NHTSA ID Number: 10057983
Manufacturer Communication Number: PIC6076
TSB/Document Date: 2015-07-21
Summary
GENERAL MOTORS
2014-2015 CHEVROLET VOLT, CADILLAC ELR: UNABLE TO CHARGE HYBRID BATTERY WHEN "SERVICE HIGH VOLTAGE CHARGING SYSTEM" MESSAGE IS DISPLAYED ON THE DRIVERS INFORMATION CENTER. *LJ
SB-10057983-3206
File in Section:
Service Bulletin
Bulletin No.:
Date:
PIC6076
March, 2015
PRELIMINARY INFORMATION
Subject:
Service High Voltage Charging System Message with DTC P1EDD Or P1EDC
Models:
2014-2015 Chevrolet Volt
2014-2015 Cadillac ELR
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some customers may state that they are unable to charge the hybrid battery and the " Service High Voltage
Charging System " message is displayed on the Drivers Information Center. After inspection, you may notice that the
vehicle has a current or history code P1EDD Or P1EDC. These codes can be set falsely if the HPCM2 believes the
charging coupler has been disconnected and reconnected after a full battery charge.
Recommendation/Instructions
If you experience this concern, please use the following steps to help root cause the concern:
1. Ask the dealer technician to view the P1EDD or the P1EDC freeze frame data to confirm that the battery was full
at the time the DTC set ( > 83% State of Charge).
2. Confirm the vehicle will charge for 30 seconds using any EVSE (cord set).
3. Remove the charge port receptacle and inspect for cracking on the back side. An intermittent pilot signal could
simulate a plug/unplug cycle. In the HPCM2 Charge History Data, you can see if the “Multiple plug-in events
within 30 seconds” flag is TRUE for any of the recent charging events. Replace the charge port receptacle if
cracks are observed ( see photo below ) with the latest charge port receptacle ( See latest version of PI:
PIC6015A )
3685300
4. Update the K114B HPCM 2 with the latest software in TIS-2-Web
5. If the vehicle does not charge or does not meet any of the above criteria, follow published P1EDD or P1EDC
diagnostic procedure in Service Information.
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
2810265
Hybrid Powertrain Control Module 2
Reprogramming with SPS
Use Published Labor
Operation Time
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.
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TSB/Document ID: PIC6076
Replacement Service Bulletin Number:
MFR Communication Date: 2015-03-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
MFR Component System:
MFR Component Subsystem:
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