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NHTSA ID Number: 10177501

Manufacturer Communication Number: S2008000075

TSB/Document Date: 2020-07-27


Summary

No Start, Start Stop Inoperative, Cluster Messages to Service Shifter or Service Start Stop System


STAR ONLINE PUBLICATION
Case Number: S2008000075
Release Date:

06/25/2020

Symptom/Vehicle Issue: No Start, Start Stop Inoperative, Cluster Messages to Service Shifter
or Service Start Stop System

Customer Complaint/ Technician Observation: Customer may observe A Service
Start/Stop message/Start Stop INOP or Service Shifter message and a no start condition. The
condition may have appeared after a recent jump starting of the vehicle contributed from a condition
of limited drive cycles not charging the Main and AUX batteries.
Technician observed: DTC P00FD BATTERY -B- STATE OF CHARGE PERFORMANCE
Auxiliary Battery Disconnected: During an initial key start, the Power Control Relay is
commanded on (open) and the Auxiliary Battery SOC is evaluated. If the Fused B+ voltage to
the Powertrain Control Module (PCM) is so low aprox 8.0 volts that the PCM experiences a
reset during the initial key-on or engine crank event, the PCM will set P00FD and ESS will be
disabled.
The diagnostic for the P00FD fault is basically designed to detect a discharging,
discharged or disconnected Auxiliary Battery any time there is a disconnect between the
two Batteries. It detects this if the Fused B+ voltage to the PCM drops low enough to cause a
PCM reset when disconnected from the Main/Cranking Battery. This fault will detect a faulty
Auxiliary Battery, or wiring issue between the Auxiliary Battery, PDC and Battery Supply circuit
and the PCM.

Repair Procedure:
Set Conditions:
The Powertrain Control Module (PCM) detects that the Auxiliary Battery is disconnected at
initial key crank event.
The PCM detects that the Auxiliary Battery voltage is below 7.98 volts during an ESS AutoStart event.
The PCM detects that the Auxiliary Battery voltage is below 10.30 volts during an ESS AutoStart event and the counter has reached 10 counts.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online does
not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear to be
similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.

Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
FCAeBay logo US LLC

Version 4.2 02/06/2017

STAR ONLINE PUBLICATION
Battery Testing:
When testing the auxiliary battery (if equipped), BOTH battery negative cables must be disconnected.
NOTE: If the vehicle is equipped with an Intelligent Battery Sensor (IBS), disconnect the IBS
connector first before disconnecting the negative battery cable.

Caution: When testing multiple batteries disconnect the auxiliary battery ground cable before
testing the main battery to avoid false battery test results. Main battery SOC can be viewed in the
BCM data. Verify the static battery SOC (State Of Charge) readings for the Primary battery,
document readings on repair order. Target BCM battery SOC for ESS should be greater than 65%.
Vehicles that have had recent limited driving miles or had to be jumped started may set DTC P00FD and may require additional battery charging to properly clear the DTC. Refer to service
diagnostics, battery charging tables to ensure properly charged batteries prior to further testing.
Vehicles that have DTC - P00FD reoccur, use the below DTC set list to further test and resolve.
Possible cause list to review for DTC’s that may return.
Possible Causes
OPEN FUSE IN BATTERY JUMP POST TERMINAL
PCR CONTROL RELAY OUTPUT CIRCUIT SHORTED TO VOLTAGE
POOR CONNECTION AT THE VEHICLE BATTERY POSITIVE OR NEGATIVE CABLE ENDS
HIGH RESISTANCE IN THE VEHICLE BATTERY POSITIVE CABLE
HIGH RESISTANCE IN THE VEHICLE BATTERY GROUND
HIGH RESISTANCE IN THE FUSED B+ CIRCUIT TO THE PCM
POWER CONTROL RELAY (PCR) STUCK ON (OPEN)
PCR CONTROL RELAY (ON PCB IN PDC) STUCK ON
FAULTY VEHICLE BATTERY

This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online does
not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear to be
similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.

Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
FCAeBay logo US LLC

Version 4.2 02/06/2017

1

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TSB/Document ID: S2008000075

Replacement Service Bulletin Number:

MFR Communication Date: 2020-06-25

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: POWER TRAIN

MFR Component System:

MFR Component Subsystem:


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