Starting - Non-Dtc Based Diagnostics Jeep Grand Cherokee WK2

REMOTE START INHIBITORS

1. Using the scan tool, select ECU VIEW.
2. Select the TIPM or FCM section.
3. Select MORE OPTIONS
4. Select SYSTEM TESTS
5. Select REMOTE START INHIBIT DATA.

The following table below is a list of possible causes for the inoperative Remote Start System. If any of the following conditions exist, the Remote Start System will not work. Use this information as a guide to the diagnosis of the Remote Start System.

1. ABORT
2. BATTERY VOLTAGE HIGH
3. BATTERY VOLTAGE LOW
4. BRAKE PRESSED
5. COOLANT TEMPERATURE HIGH
6. CRANK NO START
7. DRIVER DOOR AJAR
8. PASSENGER DOOR AJAR
9. LEFT REAR DOOR AJAR
10. RIGHT REAR DOOR AJAR
11. TRUNK/LIFTGATE AJAR
12. HOOD AJAR
13. NO HOOD SWITCH (INOPERATIVE)
14. EXCESSIVE GLOW PLUG TIME (DIESEL ONLY)
15. FAILED COUNTER REACHED (START)
16. HAZARD LAMPS (SWITCH PRESSED)
17. IGNITION IN RUN/START
18. IGNITION NOT IN LOCK
19. IGNITION SNA (SIGNAL NOT AVAILABLE FROM OTHER MODULE)
20. INVALID KEY
21. KEY IN IGNITION
22. LOW RPM SHUTDOWN
23. MIL ON
24. NO AUTOMATIC TRANSMISSION
25. NORMAL TIME OUT CUSTOMER ACCESS
26. NORMAL TIME OUT RUN MODE (15 MINUTES)
27. NOT CONFIGURED
28. NOT ENABLED
29. NOT IN PARK OR NEUTRAL
30. NOT PROGRAMMED
31. OIL PRESSURE LOW
32. PANIC MODE (ACTIVATED)
33. POWER LOSS
34. RKE OFF MESSAGE
35. RPM TOO HIGH (EXCEEDS 2500)
36. START COUNTER REACHED
37. VEHICLE SPEED HIGH
38. VTA ALARMING

If all of the previous items checked OK, and the remote starting system will not operate, refer to the REMOTE START POOR PERFORMANCE diagnostic procedure. . Refer to DIAGNOSIS AND TESTING .

REMOTE START POOR PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

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.

DIAGNOSTIC TEST

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 in accordance with the Service Information.
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 Sit inside the vehicle. 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 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 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 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 Disconnect the Antenna COAX Cable lead connector to WCM/WIN. 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 Connect the Antenna Lead to WCM/WIN. Disconnect the WCM/WIN harness connector. 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.

See also:
• DIAGNOSIS AND TESTING