Plug-In Charging Cadillac ELR I

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

Circuit/System Testing

WARNING

Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed. The High Voltage Disabling procedure includes the following steps: Identify how to disable high voltage. Identify how to test for the presence of high voltage. Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed. Before working on any high voltage system, be sure to wear the following Personal Protection Equipment: Safety glasses with appropriate side shields when within 15 meters (50 feet) of the vehicle, either indoors or outdoors. Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors. Visually and functionally inspect the gloves before use. Wear the Insulation gloves with leather protectors at all times when working with the high voltage battery assembly, whether the system is energized or not. Failure to follow the procedures may result in serious injury or death.

Vehicle OFF, disable the high voltage at the T18 Battery Charger. Refer to «High Voltage Disabling»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system) . Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
Test for infinite resistance between control pilot signal circuit terminal B of the X98 Hybrid/EV Battery Charger Receptacle and the terminals listed below: Terminal A Terminal C Terminal D Terminal E If less than infinite resistance Disconnect the harness connector from the X98 Hybrid/EV Battery Charger Receptacle. NOTE: This test is performed on the vehicle side of the harness connector. Test for infinite resistance between the harness connector control pilot signal circuit terminal B and the terminals listed below: Terminal A Terminal C Terminal D Terminal E If less than infinite resistance, repair the short between the circuits. If infinite resistance, replace the X98 Hybrid/EV Battery Charger Receptacle. If infinite resistance
Replace the K114B Hybrid/EV Powertrain Control Module 2.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

«Drive Motor Battery Charger Receptacle Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#plug-in-charging)
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for hybrid/EV powertrain control module 2 replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Control Pilot Signal	P0CF4, P0CF5, P0CF6, P0CF9, P0D01, 1	P0CF4, P0CF5, P0CF6, 1	P0CF4, P0CF5, P0CF6, P0CF9,1	P0CF4, P0CF5, P0CF6, 1
Proximity Signal	P0D58, 1	P0D59, 1	P0D59, 1
110/120 A/C Line 1	1	P0D3F, P1EE6	1
110/120 A/C Line 2	1	P1EE6	1
110/120 A/C Ground		P0D59, 1	1
1. Plug In Charging Malfunction

The hybrid/EV powertrain control module 2 has two internal switches used to modify the control pilot signal. The first internal switch modifies the control pilot signal to indicate to the drive motor battery charger cable that the vehicle is either ready or not ready to accept energy. The second internal switch modifies the control pilot signal to indicate to some drive motor battery charger cables (currently not used) if indoor ventilation is required.

The vehicle 12 V battery system voltage needs to be above 9 V.
The drive motor battery charger cable is disconnected and the charge port door is closed.
Vehicle in Service Mode.
The diagnostics for DTC P0CF4-P0CF6 must have passed before these will run.

The hybrid/EV powertrain control module 2 measures a pilot signal voltage out of range for 10 seconds. This is an internal circuit voltage in the hybrid/EV powertrain control module 2 and can not be measured.

DTC P0CF9 and P0D01 are type A DTCs
Disables the high voltage battery charging.

DTC P0CF9 and P0D01 are type A DTCs.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

Vehicle in Service Mode.
Verify that DTC P0CF9 or P0D01 is not set. If either of the DTCs are set Replace the K114B Hybrid/EV Powertrain Control Module 2. If none of the DTCs are set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for hybrid/EV powertrain control module 2 replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The hybrid/EV powertrain control module 2 monitors the date and time data it receives from the GPS satellite systems via the OnStar module. This time information is used to ensure the module's internal clock is synchronized to the customer's local time. The Time of Day Charging feature utilizes this internal clock to keep track of time and alarms for delayed charging modes. If this GPS time data is received during a drive cycle, the system is considered synchronized.

The vehicle needs to go from Vehicle OFF to Vehicle in Service Mode to start the diagnostic.

The vehicle is driven for more than 5 consecutive drive cycles where trip distance exceeds 15 Km (9.3 mi), and the date and time were unavailable from the OnStar Module.

DTC P0D1F is a type C DTC.
On the Navigation screen "Default Charge Mode: Immediately" is displayed.
The battery charger Time Of Day charging option is disabled, and charging mode is set to IMMEDIATE.

DTC P0D1F is a type C DTCs.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

Vehicle in Service Mode, verify no OnStar DTC's are set. If any OnStar DTC's are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) . If no OnStar DTC's are set
Verify the scan tool Telematics Communication Interface Control Module/Data Display/GPS Data/Second parameter is incrementing. If seconds are not incrementing Refer to «No Global Positioning System (GPS) Reception»(/cadillac/elr/i-2013-2015/remont/entertainment-systems/#cellular-system-entertainment-system-and-navigation-system) If seconds are incrementing
Replace the K114B Hybrid/EV Powertrain Control Module 2.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for hybrid/EV powertrain control module 2 replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The hybrid/EV powertrain control module 2 monitors the battery charger high voltage output and current output and ensures they are within the proper range. The battery charger operates in either a constant current mode or a constant voltage mode. Whichever mode you are in will determine which diagnostic will be ran. The battery charger runs constant voltage mode at the beginning and end of the charge cycle and runs constant current mode most of the charging cycle.

The hybrid/EV powertrain control module 2 and battery charger control module monitor the battery charger high voltage output and current output and ensures it is in the proper range and there is not a resistive short in the charging bus.

P0D21

Battery charger in heating mode ONLY
The vehicle 12 V battery system voltage is greater than 9 V. The battery charger is charging and is in constant current mode. Multi-function contactor must be commanded Open. Battery charging contactors must be commanded Closed. Commanded high voltage current must be greater than 0.5 A. High voltage battery heater duty cycle must be greater than 5 %. Drive motor battery charger cable must be connected and vehicle receiving power. DTC P0D4E, P0D4F, P0D53, P0D54, P1EEB, P1EEC, P1ECE, P0D5C, P16C5, P1EFD, or P1F16 is not set.

All other battery charging modes
The vehicle 12 V battery system voltage is greater than 9 V. The battery charger is charging and is in constant voltage mode or constant current mode. Multi-function contactor and battery charging contactors must be commanded Closed. Drive motor battery charger cable must be connected and vehicle receiving power. DTC P0D4E, P0D4F, P1EEB, P1EEC, P1ECE, P0D5C, P16C5, or P1EFD is not set.

P0D22

The vehicle 12 V battery system voltage is greater than 9 V.
The drive motor battery charger cable is connected and the Charge Mode is charging or is in Heating Only mode.
The hybrid/EV powertrain control module 2 measures a commanded current output of greater than 0.5 A.
The battery charging contactors are Closed.
The charger Turn On Delay Time has expired by greater than or equal to 5 s.
DTC P0D4E, P0D4F, P1EEB, P1EEC, P1ECE, P0D5C, P16C5, P1EFD, or P1F16 is not set.
The multi-function contactor must be commanded Closed.
High voltage battery heater duty cycle is greater than 99 %.

The vehicle 12 V battery system voltage is greater than 9 V.
The battery charger is enabled.
The hybrid/EV powertrain control module 2 measures a commanded voltage output of greater than 201 V.
The charger Turn On Delay Time has expired by greater than or equal to 6 s.

P0D23

The vehicle 12 V battery system voltage is greater than 9 V.
There can not be any high voltage or current sensor module faults present.
The battery charge system must be in the pre-charge state, and the multi-function contactor must be commanded Open.
There can not be any high voltage battery heating or cooling requests active.
The drive motor battery charger cable must be connected and vehicle receiving power.
DTC P0D53, P0D54, P1EEB, P1EEC, P1ECE, P0D5C, P16C5, P1EFD, or P1F16 is not set.

P0D21

Battery charger high voltage output voltage is less than 150 V.

Battery charger bus voltage divided by the expected charger bus voltage is less than 0.75 V.

P0D22

The hybrid/EV powertrain control module 2 measures that the battery charging bus current is not within an acceptable percentage of the commanded current.

P0D23

The battery charger high voltage output current is greater than 0.35 A.

DTC P0D22 and P0D23 are type A DTCs.
DTC P0D21 is a type B DTC.
Disables the vehicle high voltage battery charging.

