Pinpoint Test F: The Flash-To-Pass Feature Is Inoperative
Headlamps
Pinpoint Test
Pinpoint Test F: The Flash-To-Pass Feature Is Inoperative
Refer to Wiring Diagram Set 85, Headlamps/Autolamps for schematic and connector information. Diagrams By Number
Normal Operation
The multifunction switch is supplied voltage from the Smart Junction Box (SJB) at all times. When the multifunction switch is placed in the FLASH-TO-PASS position, the voltage is routed to the high beam circuitry.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Multifunction switch
- SJB
PINPOINT TEST F: THE FLASH-TO-PASS FEATURE IS INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
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F1 CHECK THE HIGH BEAM OPERATION
- Ignition OFF.
- Place the headlamp switch in the HEADLAMPS ON position.
- Place the multifunction switch in the HIGH BEAM position.
- Do the high beams illuminate?
Yes
GO to F2.
No
GO to Pinpoint Test C. Pinpoint Test C: Both High Beams Are Inoperative
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F2 CHECK FOR VOLTAGE TO THE MULTIFUNCTION SWITCH
- Place the headlamp switch in the OFF position.
- Disconnect: Multifunction Switch C202b.
- Measure the voltage between the multifunction switch C202b-6, circuit SBP23 (WH/RD), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
INSTALL a new multifunction switch. REFER to Steering Column. TEST the system for normal operation.
No
GO to F3.
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F3 CHECK THE MULTIFUNCTION SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Disconnect: SJB C2280b.
- Measure the resistance between the multifunction switch C202b-6, circuit SBP23 (WH/RD), harness side and the SJB C2280b-1, circuit SBP23 (WH/RD), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to F4.
No
REPAIR circuit SBP23 (WH/RD) for an open. TEST the system for normal operation.
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F4 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- 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
INSTALL a new SJB. REFER to Body Control Systems. 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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