• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provides an overview of each diagnostic category.

For symptom byte information refer to Symptom Byte List

The battery saver mode (transport mode) reduces the parasitic load of some modules during overseas shipment or during vehicle storage conditions. This improves the drain time on the battery (up to 70 days without the battery going dead). When the vehicle is in transport/storage, some features may have reduced functionality while in the battery saver mode (transport mode), such as disabling the keyless entry or content theft features.

The battery saver mode (transport mode) incorporates a latching relay that when enabled disconnects some modules from their ignition power or memory power sources. Battery saver mode (transport mode) is initiated by turning on the hazard flashers and then turning the ignition key into the crank position or pushing the push button start switch (if equipped) for greater than 15 s. The mode is disengaged by repeating the previous process. After battery saver mode (transport mode) has been enabled, the body control module (BCM) may not send the command to unlatch the relay until after the ignition has been switched to the off position for up to 1 min. In battery saver mode (transport mode) the BCM will send a command to latch the relay for operation of those modules while the ignition is in the run position and then again unlatching the relay after the ignition is turned off. The driver information center (if equipped) will display Transport Mode is On when the transport mode is enabled and Transport Mode is Off when the transport mode is disabled. For vehicles not equipped with a driver information center, the battery indriver information centerator light will constantly flash on the instrument cluster when transport mode is enabled. This feature can be used as many times as necessary if the vehicle is to be stored for an extended period of time.

• The system voltage is between 9–16 V.
• The DTC can only run when the output is activated.

The BCM detects a short to ground in the battery saver relay set/reset circuits.

The module output driver will be shut down and not supply voltage to the battery saver relay set/reset circuits.

• The current DTC will clear when the module request for the output is removed or the malfunction is no longer present.
• A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.

• Body Control System Schematics
• Power Distribution Schematics

Master Electrical Component List

Power Mode Description and Operation

• Circuit Testing
• Connector Repairs
• Electrical Relay Replacement
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Control Module References for scan tool information

1. Enable battery saver mode (transport mode) in the vehicle.
2. Verify the KR104A Battery Saver Relay 1 clicks open and closed when cycling the ignition between ON and OFF.
• If the KR104A Battery Saver Relay 1 does not click open and closed

  Refer to Circuit/System Testing.

• If the KR104A Battery Saver Relay 1 clicks open and closed
3. All OK.

1. Ignition OFF and all vehicle systems OFF, disconnect the KR104A Battery Saver Relay 1. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 10 Ω between the ground circuit terminal 6 and ground.
• If 10 Ω or greater
1. Ignition OFF.
2. Test for less than 2 Ω in the ground circuit end to end.
• If 2 Ω or greater, repair the open/high resistance in the circuit.
• If less than 2 Ω, repair the open/high resistance in the ground connection.
• If less than 10 Ω
3. Ignition ON.
4. Verify a test lamp illuminates between the B+ circuit terminal 3 and ground.
• If the test lamp does not illuminate
1. Ignition OFF, remove test lamp, disconnect the harness connector at the T19 Power Supply Transformer.
2. Test for infinite resistance between the B+ circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance.
3. Test for less than 2 Ω in the B+ circuit end to end.
• If 2 Ω or greater, repair the open/high resistance in the circuit.
• If less than 2 Ω, replace the T19 Power Supply Transformer.
• If the test lamp illuminates
5. Enable battery saver mode (transport mode).
6. Ignition OFF.
7. Connect a test lamp between the control circuit terminal 1 and ground.
8. Verify the test lamp momentarily flashes ON and OFF when turning the ignition ON.
• If the test lamp is always OFF
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K9 Body Control Module.
2. Test for infinite resistance between the control circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 Ω  in the control circuit end to end.
• If 2 Ω  or greater, repair the open/high resistance in the circuit.
• If less than 2 Ω , replace the K9 Body Control Module.
• If the test lamp is always ON
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K9 Body Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the K9 Body Control Module.
• If the test lamp turns ON and OFF
9. Connect a test lamp between the control circuit terminal 2 and ground.
10. Verify the test lamp momentarily flashes ON and OFF after turning the ignition OFF.

Note: It may take up to 1 min after the ignition is switched OFF and retained accessory power is disabled before the K9 Body Control Module sends a command to unlatch the relay.

• If the test lamp is always OFF
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K9 Body Control Module.
2. Test for infinite resistance between the control circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 Ω  in the control circuit end to end.
• If 2 Ω  or greater, repair the open/high resistance in the circuit.
• If less than 2 Ω , replace the K9 Body Control Module.
• If the test lamp is always ON
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K9 Body Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the K9 Body Control Module.
• If the test lamp turns ON and OFF
11. Verify that a test lamp does not illuminate between the ignition circuit terminal 5 and ground.
• If the test lamp illuminates

  Repair the short to voltage on the ignition circuit

• If the test lamp does not illuminate
12. Ignition ON, connect a 30 A fused jumper wire between the B+ circuit terminal 3 and the ignition circuit terminal 5.
13. Verify the device is activated.
• If the device does not activate
1. Ignition OFF, disconnect the harness connector at the device.
2. Test for infinite resistance between the ignition circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 Ω in the ignition circuit end to end.
• If 2 Ω or greater, repair the open/high resistance in the circuit.
• If less than 2 Ω, replace the device.
• If the device activates
14. Test or replace the KR104A Battery Saver Relay 1.

1. Ignition OFF, disconnect the KR104A Battery Saver Relay 1.
2. Test for 70–150 Ω between terminals the following terminals.
• 1 and 6
• 2 and 6
• If less than 70 or greater than 150 Ω

  Replace the relay.

• If between 70–150 Ω
3. Install a 3 A fused jumper wire between relay terminal 1 and 12 V. Install a jumper wire between relay terminal 6 and ground.
4. Test for infinite resistance between the following terminals:
• 3 and 6
• 3 and 5
• 3 and 1
• 3 and 2
• 1 and 5
• 2 and 5
• If less than infinite resistance

  Replace the relay.

• If infinite resistance
5. Install a 3 A fused jumper wire between relay terminal 1 and 12 V. Install a jumper wire between relay terminal 6 and ground.
6. Test for less than 5.0 Ω between terminals 3 and 5.
• If 5.0 Ω or greater

  Replace the relay.

• If less than 5.0 Ω
7. All OK

Perform the Diagnostic Repair Verification after completing the repair.

• Control Module References for control module replacement, programming and setup.