P0561

P0561 - BATTERY SYSTEM VOLTAGE





When Monitored and Set Condition

- When Monitored: 180 seconds after the engine is started.
- Set Condition: The voltage supply at the Powertrain Control Module (PCM) is less than 8 volts or greater than 16.5 volts for at least 5 seconds.





Diagnostic Test

1. CHECK TO SEE IF BATTERY VOLTAGE DTC IS CURRENT





NOTE: Perform CHARGING SYSTEM - TESTING to verify the charging system is working properly before continuing.

NOTE: Check for any Technical Service Bulletins that may apply.

Turn the ignition on.

With the DRB III(R), erase PCM DTCs.

Turn the ignition off, then back on.

Monitor the DRB III(R) for this DTC.

With the DRB III(R), read PCM DTCs. If possible, operate the vehicle within the conditions that set the DTC.

Is the Battery System Voltage DTC present?

Yes

- Go To 2

a. No

- Go To 4

2. ENGINE CONTROL RELAY OUTPUT CIRCUIT OPEN





Turn the ignition off.

Disconnect PCM C5 harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.

Using a 12-volt test light connected to ground, probe the Fused Engine Control Relay Output circuit at the PCM C5 harness connector.

NOTE: The light should be bright. Compare to when connected across the battery.

Does the test light illuminate brightly?

Yes

- Go To 3

No

- Repair the Engine Control Relay Output circuit for an open.
- Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test - Ver 2

3. FUSED B(+) CIRCUIT OPEN





With the ignition on.

With the test light connected to a ground, probe the Fused B(+) circuit at PCM C5 harness connector.

NOTE: The light should be bright. Compare to when connected across the battery.

Does the test light illuminate brightly?

Yes

- Replace and program the Powertrain Control Module.
- Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test - Ver 2

No

- Repair the Fused B(+) circuit for an open.
- Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test - Ver 2

4. INTERMITTENT WIRING AND CONNECTORS

The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.

NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and/or open circuits.

NOTE: Check for any Technical Service Bulletins that may apply.

Were there any problems found?

Yes

- Repair as necessary.
- Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test - Ver 2

No

- The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.