DTC P0D22 and P0D23 are type A DTCs.
DTC P0D21 is a type B DTC.

Diagnostic Aids

With a DTC P0D21 set, the condition that caused the DTC may cause a blown charger fuse.
A blown charger fuse with a date code earlier than U38 may cause a DTC P0D21.
When charging during cold temperatures a DTC P0D22 may set. Verify if the latest calibration is installed before making repairs. Refer to preliminary information, PIP5077.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit
EL-50772 Insulation Multimeter

For equivalent regional tools, refer to Special Tools .

Vehicle in Service Mode, verify no other hybrid/EV battery-related DTCs are set. If any hybrid/EV battery-related DTCs are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for hybrid/EV battery diagnostics. If no hybrid/EV battery-related DTCs are set
Verify that DTC P0D20, P0D21, P0D22, and P0D23 is not set. If DTC P0D21 or P0D23 is set Refer to Circuit/System Testing. If DTC P0D22 is set NOTE: Refer to preliminary information, PIP5077 before programming the K114B Hybrid Powertrain Control Module 2. Verify that the K114B Hybrid/EV Powertrain Control Module 2 software is up to date. If the software is up to date, refer to Circuit/System Testing. If the software is not up to date Program the K114B Hybrid/EV Powertrain Control Module 2. Verify that DTC P0D22 does not reset. If DTC P0D22 is set, refer to Circuit/System Testing. If DTC P0D22 is not set All OK. If DTC P0D21, P0D22, or P0D23 is not set
All OK.

WARNING

Vehicle OFF, disable the high voltage at the T18 Battery Charger. Refer to «High Voltage Disabling»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system) . Disconnect the X5 connector at the A4 Hybrid/EV Battery Pack.
Test for less than 10 ohms between the 300 V circuit terminals listed below end to end: T18 Battery Charger terminal A X4 and A4 Hybrid/EV Battery Pack terminal A X5 T18 Battery Charger terminal B X4 and A4 Hybrid/EV Battery Pack terminal B X5 If 10 ohms or greater Verify that the charger maxi-fuse is not blown. Replace the charger maxi-fuse, if it is blown, and the 300 V DC cables. If less than 10 ohms
Reconnect the X4 connector at the T18 Battery Charger.
Using the EL-50772 Insulation Multimeter test for greater than 1M ohms between the circuit terminals listed below and ground: A4 Hybrid/EV Battery Pack terminal A +300 V X5 A4 Hybrid/EV Battery Pack terminal B -300 V X5 If less than 1M ohms Disconnect the X4 connector at the T18 Battery Charger. Using the EL-50772 Insulation Multimeter test the circuit for greater than 1M ohms between the circuit terminal and ground. If less than the specified range, Verify that the charger maxi-fuse is not blown. Replace the charger maxi-fuse, if it is blown, and the 300 V DC cables. If within the specified range, replace the T18 Battery Charger. If 1M ohms or greater
Test for greater than 1M ohms between the A4 Hybrid/EV Battery Pack terminal A and terminal B X5. If less than 1M ohms Disconnect the X4 connector at the T18 Battery Charger. Test for greater than 1M ohms between the A4 Hybrid/EV Battery Pack terminal A and terminal B X5. If less than the specified range, Verify that the charger maxi-fuse is not blown. Replace the charger maxi-fuse, if it is blown, and the 300 V DC cables. If within the specified range, Verify that the charger maxi-fuse is not blown. Replace the charger maxi-fuse, if it is blown, and the T18 Battery Charger. If 1M ohms or greater
Remove the maxi-fuse cover. Refer to «Battery Charger and 14 V Power Module Maxi Fuse Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system)
Verify that the charger maxi-fuse is not blown. The maxi-fuse is blown NOTE: The maxi-fuse date code defined as U38 is the 38th week of 2011. Verify the maxi-fuse date code. The maxi-fuse date code is before U38, refer to The Maxi-Fuse Date Code is Before U38. The maxi-fuse date code is U38 or later, refer to The Maxi-Fuse Date Code is U38 or Later. The maxi-fuse is not blown
Replace the T18 Battery Charger.
Verify that DTC P0D21, P0D22, or P0D23 does not set while operating the vehicle within the Conditions for Running the DTC. If any of the DTCs set Replace the K114B Hybrid/EV Powertrain Control Module 2. If none of the DTCs set
All OK.

The Maxi-Fuse Date Code is Before U38.

Replace both the 14 V Power Module and Charger maxi-fuses.
Verify that DTC P0D21, P0D22, or P0D23 does not set while operating the vehicle within the Conditions for Running the DTC. If any of the DTCs set Replace the K114B Hybrid/EV Powertrain Control Module 2. If none of the DTCs set
All OK.

The Maxi-Fuse Date Code is U38 or Later.

Replace the Charger maxi-fuse and the T18 Battery Charger.
Verify that DTC P0D21, P0D22, or P0D23 does not set while operating the vehicle within the Conditions for Running the DTC. If any of the DTCs set Replace the K114B Hybrid/EV Powertrain Control Module 2. If none of the DTCs set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«Battery Charger and 14 V Power Module Maxi Fuse Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system)
«Drive Motor Battery Charger Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#plug-in-charging)
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for hybrid/EV powertrain control module 2 replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Before connecting the battery charger to the hybrid/EV battery pack, it is necessary to raise the voltage level of the battery charger output to match the hybrid/EV battery pack voltage. This is called the precharge of the battery charger. During precharge, the charging contactors are closed, but the multi-function contactor is open. Also the drive motor battery charger cable needs to be plugged into the hybrid/EV battery charger receptacle and utility power needs to be enabled to the vehicle. The hybrid/EV powertrain control module 2 monitors the amount of time it takes to achieve the proper pre-charge voltage.

The vehicle 12 V battery system voltage needs to be above 9 V.
Battery charger must go from disconnected to connected.
Drive motor battery charger cable must be connected and vehicle receiving power.
The multi-function contactor must be commanded Open.

The hybrid/EV powertrain control module 2 determines the battery charger does not reach its pre-charge voltage within about 10 seconds.

DTC P0D26 is a Type A DTC.
Disables the high voltage battery charging.

DTC P0D26 is a Type A DTC.

The control pilot and proximity status circuits are susceptible to moisture intrusion, corrosion, and terminal damage. Extreme care must be taken when probing terminals and manipulating harnesses. Poor terminal connections can result in intermittent operation. Terminal damage or moisture intrusion may cause intermittent appearance of DTC P0D26.
If corrosion, moisture, or damage is detected on one connector, always be sure to inspect the mating connector as well.
If signs of moisture intrusion are observed in the hybrid/EV battery charger receptacle harness connector, such as moisture or corrosion, hybrid/EV battery charger receptacle should be replaced to avoid repeated failure.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Verify DTC P1EC5, P0D48, P0D59, P0CF4, P0CF5, P0CF6, or any other battery charger DTC is not set. If any of the DTCs are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) . If none of the DTCs are set
Verify DTC P0D26 is not set. If the DTC is set NOTE: Disabling the high voltage as directed is a critical part of this procedure. It will cycle 12 V battery power and wiring harness connections at the T18 Battery Charger. Vehicle OFF. Disable the high voltage system for servicing the T18 Battery Charger and X98 Hybrid/EV Battery Charger Receptacle. Refer to «High Voltage Disabling»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system) . Disconnect the vehicle wiring harness connector at the X98 Hybrid/EV Battery Charger Receptacle. Verify that the X98 Hybrid/EV Battery Charger Receptacle harness connector and the mating vehicle wiring harness connector terminals are free from moisture, corrosion, and damage. If any terminals show signs of moisture damage or intrusion, such as corrosion or moisture, replace the X98 Hybrid/EV Battery Charger Receptacle and repair the vehicle wiring harness as necessary. If any terminals or connectors show signs of physical damage, without signs of moisture intrusion, repair or replace as necessary. If no damage, moisture, or corrosion is found Connect the vehicle wiring harness connector at the X98 Hybrid/EV Battery Charger Receptacle. Enable the high voltage system. Refer to «High Voltage Enabling»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system) . Verify DTC P0D26 sets. If the DTC does not set, all OK. If the DTC sets Replace the X98 Hybrid/EV Battery Charger Receptacle. Verify DTC P0D26 does not set. If the DTC sets, replace the T18 Battery Charger. If the DTC does not set All OK. If the DTC is not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«Drive Motor Battery Charger Receptacle Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#plug-in-charging) for X98 Hybrid/EV Battery Charger Receptacle replacement.
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The hybrid/EV powertrain control module 2 monitors the battery charger AC current and verifies that it does not exceed its normal limit.

