage reference signal to the multi-function switch through circuit (BR/Y). When the hazard lamp switch is engaged, the voltage signal is routed to ground. When the SJB detects a request for the hazard lamps, the SJB sends voltage to the all turn lamps.
- DTC B2071 (Hazard Switch Signal Short to Ground) - is an on-demand DTC that sets when the SJB detects a short to ground from the hazard flasher lamp switch input circuit.

Possible Causes
- Wiring, terminals or connectors
- Multi-function 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.

NOTE: The battery ground cable must be disconnected for accurate test results when checking ground circuits for continuity to ground.

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