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PEPS (Passive Entry Passive Start)
The Passive Entry Passive Start subsystem provides enhanced customer convenience and
security via a customer carried, passively enabled User Identification Device (UID). A valid
UID allows access to the vehicle’s passenger compartment, access to the vehicle’s cargo
compartment, and use of the vehicle’s start / ignition interface.
Block diagram PEPS
UID
Outside antenna
Locksensor
Unlatch
Motor
Unlatch
Motor
Unlatch
Motor
RFA
BCM
GM LAN
Interior antenna
PEPS
Bumper antenna
Interior antenna
ESCL
Trunk antenna
Start Stop switch.
Unlatch
Motor
Outside antenna
Locksensor
Unlatch
Motor
In Low Level variant, only the interior antennas will be utilized. See description starting on
the next page for further information.
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Functional description PEPS
The PEPS subsystem is responsible for authenticating the vehicle user through
communication between the vehicle and the UID. Proper authentication in the presence of
other customer inputs will then allow the user to control access to the vehicle as well as
provide authorization to the Vehicle State Manager and Vehicle Theft Deterrent subsystems
to control vehicle operation.
There are two versions of PEPS:
1. Low Level PEPS
Ö provides “Passive Start”
2. High Level PEPS
Ö provides “Passive Entry” and “Passive Start”
Powermoding
The figure below shows the User Interface Device (UID) authentication communication
between the PMM and PEPS modules. This is needed to prevent unauthorized Power Moding
changes upward from PM=OFF to ACC, RUN or CRANK REQUEST without a valid UID. It also
is used to signal an absence of a valid UID. The PMM will send a serial data request to PEPS
requesting UID authentication when needed.
Power Mode = Off
Push Button Switch
Pressed
PMM
Push Button Switch
Pressed
Push Button Switch
Report to BCM
PEPS
Function
UID Status Valid/InValid
NO
Valid
Match
UID
END
YES and ACC or RUN
Power Mode Desired
Change Power
Mode To ACC or
RUN
Note: Need Valid
UID to Change
from ACC to Run
Power Mode
YES and Crank
Power Mode
Desired
NO or ESCL
Unlock
Timeout
Expired
ESCL
ESCL==
Unlocked
Unlocked
Crank Power
Mode Desired
& Valid UID
Stay In Current
Power Mode
YES or ESCL Present = False
Change Power
Mode To Crank
END
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Open & Start Operation
Open the car:
UID is in Outside Detection Area and one
door handle or trunk lid is pulled (anyone !)
Ö Car unlocks
Note:
Car can be un-locked and locked as well
from further distance by pressing buttons on
UID (Remote function)
Operate the car:
UID is in Inside Detection Area, Clutch pedal
and/or brake engaged (Automatic in “P”)
and Start/Stop Button is pressed
Ö Engine starts
Engine is running and Start/Stop Button is
pressed
Ö Engine stops
Close the car:
UID is in Outside Detection Area and Lock
sensor on driver or co-driver handle is
pushed
Ö Car locks
Note:
Car can be un-locked and locked as
well from further distance by pressing
buttons on UID (Remote function)
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Connectors and pin assignment PEPS
1
X1
11
1
X2
5
1
X3*
6
1
X4*
11
Cavity
Circuit #
* only available in High Level PEPS
X1-01
X1-02
X1-03
X1-04
X1-05
X1-06
X1-07
X1-08
X1-09
X1-10
X1-11
X1-12
X1-13
X1-14
X1-15
1601
5060
5060
126
1177
5724
1798
6649
Circuit Description
ESCL (Steering Column Lock Signal)
n.c.
Low Speed GMLAN1 Serial Data
Low Speed GMLAN2 Serial Data
n.c.
Spare_HA1
Spare_LA2
Spare_LA1
Driver_Door_Open (Left Front Door Open Switch Signal)
Co_Driver_Door_Open (Right Front Door Open Switch Signal)
Start_Stop_Switch (Ignition Mode Switch Mode Control)
Start_Stop_Reference
n.c.
n.c.