The vehicle 12 V battery system voltage needs to be above 9 V.
There cannot be any high voltage or current sensor faults present.
Drive motor battery charger cable must be connected and vehicle receiving power.

120 V AC Supply

Exceeds 13 A for about 3 seconds.

240 V AC Supply

Exceeds 17 A for about 3 seconds.

DTC P0D2A is a type A DTC.
Disables the high voltage battery charging.

DTC P0D2A is a type A DTC.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Verify DTC P0D2A is not set. If DTC is set Replace the T18 Battery Charger. If DTC is not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming, and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
Charge Pilot Indicator Control	P0D2B	P0D2B	P0D2B
Charge Status Indicator Control	P0D2C	P0D2C, 1	P0D2C
Charge Complete Indicator Control	1	1	1
Low Reference		P0D2C, P0D2B
1. Plug In Charging Indicator Malfunction

The status of charging events (including delays) is communicated to the user through a charge status indicator and audio tones . The battery state of charge indicator, located on the top middle of the instrument panel, will be solid lit green when the vehicle is charging under automatic control. It will have a fast flash green if the charging is delayed and will begin later. It will have a slow flash green when charging is complete. A solid lit yellow indicator means the vehicle is not able to accept a charge. And if there is no indicator lit it means the electronic vehicle supply equipment is not working properly or connected.

Both conditions need to run for diagnostic to pass.

Condition 1

The vehicle 12 V battery system voltage needs to be above 9 V.
Vehicle in Service Mode.
The drive motor battery charger cable is disconnected (LEDs commanded OFF).

Condition 2

The vehicle 12 V battery system voltage needs to be above 9 V.
Vehicle in Service Mode.
The vehicle is connected to an AC supply and the battery charger is charging the vehicle (LEDs commanded ON).

LED Commanded OFF, The hybrid/EV powertrain control module 2 detects a short to battery for about 4 seconds.
LED Commanded ON, The hybrid/EV powertrain control module 2 detects a short to ground or an open/high resistance for about 4 seconds.

DTC P0D2B and P0D2C are type B DTCs.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

WARNING

Vehicle OFF, disconnect the harness connector at the P36 Battery State Of Charge Indicator.
Test for less than 10 ohms between the low reference terminal C and ground. If 10 ohms or greater Repair the open/high resistance in the circuit. If less than 10 ohms
Connect a test lamp between the signal terminal A and ground.
Verify the test lamp does not illuminate. If the test lamp does illuminate Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2. Test for less than 1 V between the signal circuit terminal and ground. If 1 V or greater, repair the short to voltage in the circuit. If less than 1 V, replace the K114B Hybrid/EV Powertrain Control Module 2. If the test lamp does not illuminate
Connect the drive motor battery charger cable.
Verify that the test lamp illuminates within the first 5 seconds of connecting the drive motor battery charger cable. If the test lamp does not illuminate Disconnect the drive motor battery charger cable. Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2. Test for infinite resistance between the signal circuit and ground If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K114B Hybrid/EV Powertrain Control Module 2. If the test lamp does illuminate
Disconnect the drive motor battery charger cable for at least 10 seconds. Connect a test lamp between the signal terminal B and ground.
Verify the test lamp does not illuminate. If the test lamp does illuminate Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2. Test for less than 1 V between the signal circuit terminal and ground. If 1 V or greater, repair the short to voltage in the circuit. If less than 1 V, replace the K114B Hybrid/EV Powertrain Control Module 2. If the test lamp does not illuminate
Connect the drive motor battery charger cable.
Verify that the test lamp illuminates within 25 seconds of connecting the drive motor battery charger cable. If the test lamp does not illuminate Disconnect the drive motor battery charger cable. Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2. Test for infinite resistance between the signal circuit and ground If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K114B Hybrid/EV Powertrain Control Module 2. If the test lamp does illuminate
Replace the P36 Battery State Of Charge Indicator.

Perform the Diagnostic Repair Verification after completing the repair.

«Battery Charge Indicator Replacement»(/cadillac/elr/i-2013-2015/remont/gauges-instrument-panels/#instrument-panel-system-displays-and-gauges)
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for battery charger replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The battery charger will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the battery charger to the hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for DTC information.

The DTCs listed above for the battery charger are internal measurements that verify the charger is performing properly. The battery charger measures internal voltages, currents, and temperatures and verifies they are within the proper range.

These DTCs are internal faults of the battery charger. The vehicle needs to be connected to an AC supply and the battery charger is charging the vehicle.

These DTCs are internal faults of the battery charger.

DTC P0D39-P0D3B, P0D49, P0D4E, P0D4F, P0D53, P0D54, P1ECB-P1ECD, P1ED0-P1ED2, P1ED6-P1ED9, P1EDB, P1EDC, P1EDE-P1EE1, P1EE3, P1EE5, P1EE7-P1EED, P1EFE-P1F02, or P1F14-P1F16 are type A and B DTCs.
Disables high voltage battery charging.

DTC P0D39-P0D3B, P0D49, P0D4E, P0D4F, P0D53, P0D54, P1ECB-P1ECD, P1ED0-P1ED2, P1ED6-P1ED9, P1EDB, P1EDC, P1EDE-P1EE1, P1EE3, P1EE5, P1EE7-P1EED, P1EFE-P1F02, or P1F14-P1F16 are type A and B DTCs.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Verify that DTC P0D39-P0D3B, P0D49, P0D4E, P0D4F, P0D53, P0D54, P1ECB-P1ECD, P1ED0-P1ED2, P1ED6-P1ED9, P1EDB, P1EDC, P1EDE-P1EE1, P1EE3, P1EE5, P1EE7-P1EED, P1EFE-P1F02, or P1F14-P1F16 is not set. If any of the DTCs are set Replace the T18 Battery Charger. If none of the DTCs are set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming, and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The DTCs listed above for the battery charger are internal measurements that verify the charger is performing properly. The battery charger measures voltages, currents, and temperatures and verifies they are within the proper range.

The vehicle needs to be connected to an AC supply and the battery charger is charging the vehicle.

The battery charger detects low (less than 90V) or unstable supply voltage during charging.

DTC P0D3E and P0D3F are type A DTCs.
Disables high voltage battery charging.

DTC P0D3E and P0D3F are type A DTCs.

Charging the vehicle with a wet drive motor battery charger cable can cause this DTC to set. Verify that customer did not attempt to charge vehicle in the rain or extremely wet environment.

Low or unstable household voltage supply can cause this DTC to set. Verify with customer that household voltage was not fluctuating during charge attempt and that they are using a dedicated circuit with no extension cords.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

