Diagnostic Test
- READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN
- With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
- With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
- With the scan tool, erase all DTCs.
- Turn the ignition off for a minimum of 10.0 seconds.
- Turn the ignition on.
- Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
- With the scan tool, read DTCs.
Did the DTC return?
Yes
- Go To 2
No
- Perform the appropriate INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
- TEST THE GPS ANTENNA CABLE
- Disconnect the Satellite/GPS Antenna cable at the Satellite Antenna.
- Connect the appropriate Radio Diagnostic Tool (special tool #9977-6-1, Adapter) or (special tool #9977-6-3, Adapter) to the GPS Antenna cable at the back of the EAM.
- Connect the appropriate Radio Diagnostic Tool (special tool #9977-6-4, Jumper) or (special tool #9977-6-2, Jumper) to the GPS Antenna cable at the GPS Antenna base.
- Measure the Resistance across the terminals on the tool.
Is the resistance below 47.5 Ohms?
Yes
- Use the (special tool #9977-6, Kit, Radio Antenna Diagnostic) to locate the short, repair or replace the GPS Antenna cable as necessary.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 3
- EMERGENCY ASSISTANCE MODULE (EAM)
- Visually inspect the terminals on the EAM.
- Ensure the terminal is clean and free of any corrosion or damage.
- Is the terminal free of corrosion and damage?
Yes
- Replace the EAM in accordance with the service information.
Refer to MODULE, GLOBAL TELEMATICS BOX, REMOVAL AND INSTALLATION .
- Perform the BODY VERIFICATION TEST.
Refer to BODY VERIFICATION TEST .
No
- Repair the terminal as necessary.
- Perform the BODY VERIFICATION TEST.
Refer to BODY VERIFICATION TEST .