Interior Antenna2 Lo (Keyless Antenna Low Reference (7))
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X1-16
X1-17
X1-18
X1-19
X1-20
X2-01
X2-02
X2-03
X2-04
X2-05
X2-06
X3-01
X3-02
X3-03
X3-04
X3-05
X3-06
X3-07
X3-08
X3-09
X3-10
X4-01
X4-02
X4-03
X4-04
X4-05
X4-06
X4-07
X4-08
X4-09
X4-10
X4-11
X4-12
X4-13
X4-14
X4-15
X4-16
X4-17
X4-18
X4-19
X4-20
6645
6652
6647
6648
6646
1140
A51
4
3
A40
1050
6129
6670
6672
6673
6671
6128
6669
6667
6668
6666
6658
6656
694
7576
244
218
219
5713
5711
5712
6657
6655
195
780
5710
5709
5714
5708
5707
Interior Antenna1 Hi (Keyless Antenna Signal (6))
Interior Antenna1 Lo (Keyless Antenna Low Reference (6))
Interior Antenna3 Hi (Keyless Antenna Signal (8))
Interior Antenna3 Lo (Keyless Antenna Low Reference (8))
Interior Antenna2 Hi (Keyless Antenna Signal (7))
VBatt1 (Battery Positive Voltage)
Gnd1
Accessory
Run_Crank
VBatt2 (Battery Positive Voltage)
Gnd2
Rear_Closure_Unlatch_Hi (Rear Closure Unlatch Motor Latch Control) NOT USED
Right_Rear_Door_Unlatch_Hi (Right Rear Door Unlatch Motor Latch Control)
Left_Rear_Door_Unlatch_Hi (Left Rear Door Unlatch Motor Latch Control)
Co Driver_Door_Unlatch_Hi (Passenger Door Unlatch Motor Latch Control)
Driver_Door_Unlatch_Hi (Driver Door Unlatch Motor Latch Control)
Rear_Closure_Unlatch_Lo (Rear Closure Unlatch Motor Unlatch Control) NOT USED
Right_Rear_Door_Unlatch Lo (Right Rear Door Unlatch Motor Unlatch Control)
Left_Rear_Door_Unlatch Lo (Left Rear Door Unlatch Motor Unlatch Control)
Co_Driver_Door_Unlatch_Lo (Passenger Door Unlatch Motor Unlatch Control)
Driver_Door_Unlatch_Lo (Driver Door Unlatch Motor Unlatch Control)
Right_Rear_Door_Handle_Switch (Right Rear Door Unlatch Switch Signal)
Left_Rear_Door_Handle_Switch (Left Rear Door Unlatch Switch Signal)
Driver_Door_Unlatch_Enable (Driver Door Unlatch Switch Signal)
Rear_Closure_Lock_Switch (Rear Passenger Door Lock Switch Lock Signal)
Co_Driver_Door_Lock_Switch (Passenger Door Lock Switch Lock Control )
Antenna_Driver_Door_Hi (Keyless Entry Antenna Signal (1))
Antenna_Driver_Door_Lo (Keyless Entry Antenna Low Reference (1))
Antenna_Right_Rear_Lo (Keyless Entry Antenna Low Reference (4))
Antenna_Co_Driver_Door_Lo (Keyless Entry Antenna Low Reference (2))
Antenna_Left_Rear_Lo (Keyless Entry Antenna Low Reference (3))
Co_Driver_Door_Handle_Switch (Passenger Door Unlatch Switch Signal)
Driver_Door_Handle_Switch (Driver Door Unlatch Switch Signal)
n.c.
Non_Driver_Door_Unlatch_Enable (Door Lock Control)
Driver_Door_Lock_Switch (Driver Door Lock Switch Lock Signal)
Ant_Rear_Closure_Hi (Keyless Entry Antenna Signal (5))
Antenna_Right_Rear_Hi (Keyless Entry Antenna Signal (4))
Ant_Rear_Closure_Lo (Keyless Entry Antenna Low Reference (5))
Antenna_Left_Rear_Hi (Keyless Entry Antenna Signal (3))
Antenna_Co_Driver_Door_Hi (Keyless Entry Antenna Signal (2))
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PTM (Power Tailgate Module, only for 651 Wagon)
The Power Tailgate Module’s main function is controlling the latch of the tailgate and
reading the opening angle. As an option, PTM may be used to hydraulically open and close
the tailgate.
Block diagram PTM
Battery
PTM
GMLAN in
-
GMLAN out
Power
Tailgate
Switch
Outside handle
Switch
Shut face (Close)
Module
Gate Open
Gate Close
Open / Release
Switch
Gate Ajar
Motor
Latch
Close / Cinch
Obstacle Sensor
GND
Functional description PTM
The Power Tailgate Module is available in two options:
• manual tailgate
• hydraulically powered tailgate
If a manual tailgate is desired, PTM is assembled because of its ability to release and cinch
the latch. If the customer closes the tailgate and it is nearby the fully closed position, the
latch “pulls” the tailgate into the lock. This prevents the tailgate from not being closed
properly. PTM is also responsible for releasing the latch.