Clear DTC, connect the drive motor battery charger cable to vehicle and known good household supply voltage.
Vehicle ON.
Verify DTC P0D3E or P0D3F does not set. If none of the DTCs set Direct vehicle owner to verify proper connection of drive motor battery charger cable to their electrical supply and attempt charge again. If the vehicle will not charge, they will need electrical supply serviced. If any of the DTCs set
Verify drive motor battery charger cable LEDs are not flickering. If drive motor battery charger cable LEDs are flickering Replace drive motor battery charger cable. If drive motor battery charger cable LEDs are not flickering
Vehicle OFF, disconnect the drive motor battery charger cable from the vehicle.
Disconnect the X3 harness connector at the T18 Battery Charger.
Test for a short circuit on the AC circuits by testing for infinite resistance between the pairs listed below: T18 Battery Charger AC circuit terminals A X3 and B X3 T18 Battery Charger AC circuit terminals A X3 and C X3 T18 Battery Charger AC circuit terminals C X3 and B X3 T18 Battery Charger AC circuit terminal A X3 and ground T18 Battery Charger AC circuit terminal C X3 and ground If less than infinite resistance Disconnect harness connector at the X98 Hybrid/EV Battery Charger Receptacle. Test for a short circuit on the AC circuits by testing for infinite resistance between the appropriate pair listed below: T18 Battery Charger AC circuit terminals A X3 and B X3 T18 Battery Charger AC circuit terminals A X3 and C X3 T18 Battery Charger AC circuit terminals C X3 and B X3 T18 Battery Charger AC circuit terminal A X3 and ground T18 Battery Charger AC circuit terminal C X3 and ground If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the X98 Hybrid/EV Battery Charger Receptacle. If infinite resistance
Test for less than 2 ohms in the AC circuits end to end by measuring between the pairs listed below: T18 Battery Charger circuit terminal A X3 and X98 Hybrid/EV Battery Charger Receptacle terminal E T18 Battery Charger circuit terminal C X3 and X98 Hybrid/EV Battery Charger Receptacle terminal A If 2 ohms or greater Disconnect the harness connector at the X98 Hybrid/EV Battery Charger Receptacle. NOTE: This test is performed at the vehicle side of the harness connectors. Test for less than 2 ohms in the AC circuit end to end by measuring between the appropriate pair listed below: T18 Battery Charger circuit terminal A X3 and X98 Hybrid/EV Battery Charger Receptacle harness connector circuit terminal E T18 Battery Charger circuit terminal C X3 and X98 Hybrid/EV Battery Charger Receptacle harness connector circuit terminal A If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms , replace the X98 Hybrid/EV Battery Charger Receptacle. If less than 2 ohms
Replace the T18 Battery Charger.

Perform the Diagnostic Repair Verification after completing the repair.

«Drive Motor Battery Charger Receptacle Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#plug-in-charging) for X98 Hybrid/EV Battery Charger Receptacle replacement
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for T18 Battery Charger replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The battery charger, often referred to as the drive motor battery charger, contains several internal sensor diagnostics that require the vehicle AC supply to be in the proper range. These diagnostics are internal battery charger diagnostics, but need the correct AC voltage to run properly.

The vehicle 12 V battery system voltage is above 9 V.
The vehicle is connected to an AC supply.

P0D40

The vehicle AC supply is greater 422 V AC.

P1EDA and P1EDD

The battery charger internal bulk voltage is greater than about 464 V DC. This is a measurement internal to the battery charger.

P1F03

The battery charger detects internal PBIAS voltage is greater than about 15 V DC. This is a measurement internal to the battery charger.

DTC P0D40, P1EDA, P1EDD, and P1F03 are type A DTCs.
Disables the vehicle high voltage battery charging.

DTC P0D40, P1EDA, P1EDD, and P1F03 are type A DTCs.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Clear DTC, connect the drive motor battery charger cable to the vehicle and a known good household supply voltage.
Vehicle ON.
Verify DTC P0D40, P1EDA, P1EDD, or P1F03 does not set. If any of the DTCs set Replace the T18 Battery Charger. If none of the DTCs set
Direct the vehicle owner to verify proper connection of the drive motor battery charger cable to the electrical supply that caused the charging issue and attempt to charge again. If the vehicle will not charge, they will need the electrical supply serviced.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The battery charger takes internal measurements that verify the charger is performing properly. The battery charger measures internal voltages, currents, and temperatures and verifies they are within the proper range.

The vehicle needs to be connected to an AC supply and the battery charger is charging the vehicle.

The battery charger output voltage is outside expected range.

DTC P0D43-P0D44 are type A DTCs.
DTC P0D45 is a type B DTC.
Disables high voltage battery charging.

DTC P0D43-P0D44 are type A DTCs.
DTC P0D45 is a type B DTC.

External battery chargers can cause this DTC to set. Ensure customer did not have an external battery charger connected to vehicle during plug-in charging attempt.
In the case that a short to ground is found during Circuit/System Testing, it may be necessary to replace the associated fuse in the underhood fuse block.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

P0D43 or P0D44

Vehicle OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the X1 harness connector at the T18 Battery Charger.
Vehicle ON.
Test for greater than 12 V DC between the ignition circuit terminal A and ground. If less than 12 V Vehicle OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the X2 harness connector at the T18 Battery Charger. Test for infinite resistance between the B+ circuit terminal 2 and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the T18 Battery Charger. If 12 V or greater
Replace the T18 Battery Charger.

P0D45

Replace the T18 Battery Charger.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming, and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
AC Voltage Line 1	P1EE6	P1EE6
AC Voltage Line 2	P1EE6	P1EE6
AC Voltage Ground	1	P0D59	1
Control Pilot Signal	1	1	1
Proximity Signal	P0D58	P0D59	P0D59
1. Plug In Charging Indicator Malfunction

This diagnostic runs with the drive motor battery charger cable disconnected to verify the vehicle side circuit integrity. The hybrid/EV powertrain control module 2 uses a 5 V regulated signal through a 2700 ohms resistor to a low reference circuit in the battery charger to detect if the drive motor battery charger cable is attached.

The vehicle 12 V battery system voltage needs to be above 9 V.
The charge port door is closed.
Vehicle in Service Mode.
No charge port door DTCs are set. Or
The vehicle 12 V battery system voltage needs to be above 9 V.
The vehicle needs to be driven above 20 kph (15 mph) for more than 10 seconds.
No vehicle speed DTCs are set.

DTC P0D58

The hybrid/EV powertrain control module 2 measures a voltage less than 4.2 V for 1 second.

DTC P0D59

The hybrid/EV powertrain control module 2 measures a voltage greater than 4.8 V for 1 second.

DTC P0D58 and P0D59 are type A DTCs.
Disable the high voltage battery charging.

DTC P0D58 and P0D59 are type A DTCs.

Verify proper charge port door operation and diagnose any charge port door DTC prior to diagnosing DTC P0D58 or P0D59.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

WARNING

Vehicle OFF, disable the high voltage at the T18 Battery Charger. Refer to «High Voltage Disabling»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system) . Reconnect the X3 harness connector at the T18 Battery Charger.
Test for less than 10 ohms between the low reference circuit terminal C and ground. If 10 ohms or greater Disconnect the X3 harness connector at the T18 Battery Charger. Test for less than 2 ohms the low reference circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the T18 Battery Charger. If less than 10 ohms
Connect the 12 V battery. Vehicle in Service Mode.
Test for 4.2-4.8 V between the signal circuit terminal D and ground. If less than 4.2 V Vehicle OFF, disconnect the harness connector to the X98 Hybrid/EV Battery Charger Receptacle. Vehicle in Service Mode. NOTE: The following tests are performed at the harness connector to the X98 Hybrid/EV Battery Charger Receptacle. Test for 4.2-4.8 V between the signal circuit terminal D and ground. If less than 4.2 V Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2. Test for infinite resistance between the signal circuit terminal D and ground. If less than infinite resistance, repair the short to ground in the circuit. If infinite resistance Test for less than 2 ohms the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K114B Hybrid/EV Powertrain Control Module 2. If greater than 4.8 V Vehicle OFF, disconnect the X3 harness connector at the T18 Battery Charger. Disconnect the harness connector to the X98 Hybrid/EV Battery Charger Receptacle. Vehicle in Service Mode. NOTE: The following tests are performed at the harness connector to the X98 Hybrid/EV Battery Charger Receptacle. Test for 4.2-4.8 V between the signal circuit terminal D and ground. If greater than 4.8 V Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2. Test for less than 1 V between the signal circuit terminal and ground. If 1 V or greater, repair the short to voltage in the circuit. If less than 1 V Test for 2.565-2.835K ohms between the signal circuit terminal D and the low reference circuit terminal C. If not within the specified range, replace the X98 Hybrid/EV Battery Charger Receptacle. If within the specified range, replace the K114B Hybrid/EV Powertrain Control Module 2. If within 4.2-4.8 V
Replace the K114B Hybrid/EV Powertrain Control Module 2.

Perform the Diagnostic Repair Verification after completing the repair.

«Drive Motor Battery Charger Receptacle Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#plug-in-charging)
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for battery charger or hybrid/EV powertrain control module 2 replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

P0D5B, P0D5C, P1ECE, and P1EFD

The vehicle 12 V battery system voltage needs to be above 9 V.
The vehicle is connected to an AC supply and the battery charger is charging.
No out of range DTCs are present on any of the battery charger current or voltage sensors.

