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 the timed battery saver relay circuit CLN09. The universal transmitter shares its power and ground circuits with the LH vanity mirror lamp. When a programmed button on the universal transmitter is pressed, a wireless signal is sent to the receiver unit.

If the device does not operate the garage door, it may be due to an incorrect programming procedure being carried out. Refer to Universal Transmitter Programming Programming and Relearning to verify the universal transmitter was correctly programmed. If necessary, contact the Lear Car2U(R) Customer Service Center at 866-572-2728, or the customer support website at www.learcar2u.com .

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Universal transmitter
- Receiver unit



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


- Turn the LH vanity mirror lamp on.
- Does the LH vanity mirror operate correctly?

Yes
GO to A2.

No
GO to A3.

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A2 PROGRAM A HAND-HELD TRANSMITTER TO 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. TEST the system for normal operation.

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A3 CHECK THE VANITY MIRROR LAMP POWER CIRCUIT FOR VOLTAGE


- Ignition OFF.
- Disconnect: LH Vanity Mirror Lamp C907.
- Ignition ON.
- 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
REPAIR the circuit. TEST the system for normal operation.

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A4 CHECK THE VANITY MIRROR LAMP GROUND CIRCUIT FOR AN OPEN


- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the LH vanity mirror lamp C907-2, circuit GD133 (BK), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new LH sun visor assembly. CONNECT the negative battery cable. TEST the system for normal operation.

No
REPAIR the circuit. CONNECT the negative battery cable. TEST the system for normal operation.

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