B2199-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD

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

When Monitored:
Continuously.
Set Conditions:
Any time the Tire Pressure Monitoring (TPM) Module senses voltage input below 8.0 volts for over 20 ms, this code will set.

Possible Causes

NON-FCC COMPLIANT COMPONENTS

LOW VOLTAGE ENGINE DTC

(A27) FUSED B(+) CIRCUIT HIGH RESISTANCE

(Z905) GROUND CIRCUIT HIGH RESISTANCE

TIRE PRESSURE MONITORING (TPM) MODULE

Diagnostic Test

1. CHECK POWERTRAIN CONTROL MODULE (PCM) DTCs

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

1.	Ignition on, engine not running.

2.	With the scan tool, read PCM DTCs.

Are there any battery or charging systems DTCs?

Yes

(Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Diagnosis and Testing) and perform the appropriate diagnostic procedure.

Go To 2

2. VERIFY THE DTC IS ACTIVE

1.	With the scan tool, record and erase stored DTCs.

2.	Start the engine and run for two minutes.

3.	With the scan tool, read DTCs.

Is the DTC active at this time?

Yes

Go To 3

Go To 5

3. (A27) FUSED B(+) CIRCUIT OPEN OR HIGH RESISTANCE

1.	Turn the ignition off to the lock position

2.	Disconnect the TPM Module harness connector.

3.	Ignition on, engine not running.

4.	Using a 12-volt test light connected to ground, check (A27) Fused B(+) circuit in the TPM Module 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

Go To 4

Repair the (A27) Fused B(+) circuit for an open or high resistance.
Perform the TPM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Tire Pressure (TPM) - Standard Procedure).

4. (Z905) GROUND CIRCUIT OPEN OR HIGH RESISTANCE

1.	Turn the ignition off to the lock position

2.	Using a 12-volt test light connected to 12-volts, check the (Z905) Ground circuit in the TPM Module 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 Tire Pressure Monitoring (TPM) Module in accordance with Service Information. (Refer to 22 - Tires and Wheels/Tire Pressure Monitoring/MODULE, Tire Pressure Monitoring (TPM) - Removal).
Perform the TPM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Tire Pressure (TPM) - Standard Procedure).

Repair the (Z905) Ground circuit for an open or high resistance.
Perform the TPM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Tire Pressure (TPM) - Standard Procedure).

5. INTERMITTENT WIRING AND CONNECTORS

1.	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.

2.	Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.

3.	Look for the data to change or for the DTC to reset during the wiggle test.

4.	While monitoring the scan tool data relative to this circuit.

5.	Look for the data to change other than as expected or for the DTC to reset.

Were any problems found?

Yes

Repair as necessary.
Perform the TPM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Tire Pressure (TPM) - Standard Procedure).

The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.