P1EFD

The battery charger needs to be charging at a minimum of 3 A high voltage DC current.

The battery charger calculates a power output not within the proper range for 2 seconds.

DTC P0D5B, P0D5C and P1ECE are type A DTCs.
DTC P1EFD is a type B DTC.
Disables the high voltage battery charging.

DTC P0D5B, P0D5C and P1ECE are type A DTCs.
DTC P1EFD is a type B DTC.

A possible cause of this DTC could be a faulty 14 V power module.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Verify no other battery charger DTCs are set. If any other battery charger DTCs are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) . If no other battery charger DTCs are set
Vehicle OFF. Wait 2 minutes for C1 Battery voltage to stabilize.
Test for 12.4-12.8 V between the C1 Battery terminals. If not within the specified range Refer to «Battery Inspection/Test»(/cadillac/elr/i-2013-2015/remont/body-electrical/#battery-charging-system-and-starting-system) . If within the specified range
Vehicle ON, accessories OFF.
Test the C1 Battery for at least 1 V greater than the voltage measured in step 3 but less than 15 V. If not within the specified range Refer to «DC Power Conversion Test»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-control-system) . If within the specified range
Replace the T18 Battery Charger.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming, and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The hybrid/EV battery energy control module will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the hybrid/EV battery energy control module to the hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code (DTC) information.

The hybrid/EV battery contains 5 high voltage contactors and 2 transistors. The high voltage contactors allow the high voltage DC batteries to be connected to the vehicle or safely contain the high voltage DC within the hybrid/EV battery assembly. The 5 high voltage contactors are a main positive high voltage contactor, main negative high voltage contactor, charge positive high voltage contactor, charge negative high voltage contactor, and multi-function high voltage contactor. The 2 transistors are the precharge transistor and heater transistor. These contactors/transistors close and open in sequence and are controlled by the hybrid/EV powertrain control module 2. The hybrid/EV powertrain control module 2 supplies voltage to the control circuit for the high voltage contactors/transistors. Ground is provided through the case ground.

P0D5E

The charger contactors are commanded open.
Runs once per charger contacts discharge event.
None of the following DTCs are set: P0D4E or P0D4F. OR
No confirmed charger bus discharge test pass or fail received by the hybrid/EV powertrain control module 2 from the battery charger control module.
This test runs every 10 seconds after charger discharge event if no confirmed charger bus discharge result is received by the hybrid/EV powertrain control module 2 from the battery charger control module.

P0D5E

High voltage bus does not discharge to below 60 V within 1.5 seconds of the charger contactors being commanded open. OR
With the charger contactors commanded open, current flowing to battery is greater than 2.5 A with the heater transistor enabled.

DTC P0D5E is a type A DTC.
All of the contactors will be prevented from closing.

DTC P0D5E is a type A DTC.
The «Clear Secured High Voltage DTCs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system__clear-secured-high-voltage-dtcs) reset function must be performed with a scan tool before clear codes.

The precharge time can be affected by the following

A long precharge time may be caused by a stuck closed hybrid/EV battery charger negative, hybrid/EV battery charger positive or hybrid/EV battery multifunction contactor.
A failure of the high impedance discharge circuit within the battery charger.

Schematic Reference

Hybrid/EV Energy Storage Schematics

Connector End View Reference

Drive Motor Battery System Description

Description and Operation

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.
OPEN the driver door using outside door handle. Leave driver door OPEN.
PRESS and HOLD the brake pedal.
Command the Hybrid/EV Battery Contactors ALL OPEN with a scan tool.
Disconnect the S15 Manual Service Disconnect.
Command the Battery Charging System Negative Contactor OPEN and CLOSED with a scan tool while listening for the contactor to open and close. The KR116A Battery Charging System Negative Contactor should be heard opening and closing. If the Battery Charging System Negative Contactor does not open and close Refer to Battery Charging System Negative Contactor. If the Battery Charging System Contactor does open and close
Command the Battery Charging System Positive Contactor CLOSED and ALL OPEN with a scan tool while listening for the contactor to close and open. The KR116B Battery Charging System Positive Contactor should be heard closing and opening. If the Battery Charging System Positive Contactor does not open and close Refer to Battery Charging System Positive Contactor Diagnosis. If the Battery Charging System Positive Contactor does open and close
Command the Hybrid/EV Battery Multifunction Contactor CLOSED and ALL OPEN with a scan tool while listening for the contactor to close and open. The KR117 Hybrid/EV Battery Multifunction Contactor should be heard opening and closing. If the Hybrid/EV Battery Multifunction Contactor does not open and close Refer to Hybrid/EV Battery Multifunction Contactor Diagnosis. If the Hybrid/EV Battery Multifunction Contactor does open and close
Replace the T18 Battery Charger.

WARNING

Battery Charging System Negative Contactor

Vehicle OFF, disconnect the X2 harness connector at the A4 Hybrid/EV Battery Pack.
Test for less than 10 ohms between the ground circuit terminal 5 and ground. If 10 ohms or greater Vehicle OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
Verify that a test lamp illuminates between each A4 Hybrid/EV Battery Pack harness connector terminals listed below and ground; B+ - Terminal 1 B+ - Terminal 9 If the test lamp does not illuminate for either circuit and the circuit fuse is good Vehicle OFF. Test for less than 2 ohms in the B+ circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse. If the test lamp does not illuminate for either circuit and the circuit fuse is open Vehicle OFF. 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, replace the K16 Battery Energy Control Module and A28 Hybrid/EV Battery Contactor Assembly. If the test lamp illuminates for both circuits
Vehicle OFF, disconnect the X1 harness connector at the A4 Hybrid/EV Battery Pack. Vehicle in Service Mode.
Verify that a test lamp does not illuminate between the A4 Hybrid/EV Battery Pack harness control circuit terminal 9 X1 and ground. If the test lamp illuminates Vehicle OFF, disconnect the X1 harness connector at the K114B Hybrid Powertrain Control Module 2. Vehicle in Service Mode. 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 K114B Hybrid Powertrain Control Module 2. If the test lamp does not illuminate
Vehicle OFF, disconnect the X1 harness connector at the K114B Hybrid Powertrain Control Module 2.
Test for infinite resistance between the A4 Hybrid/EV Battery Pack harness control circuit terminal 9 X1 and ground. If less than infinite resistance Repair the short to ground on the circuit. If infinite resistance
Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater Repair the open/high resistance in the circuit. If less than 2 ohms
Replace the K114B Hybrid Powertrain Control Module 2.
Verify that DTC P0D5E does not set while operating the vehicle within the Conditions for Running the DTC. If DTC P0D5E is set Replace the A28 Hybrid/EV Battery Contactor Assembly. If DTC P0D5E is not set
All OK.

Battery Charging System Positive Contactor

Vehicle OFF, disconnect the X2 harness connector at the A4 Hybrid/EV Battery Pack.
Test for less than 10 ohms between the ground circuit terminal 5 and ground. If 10 ohms or greater Vehicle OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
Verify that a test lamp illuminates between each A4 Hybrid/EV Battery Pack harness connector terminals listed below and ground; B+ - Terminal 1 B+ - Terminal 9 If the test lamp does not illuminate for either circuit and the circuit fuse is good Vehicle OFF. Test for less than 2 ohms in the B+ circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse. If the test lamp does not illuminate for either circuit and the circuit fuse is open Vehicle OFF. 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, replace the K16 Battery Energy Control Module and A28 Hybrid/EV Battery Contactor Assembly. If the test lamp illuminates for both circuits
Vehicle OFF, disconnect the X1 harness connector at the A4 Hybrid/EV Battery Pack. Vehicle in Service Mode.
Verify that a test lamp does not illuminate between the A4 Hybrid/EV Battery Pack harness control circuit terminal 7 X1 and ground. If the test lamp illuminates Vehicle OFF, disconnect the X1 harness connector at the K114B Hybrid Powertrain Control Module 2. Vehicle in Service Mode. 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 K114B Hybrid Powertrain Control Module 2. If the test lamp does not illuminate
Vehicle OFF, disconnect the X1 harness connector at the K114B Hybrid Powertrain Control Module 2.
Test for infinite resistance between the A4 Hybrid/EV Battery Pack harness control circuit terminal 7 X1 and ground. If less than infinite resistance Repair the short to ground on the circuit. If infinite resistance
Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater Repair the open/high resistance in the circuit. If less than 2 ohms
Replace the K114B Hybrid Powertrain Control Module 2.
Verify that DTC P0D5E does not set while operating the vehicle within the Conditions for Running the DTC. If DTC P0D5E is set Replace the A28 Hybrid/EV Battery Contactor Assembly. If DTC P0D5E is not set
All OK.

