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.