Flex AWD V6-3.5L (2009)
Trailer Lamps
Pinpoint Tests
Pinpoint Test Z: The Individual Trailer Lamp Is Inoperative - Stop/Turn Lamp
Refer to Wiring Diagram Set 95, Trailer/Camper Adapter for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
Normal Operation
The auxiliary relay box fuse 2 (15A) supplies voltage to both trailer tow stop/turn relays. The trailer tow stop/turn relay coils are grounded through
circuit GD120 (BK/GN).
The trailer tow LH stop/turn relay coil receives voltage through circuit CLS18 (GY/BN) when the vehicle LH rear stoplamp is illuminated. When the
trailer tow LH stop/turn relay is energized, the voltage is routed from circuit CB101 (BU) through the trailer tow LH stop/turn relay and circuit CAT06
(YE) to the trailer tow connector.
The trailer tow RH stop/turn relay coil receives voltage through circuit CLS19 (VT/OG) when the vehicle RH rear stoplamp is illuminated. When the
trailer tow RH stop/turn relay is energized, the voltage is routed from circuit CB101 (BU) through the trailer tow RH stop/turn relay and circuit CAT09
(GN) to the trailer tow connector.
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
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Trailer tow connector
-
Trailer tow stop/turn relay
-
Trailer
PINPOINT TEST Z: THE INDIVIDUAL TRAILER LAMP IS INOPERATIVE - STOP/TURN LAMP
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Before beginning diagnostics, visually inspect the trailer tow connector mounted on the bumper for signs of corrosion or damage. Repair or
install a new trailer tow connector as required.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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Z1 CHECK FOR VOLTAGE THROUGH THE TRAILER TOW CONNECTOR
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For the LH trailer stop/turn lamp, while applying the brake pedal, measure the voltage between the trailer tow connector LH stop/turn lamp voltage
supply pins, circuit CAT06 (YE), component side and ground.
-
For the RH trailer stop/turn lamp, while applying the brake pedal, measure the voltage between the trailer tow connector RH stop/turn lamp
voltage supply pins, circuit CAT09 (GN), component side and ground.
-
Is the voltage greater than 10 volts?
Yes