Hybrid/EV Battery Multifunction Contactor

Vehicle OFF, disconnect the X2 harness connector at the A4 Hybrid/EV Battery Pack.
Test for less than 10 ohms between the ground circuit terminal 5 and ground. If 10 ohms or greater Vehicle OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
Verify that a test lamp illuminates between each A4 Hybrid/EV Battery Pack harness connector terminals listed below and ground: B+ - Terminal 1 B+ - Terminal 9 If the test lamp does not illuminate for either circuit and the circuit fuse is good Vehicle OFF. Test for less than 2 ohms in the B+ circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse. If the test lamp does not illuminate for either circuit and the circuit fuse is open Vehicle OFF. 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, replace the K16 Battery Energy Control Module and A28 Hybrid/EV Battery Contactor Assembly. If the test lamp illuminates for both circuits
Vehicle OFF, disconnect the X1 harness connector at the A4 Hybrid/EV Battery Pack. Vehicle in Service Mode.
Verify that a test lamp does not illuminate between the A4 Hybrid/EV Battery Pack harness control circuit terminal 6 X1 and ground. If the test lamp illuminates Vehicle OFF, disconnect the X1 harness connector at the K114B Hybrid Powertrain Control Module 2. Vehicle in Service Mode. 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 K114B Hybrid Powertrain Control Module 2. If the test lamp does not illuminate
Vehicle OFF, disconnect the X1 harness connector at the K114B Hybrid Powertrain Control Module 2.
Test for infinite resistance between the A4 Hybrid/EV Battery Pack harness control circuit terminal 6 X1 and ground. If less than infinite resistance Repair the short to ground on the circuit. If infinite resistance
Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater Repair the open/high resistance in the circuit. If less than 2 ohms
Replace the K114B Hybrid Powertrain Control Module 2.
Verify that DTC P0D5E does not set while operating the vehicle within the Conditions for Running the DTC. If DTC P0D5E is set Replace the A28 Hybrid/EV Battery Contactor Assembly. If DTC P0D5E is not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«Drive Motor Battery Wire Junction Block Relay Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system)
«Drive Motor Battery Replacement and Shipping Preparation»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system__drive-motor-battery-replacement-and-shipping)
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for hybrid/EV powertrain control module 2 replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
AC Voltage Line 1	P1EE6	P1EE6
AC Voltage Line 2	P1EE6	P1EE6
AC Voltage Ground	1	P0D59	1
1. Plug In Charging Malfunction

The hybrid battery charger receptacle is connected to the battery charger through two 110/220 V AC circuits and one ground circuit. The battery charger receives serial data message from the hybrid powertrain control module 2 that the drive motor battery charger cable has been connected and then monitors the two 110/220 V AC circuits for proper voltage.

The vehicle 12 V battery system voltage needs to be above 9 V.
The drive motor battery charger cable is connected.
The diagnostics for P0D3E, P0D3F, P0D40, P0D5B, P0D5C, P16C4, P1ECE, P1EE7, P1EE8, P1EFD must have passed.

The battery Charger AC input Voltage is below 5 V.

DTC P1EE6 is a type A DTC.
Disables the vehicle high voltage battery charging.

DTC P1EE6 is a type A DTC.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

WARNING

Clear DTC, connect a known good drive motor battery charger cable to vehicle and household supply voltage.
Verify DTC P1EE6 is set. If DTC P1EE6 is not set Replace customer's drive motor battery charger cable. If DTC P1EE6 is set
Vehicle OFF, disable the high voltage at the T18 Battery Charger. Refer to «High Voltage Disabling»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system)
Test for infinite resistance between the 110/220 V AC circuit terminals listed below and ground: T18 Battery Charger terminal A X3 T18 Battery Charger terminal C X3 If less than infinite resistance Disconnect the harness connector to the X98 Hybrid/EV Battery Charger Receptacle. Test for infinite resistance between the 110/220 V AC circuit terminal and ground. If infinite resistance, repair the short to ground in the circuit. If less than infinite resistance, replace the X98 Hybrid/EV Battery Charger Receptacle. If infinite resistance
Test for infinite resistance between the 110/220 V AC circuit terminals listed below: T18 Battery Charger terminal A X3 T18 Battery Charger terminal B X3 T18 Battery Charger terminal C X3 If less than infinite resistance Disconnect the harness connector to the X98 Hybrid/EV Battery Charger Receptacle. Test for infinite resistance between the 110/220 V AC circuit terminals. If infinite resistance, repair the short between the circuits. If less than infinite resistance, replace the X98 Hybrid/EV Battery Charger Receptacle. If infinite resistance
Test for less than 10 ohms between the 110/220 V AC circuit terminals listed below: T18 Battery Charger terminal A X3 and X98 Hybrid/EV Battery Charger Receptacle E T18 Battery Charger terminal B X3 and X98 Hybrid/EV Battery Charger Receptacle C T18 Battery Charger terminal C X3 and X98 Hybrid/EV Battery Charger Receptacle A If 10 ohms or greater Disconnect the harness connector to the X98 Hybrid/EV Battery Charger Receptacle. Test for less than 2 ohms the 110/220 V AC circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the X98 Hybrid/EV Battery Charger Receptacle. If less than 10 ohms
Replace the T18 Battery Charger.

Perform the Diagnostic Repair Verification after completing the repair.

«Drive Motor Battery Charger Receptacle Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#plug-in-charging)
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for battery charger replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The battery charger, often referred to as the drive motor battery charger, 14 V output circuit is connected to the vehicle 12 V system. The battery charger monitors the 14 V output for proper current and voltage conditions. The battery charger has the ability to drive the voltage to 14 V.

The vehicle 12 V battery system voltage is above 9 V.
P0D44, P0D45, P0D49, P1EE9, or P1EEA should not be set.
The vehicle is connected to an AC supply and the battery charger is charging.

The battery charger actual 14 V output voltage or current is out of the allowable tolerance compared with the commanded output voltage or current. This is measured internal to the battery charger.

DTC P1EEF and P0D4A are type A DTCs.
Disables the high voltage battery charging.

DTC P1EEF and P0D4A are type A DTCs.

Connecting an external battery charger to vehicle while charging with drive motor battery charger cable can cause this DTC to set. Ensure customer did not have an external battery charger connected during plug-in charging attempt before proceeding with this diagnostic procedure

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Verify DTC P0D44, P0D45, P0D49, P1EE9, or P1EEA is not set. If any of the DTCs are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) . If none of the DTCs are set
Vehicle OFF. Wait 2 minutes for C1 Battery voltage to stabilize.
Test for 12.4-12.8 V between the C1 Battery terminals. If not within the specified range Refer to «Battery Inspection/Test»(/cadillac/elr/i-2013-2015/remont/body-electrical/#battery-charging-system-and-starting-system) . If within the specified range
Vehicle OFF, charger disconnected, all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the X2 harness connector at the T18 Battery Charger.
Test for less than 10 ohms between the ground circuit terminal 1 and ground. If 10 ohms or greater Repair the open/high resistance in the circuit. If less than 10 ohms
Verify a test lamp illuminates between the B+ circuit terminal 2 and ground. If the test lamp does not illuminate and the circuit fuse is good Test for less than 2 ohms in the B+ circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse. If the test lamp does not illuminate and the circuit fuse is open 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, replace the T18 Battery Charger. If the test lamp illuminates
Replace the T18 Battery Charger.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

P1EF0

P0D53, P0D54, P0D4E, P0D4F, P1EEB, or P1EEC should not be set.
The vehicle 12 V battery system voltage needs to be above 9 V
The vehicle is connected to a 120 V AC supply and the battery charger is converting power.

