Diagnostic Test

CHECK FOR AN ACTIVE CHARGING DTC
1. Verify that the battery is fully charged with a DVOM.
2. With the scan tool, compare the Battery Voltage listed under "Data" in the RFH View to that of the PCM. If the battery is not fully charged, correct this condition before proceeding.
3. With the scan tool, read PCM DTCs and record on the repair order.
  Are there any Battery or Charging System DTCs?
  
  Yes
  - Repair the PCM DTC(s) in accordance with Service Information. Refer to DTC INDEX .
  No
  - Go To 2
CHECK THE RF HUB
1. With the scan tool, read RF Hub DTCs and record on the repair order.
2. Start the engine and run for two minutes.
3. With the scan tool, read RF Hub DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension and repair as necessary. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (A910) FUSED B(+) OR (Z916) GROUND CIRCUIT FOR HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the Radio Frequency Hub (RF Hub) Module C1 harness connector.
3. Test the (A910) Fused B(+) circuit for high resistance by connecting a 12-volt test light between the (A910) Fused B(+) circuit and the (Z916) Ground circuit at the RF Hub C1 harness connector.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Replace the Radio Frequency Hub (RF Hub) Module in accordance with the Service Information. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL .
  - Perform the RADIO FREQUENCY HUB VERIFICATION TEST. Refer to RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST .
  No
  - Test the (A910) Fused B(+) and the (Z916) Ground circuits to determine which one has the high resistance. Repair the (A910) Fused B(+) circuit or the (Z916) Ground circuit for high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .