Power Liftgate Module (PLGM)

B2199-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD





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

- When Monitored:
At all times.

- Set Condition:
Whenever the liftgate is activated, if the voltage is below 10.5 volts, within 15 seconds prior to power operation, this code will set.





1. CHECK FOR PCM DTCS

NOTE: Make sure the battery is fully charged and serviceable before proceeding.

1. With the scan tool, read the PCM DTCs

Are there any PCM Battery or Charging System DTCs present?

Yes

- Testing and Inspection and perform the appropriate Diagnostic Procedure.

No

- Go To 2.

2. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase the DTCs.
2. Start the engine and run for two minutes.
3. With the scan tool, read Power Liftgate Module Active DTCs.

Does the scan tool display; B2199-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD?

Yes

- Go To 3

No

- Test complete, 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 poor pin fit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. CHECK THE (A115) FUSED B(+) CIRCUIT FOR AN OPEN OR HIGH RESISTANCE




1. Turn the ignition off.
2. Disconnect the Power Liftgate Module C2 harness connector.
3. Start the engine.
4. Measure the voltage between ground and the (A115) Fused B(+) circuit in the Power Liftgate C2 connector.
5. Compare the voltage read at the PLG C2 connector with a direct connection at the battery.

Is the voltage at the PLG C2 connector within 0.5 of a volt of the battery voltage?

Yes

- Go To 4

No

- Repair the (A115) Fused B(+) circuit for an open or high resistance.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (Z916) GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE




1. Turn the ignition off.
2. Using a 12 volt test light, connect one end to the (A115) Fused B(+) circuit and the other end to the (Z916) Ground in the Liftgate C2 harness connector.

NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery

Does the test tight illuminate brightly?

Yes

- Replace the Power Liftgate Module. Power Liftgate Control Module - Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (Z916) Ground circuit for an open or high resistance.
- Perform BODY VERIFICATION TEST. Body Verification Test.