P1EF1

P0D53, P0D54, P0D4E, P0D4F, P1EEB, or P1EEC should not be set.
The vehicle 12 V battery system voltage needs to be above 9 V
The vehicle is connected to a 240 V AC supply and the battery charger is converting power.

P1EF0 or P1EF1

The battery charger actual high voltage output voltage or current is out of the allowable tolerance compared with the commanded output voltage or current. This is measured internal to the battery charger.

DTC P1EF0 and P1EF1 are type A DTCs

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

WARNING

Verify no battery-related DTCs are set. If any battery-related DTCs are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for hybrid battery diagnostics. If battery-related DTCs are not set
Clear DTC, connect the drive motor battery charger cable to vehicle and known good household supply voltage.
Verify DTC P1EF0 or P1EF1 is set. If none of the DTCs are set Vehicle owner will have to attempt charge at home again. If the vehicle will not charge they will need electrical supply serviced. If any of the DTCs are set
Vehicle OFF, disable the high voltage at the A4 Hybrid/EV Battery Pack and the T18 Battery Charger. Refer to «High Voltage Disabling»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system) .
Disconnect the X4 connector at the T18 Battery Charger and at the X5 connector at the A4 Hybrid/EV Battery Pack.
Test for infinite resistance between the 300 V circuit terminals listed below and ground: Terminal A X4 Terminal B X4 If less than the specified range Test the 300 V circuit for a short to ground. If within specified range
Test for less than 10 ohms between the 300 V circuit terminals listed below: T18 Battery Charger terminal A X4 and A4 Hybrid/EV Battery Pack A X5 T18 Battery Charger terminal B X4 and A4 Hybrid/EV Battery Pack B X5 If greater than the specified range Test the 300 V circuit for an open/high resistance. If within specified range
Test for infinite resistance between the 300 V circuit terminal A X4 and B X4. If less than the specified range Test the 300 V circuits for a short between the circuits. If all circuits tests normal
Replace the T18 Battery Charger.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming, and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The battery charger, often referred to as the drive motor battery charger, uses a liquid cooled cooling system which is cooled from the front of the vehicle. The hybrid electronic cooling system needs to be functioning properly for the battery charger to be able to meet its temperature requirements.

The hybrid/EV powertrain control module 2 monitors the battery charger temperature and verifies it is within its proper operating range. There is a temperature sensor that measures the overall temperature of the battery charger. Also, there are battery charger internal temperatures sensors that monitor for over temperature conditions that are for the voltage converter 1, voltage converter 2, and the voltage conditioner within the battery charger.

The vehicle 12 V battery system voltage is above 9 V.
The vehicle is connected to an AC supply and battery charger is charging.

The battery charger voltage converter 1, voltage converter 2, or voltage conditioner temperature sensor measures a temperature greater than 100°C (212°F).

DTCs P1EF3-P1EF5 are type A DTCs.
Disables the vehicle high voltage battery charging.

DTC P1EF3-P1EF5 are type A DTCs.
The battery charger voltage converter 1, voltage converter 2, or voltage conditioner temperature sensors measure a temperature of 90°C (194°F) or less.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Verify that no hybrid electronics coolant system DTC is set. If DTC is set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) If DTC is not set
Verify the hybrid/EV electronics cooling system is functioning properly. Refer to «Hybrid/EV Electronics Cooling Diagnostic»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-battery-heating-and-cooling-system__hybridev-electronics-cooling-diagnostic) . If the hybrid/EV electronics cooling system is not functioning properly Repair the fault. If the hybrid/EV electronics cooling system is functioning properly
Replace the T18 Battery Charger.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger, often referred to as the Drive Motor Battery Charger, replacement, programming, and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The hybrid/EV powertrain control module 2 monitors the battery charger high voltage output and current output and ensures they are within the proper range. The battery charger operates in either a constant current mode or a constant voltage mode. Whichever mode you are in will determine which diagnostic will be run. The battery charger runs constant voltage mode at the beginning and end of the charge cycle and runs constant current mode most of the charging cycle.

P1EFA

The vehicle 12 V battery system voltage needs to be above 9 V.
The vehicle is connected to an 120 V AC supply and battery charging is charging the high voltage battery supply.

P1EFB

The vehicle 12 V battery system voltage needs to be above 9 V.
The vehicle is connected to a 240 V AC supply and battery charging is charging the high voltage battery supply.

P1EFA, P1EFB

The battery charger detects an internal over current condition. This is an internal measurement to the battery charger.

DTC P1EFA and P1EFB are type C DTCs.
Disables the vehicle high voltage battery charging.

DTC P1EFA and P1EFB are type C DTCs.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

WARNING

Verify no other battery-related DTCs are set. If any battery-related DTCs are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for hybrid battery diagnostics. If no other battery-related DTCs are set
Vehicle OFF, disable the high voltage at the A4 Hybrid/EV Battery Pack and the T18 Battery Charger. Refer to «High Voltage Disabling»(/cadillac/elr/i-2013-2015/remont/body-electrical/#hybridev-energy-storage-system) .
Disconnect the X4 connector at the T18 Battery Charger and the X5 connector at the A4 Hybrid/EV Battery Pack.
Test for infinite resistance between the 300 V circuit terminals listed below and ground: Terminal A X4 Terminal B X4 If less than the specified range Test the 300 V circuit for a short to ground. If within specified range
Test for less than 10 ohms between the 300 V circuit terminals listed below: T18 Battery Charger terminal A X4 and A4 Hybrid/EV Battery Pack A X5 T18 Battery Charger terminal B X4 and A4 Hybrid/EV Battery Pack B X5 If greater than the specified range Test the 300 V circuit for an open/high resistance. If within specified range
Test for infinite resistance between the 300 V circuit terminal A X4 and B X4. If less than the specified range Test the 300 V circuits for a short between the circuits. If all circuits tests normal
Replace the T18 Battery Charger. Refer to «Drive Motor Battery Charger Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#plug-in-charging) .

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for T18 Battery Charger replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Control Pilot Signal	P0CF4, P0CF5, P0CF6, P0CF9, P0D01, 1	P0CF4, P0CF5, P0CF6, 1	P0CF4, P0CF5, P0CF6, P0CF9,1	P0CF4, P0CF5, P0CF6, 1
Proximity Signal	P0D58, 1	P0D59, 1	P0D59, 1
110/120 A/C Line 1	1	P0D3F, P1EE6	1
110/120 A/C Line 2	1	P1EE6	1
110/120 A/C Ground		P0D59, 1	1
1. Plug In Charging Malfunction

The drive motor battery charger cable allows the vehicle to be charged using a common household power outlet. The drive motor battery charger cable contains LEDs that indicate the status of the drive motor battery charger cable. The drive motor battery charger cable automatically prohibits voltage transfer to the hybrid/EV battery charger receptacle and illuminates the indicator LEDs red if it senses internal faults or inadequate household voltage. If the drive motor battery charger cable senses no faults, voltage transfer to the hybrid/EV battery charger receptacle occurs and the indicator LEDs are illuminated green. Charging continues until Hybrid/EV Battery Pack State of Charge reaches 86% at which point the green indicator will flash slowly, indicating charging is complete.

The drive motor battery charger cable that displays flashing red status LEDs before plugging into the vehicle will need to be diagnosed first. The vehicle will not cause charging malfunction with flashing red status LEDs and the drive motor battery charger cable disconnected.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/cadillac/elr/i-2013-2015/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-48900 HEV Safety Kit

For equivalent regional tools, refer to Special Tools .

Vehicle in Service Mode, verify no additional DTCs are set in other control modules. If additional DTCs are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) . If no additional DTCs are set
Vehicle OFF and connect the charge cord.
Verify the charge indicator is operating properly. If the charge indicator is flashing yellow Refer to Flashing Yellow Indicator. If the charge indicator is solid yellow Refer to Charging Malfunction. If the charge indicator is operating properly
All OK.

WARNING

Charging Malfunction

Connect drive motor battery charger cable to household power outlet, but not the battery charger receptacle.
After 25 seconds, verify drive motor battery charger cable LEDs illuminate solid green. If drive motor battery charger cable LEDs do not illuminate solid green Connect a known good drive motor battery charger cable to the same household power outlet. If known good drive motor battery charger cable LEDs illuminate solid green, have the service provider check for high frequency noise on the dedicated home outlet. If no high frequency noise is found, replace drive motor battery charger cable. If known good drive motor battery charger cable LEDs do not illuminate solid green, have the service provider inspect the household power outlet for insufficient voltage, high frequency noise, or open/high resistance. If drive motor battery charger cable LEDs do illuminate solid green
Test for B+ between the low voltage circuits listed below on drive motor battery charger cable. Proximity status signal circuit terminal D Control pilot signal circuit terminal B If not B+ Replace drive motor battery charger cable. If B+
Vehicle OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for 100k ohms-4M ohms between the control pilot signal terminal B at the X98 Hybrid/EV Battery Charger Receptacle and ground. If 4M ohms or greater Disconnect the X2 harness connector from K114B Hybrid/EV Powertrain Control Module 2 Test for 2 ohms in the control pilot signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K114B Hybrid/EV Powertrain Control Module 2. If less than 100k ohms Disconnect the X2 harness connector from K114B Hybrid/EV Powertrain Control Module 2 Test for infinite resistance between the control pilot signal circuit and ground. If less than infinite resistance, repair the short to ground in the circuit. If infinite resistance, replace the K114B Hybrid/EV Powertrain Control Module 2. If within the specified range
Test for less than 1 V between the control pilot signal terminal B at the X98 Hybrid/EV Battery Charger Receptacle and ground. If greater than 1 V Disconnect the X2 harness connector from K114B Hybrid/EV Powertrain Control Module 2 Test for less than 1 V between the control pilot signal circuit and ground. If greater than 1 V, repair the short to voltage in the circuit. If less than 1 V, replace the K114B Hybrid/EV Powertrain Control Module 2. If less than 1 V
Vehicle in Service Mode.
Test for 4.2-4.8 V between the proximity status signal terminal D at the X98 Hybrid/EV Battery Charger Receptacle and ground. If less than 4.2 V Vehicle OFF, test for infinite resistance between the proximity status signal circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Disconnect the X2 harness connector from K114B Hybrid/EV Powertrain Control Module 2. Test for less than 2 ohms in the proximity status signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K114B Hybrid/EV Powertrain Control Module 2. If greater than 4.8 V Disconnect the X2 harness connector from K114B Hybrid/EV Powertrain Control Module 2 Test for 0 V between the proximity status signal circuit and ground. If greater than 0 V, repair the short to voltage in the circuit. If 0 V, replace the K114B Hybrid/EV Powertrain Control Module 2. If within the specified range
Vehicle OFF, disconnect the X3 harness connector from T18 Battery Charger.
Test for infinite resistance between the terminals listed below at the X98 Hybrid/EV Battery Charger Receptacle: 110/220 V A/C Line 1 terminal E and 110/220 V A/C Neutral Line 2 terminal A 110/220 V A/C Line 1 terminal E and 110/220 V A/C Ground terminal C 110/220 V A/C Line 1 terminal E and Control pilot signal circuit terminal B 110/220 V A/C Line 1 terminal E and Proximity status signal circuit terminal D 110/220 V A/C Neutral Line 2 terminal A and 110/220 V A/C Ground terminal C 110/220 V A/C Neutral Line 2 terminal A and Control pilot signal circuit terminal B 110/220 V A/C Neutral Line 2 terminal A and Proximity status signal circuit terminal D 110/220 V A/C Ground terminal C and Control pilot signal circuit terminal B Control pilot signal circuit terminal B and Proximity status signal circuit terminal D If less than infinite resistance Repair the short between the circuits. If infinite resistance
Disconnect the harness connector from the X98 Hybrid/EV Battery Charger Receptacle.
Test for 2.56-2.84k ohms between the 110/220 V A/C Ground terminal C and Proximity status signal circuit terminal D at the X98 Hybrid/EV Battery Charger Receptacle. If not within the specified range Replace the X98 Hybrid/EV Battery Charger Receptacle. If within the specified range
Test for infinite resistance between the 110/220 V A/C Ground terminal C and Proximity status signal circuit terminal D of the harness connector. If less than infinite resistance Repair the short between the circuits. If infinite resistance
Replace the T18 Battery Charger.

Flashing Yellow Indicator

Scheme 44

Vehicle OFF, disconnect the X3 harness connector from T18 Battery Charger.
Test for infinite resistance between the terminals listed below at the X98 Hybrid/EV Battery Charger Receptacle: 110/220 V A/C Line 1 terminal E and 110/220 V A/C Neutral Line 2 terminal A 110/220 V A/C Line 1 terminal E and 110/220 V A/C Ground terminal C 110/220 V A/C Line 1 terminal E and Control pilot signal circuit terminal B 110/220 V A/C Line 1 terminal E and Proximity status signal circuit terminal D 110/220 V A/C Neutral Line 2 terminal A and 110/220 V A/C Ground terminal C 110/220 V A/C Neutral Line 2 terminal A and Control pilot signal circuit terminal B 110/220 V A/C Neutral Line 2 terminal A and Proximity status signal circuit terminal D 110/220 V A/C Ground terminal C and Control pilot signal circuit terminal B Control pilot signal circuit terminal B and Proximity status signal circuit terminal D If less than infinite resistance Disconnect the harness connector from the X98 Hybrid/EV Battery Charger Receptacle. Test for infinite resistance between the terminals listed below at the X98 Hybrid/EV Battery Charger Receptacle: 110/220 V A/C Line 1 terminal E and 110/220 V A/C Neutral Line 2 terminal A 110/220 V A/C Line 1 terminal E and 110/220 V A/C Ground terminal C 110/220 V A/C Line 1 terminal E and Control pilot signal circuit terminal B 110/220 V A/C Line 1 terminal E and Proximity status signal circuit terminal D 110/220 V A/C Neutral Line 2 terminal A and 110/220 V A/C Ground terminal C 110/220 V A/C Neutral Line 2 terminal A and Control pilot signal circuit terminal B 110/220 V A/C Neutral Line 2 terminal A and Proximity status signal circuit terminal D 110/220 V A/C Ground terminal C and Control pilot signal circuit terminal B Control pilot signal circuit terminal B and Proximity status signal circuit terminal D If less than infinite resistance, replace the X98 Hybrid/EV Battery Charger Receptacle and K114B Hybrid/EV Powertrain Control Module 2. If infinite resistance Disconnect the X2 harness connector from K114B Hybrid/EV Powertrain Control Module 2 Test for infinite resistance between the circuits. If less than infinite resistance, repair the short between the circuits. If infinite resistance, replace the K114B Hybrid/EV Powertrain Control Module 2. If infinite resistance
Replace the K114B Hybrid/EV Powertrain Control Module 2.

Perform the Diagnostic Repair Verification after completing the repair.

«Drive Motor Battery Charger Receptacle Replacement»(/cadillac/elr/i-2013-2015/remont/body-electrical/#plug-in-charging)
«Control Module References»(/cadillac/elr/i-2013-2015/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for battery charger, or hybrid/EV powertrain control module 2 replacement, programming and setup.

Perform the «Diagnostic System Check - Vehicle»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
Charge Pilot Indicator Control	P0D2B	P0D2B	P0D2B
Charge Status Indicator Control	P0D2C	P0D2C, 1	P0D2C
Charge Complete Indicator Control	1	1	1
Low Reference		P0D2C, P0D2B
1. Plug In Charging Indicator Malfunction

The status of charging events (including delays) is communicated to the user through a charge status indicator and audio tones . The vehicle charge status indicator, located on the top middle of the instrument panel, contains a green LED (charge status indicator) and yellow LED (charge pilot indicator) controlled by the Hybrid Powertrain Control Module 2 and a second green LED (charge complete indicator) controlled by the BCM. The indicator will be illuminated solid green when the vehicle is charging under automatic control. It will have a fast flash green if the charging is delayed and will begin later. It will have a slow flash green when charging is complete. A solid lit yellow indicator means the vehicle is not able to accept a charge. And if there is no indicator lit it means the electronic vehicle supply equipment is not working properly or connected.

Schematic Reference

Connector End View Reference

Description and Operation