Pinpoint Tests

Universal Transmitter

Pinpoint Tests

Pinpoint Test A: The Universal Transmitter is Inoperative

Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. Diagrams By Number

Normal Operation

The universal transmitter receives voltage on circuit CLN09 (YE/GN) and is grounded through circuit GD139 (BK/YE). These circuits are shared with the LH vanity mirror lamp.

When a programmed button is pressed on the universal transmitter, a wireless signal is sent to the receiver unit.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Receiver unit
- Universal transmitter



PINPOINT TEST A: THE UNIVERSAL TRANSMITTER IS INOPERATIVE

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

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A1 CHECK THE UNIVERSAL TRANSMITTER


- Check the illumination of the universal transmitter by pressing one of the buttons.
- Does the red indicator on the universal transmitter illuminate?

Yes
GO to A2.

No
GO to A3.

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A2 PROGRAM A HAND-HELD TRANSMITTER INTO THE UNIVERSAL TRANSMITTER


- Program the universal transmitter. Refer to Universal Transmitter Programming Programming and Relearning.
- Does the universal transmitter program successfully?

Yes
The universal transmitter is OK. VERIFY the receiver unit operates correctly.

No
INSTALL a new LH sun visor assembly. REFER to Headliner. TEST the system for normal operation.

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A3 CHECK CIRCUIT CLN09 (YE/GN) FOR VOLTAGE


- Disconnect: LH Vanity Mirror Lamp C907.
- Measure the voltage between the LH vanity mirror lamp C907-1, circuit CLN09 (YE/GN), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to A4.

No
VERIFY the Smart Junction Box (SJB) fuse 3 (15A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short.

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A4 CHECK CIRCUIT GD139 (BK/YE) FOR AN OPEN


- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the LH vanity mirror lamp C907-2, circuit GD139 (BK/YE), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new LH sun visor assembly. REFER to Headliner. TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.

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