Remote Start Poor Performance

REMOTE START POOR PERFORMANCE

For a complete wiring diagram, refer to the Wiring Information .

Theory of Operation

The customer may notice that the signal range of the Remote Keyless Entry (RKE) system is reduced. The RKE key fob may need to be closer than 3 meters (10 feet) before the functions available on the key fob will operate. This condition may be due to the RKE antenna. The diagnostic flow chart is provide as a diagnostic aid for dealer technician.

1. LOCK/UNLOCK FUNCTION

NOTE: For all RKE tests, the key must be out of the ignition.

Does the Lock/Unlock function with the interior door switches?

Yes

- Go To 2

No

- Perform Power Lock/Unlock System diagnosis.

2. RKE FUNCTION AT 20 FEET

Does the RKE Function at 20 feet?

Yes

- Go To 3

No

- Go To 4

3. RKE FUNCTION AT 100 FEET

Does the RKE Function at 100 feet?

Yes

- Test complete.

No

- Replace the antenna.

4. WCM/WIN DTCS

Does the WCM/WIN display any DTCs?

Yes

- Perform WCM/WIN diagnosis.

No

- Go To 5

5. RKE FUNCTION INSIDE VEHICLE
1. Sit inside the vehicle.
2. Push the Key Fob RKE Lock/Unlock buttons.

Does the RKE Lock/Unlock work?

Yes

- Go To 6

No

- Go To 9

6. ANTENNA COAX CABLE NOT PROPERLY CONNECTED
1. Pull on the Antenna COAX cable connector at the WCM/WIN.

Did the connector come off without releasing the lock tab (not properly seated)?

Yes

- Connect Antenna
- Go To 2

No

- Go To 7

7. VERIFY COAX CONNECTION AT WCM/WIN
1. Pull Antenna connector off WCM/WIN. Verify no bent pins.

Are there any bent pins?

Yes

- Replace antenna.
- Go To 2

No

- Go To 8

8. PINCHED WIRE
1. Inspect the ANTENNA Lead COAX Cable for a pinched wire.

Has the COAX cable been pinched or damaged?

Yes

- Replace antenna.
- Go To 2

No

- Perform WCM/WIN diagnostics.

9. RKE FUNCTION INSIDE VEHICLE
1. Disconnect the Antenna COAX Cable lead connector to WCM/WIN.
2. Sit inside the vehicle. Push the RKE Key Fob Lock/Unlock buttons.

Does the RKE Lock/Unlock work?

Yes

- Replace the antenna.

No

- Go To 10

10. CHECK FOR 12 VOLTS AT WCM/WIN
1. Connect the Antenna Lead to WCM/WIN.
2. Disconnect the WCM/WIN harness connector.
3. Using the appropriate wiring diagrams, check for Fused B+ at the WCM/WIN harness connector.

Is Fused B+ present?

Yes

- Perform WCM/WIN diagnostics.

No

- Repair the appropriate circuits.