If the customer orders a powered tailgate, PTM additionally controls a hydraulic pump to
open and close the tailgate. Motion requests may be initiated by various sources:
• outside handle switch (open)
• shut-face close switch (close)
• Key FOB (open and close)
• Switch in the passenger compartment (open and close)
In powered version, the power tailgate module also comes with an obstacle detection which
is split into two functions:
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• Sensing elements around the border of the tailgate
• Obstacle detection through counterforce determination
If an obstacle is detected, the tailgate will move on in reverse direction.
Beside the normal operation mode (power open and close), PTM provides some additional
functions in powered version:
• Possibility to stop the tailgate in mid-travel position by pressing a switch
• Garage height programming by pressing the shut-face switch for at least 3 seconds
• manual open and close feature
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Connectors and pin assignment PTM
A
X1
X2
5797
5790
5791
6000
6126
5797
147
A
A
C
C
C
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
Tin reflow
20
20 / 0,5mm²
20
20 / 0,5mm²
20
20 / 0,5mm²
20
16 / 1mm²
16 / 1mm²
20 / 0,5mm²
20
20 / 0,5mm²
16 / 1mm²
20 / 0,5mm²
20
Pigtail Wire Color
Pigtail Wire Gauge
5512
Switch Return
Pawl Switch
Spare Discrete Input #2 *
Sector Switch
Liftglass Ajar Switch *
Liftgate Outside Handle Switch
Chime/Spare Output *
Latch Open/Release
Latch Close/Cinch
Ratchet Switch/Gate Ajar
Spare Discrete Input #1 *
Obstacle Sensor Signal
Drain (shield) wire for latch release & cinch
Close Switch (Shut Face)
Liftgate Ajar Signal (to Wiper Module) *
N/C
N/C
N/C
Terminal Plating
7000
Circuit Description
Shield Group
Circuit #
Cavity
X1-A
X1-B
X1-C
X1-D
X1-E
X1-F
X1-G
X1-H
X1-J
X1-K
X1-L
X1-M
X1-N
X1-P
X1-R
X1-S
X1-T
X1-V
Twist Group & Rate
A
X3
Page 149
X2-A
X2-B
X2-C
X2-D
X2-E
X2-F
X2-G
X2-H
X2-J
X2-K
X2-L
X2-M
X3-A
X3-B
X3-C
X3-D
X3-E
X3-F
X3-G
XJ3-H
5060
6112
9073
750
840
5798
5799
GMLAN In
GMLAN Out
Garage Position/Spare Analog Input
Open/Close Switch
Power On/Off (Disable Switch)
GND
Power Low - VBATT1 (10A latch)
N/C
N/C
N/C
N/C
Power High - VBATT2 (20A liftgate)
N/C
N/C
N/C
Drain (shield) wire for gate open & close
N/C
N/C
Gate Open
Gate Close
* not use for 3710
148
B
B
Tin reflow
Tin reflow
20 / 0,5mm²
20 / 0,5mm²
Tin reflow
Tin reflow
Tin reflow
Tin reflow
20 / 0,5mm²
20 / 0,5mm²
12 / 4mm²
16 / 1mm²
Tin reflow
12 / 4mm²
D
Tin reflow
12
D
D
Tin reflow
Tin reflow
12 / 4mm²
12 / 4mm²
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SDM (Sensing & Diagnostic Module)
The sensing and diagnostic module recognizes car crashes using acceleration sensors.
In case of emergency airbags and seat belt pretensioners are activated.
Block diagram SDM
BATT
GND
GMLAN - LSCAN
SDM10
AOS
(SASS/
PPD-CPOD)
Run/Crank
ESS
(8 max)
Driver Seat Position Sensor
Driver Seatbelt Switch
Buckled = Open
Unbuckled = Closed
Cluster
Frontal
Side
Rear
Rollover
Sensing
Airbag Warning Indicator
Driver Seatbelt Indicator
Optional:
Pass. Seatbelt Indicator
S1_HI - S8_HI
S1_LO - S8_LO
DSPS
Deployment Loops
(18 max)
DSB
L1_HI - L18_HI
High
DS_RTN
L1_LO - L18_LO
Buckled = Open
Unbuckled = Closed
Pass. Seat Position Sensor
PSPS
Passenger Seatbelt Switch
PSB
OFF_TT
Pass. Seatbelt
Reminder
Sensor
Second Row Left Seatbelt Switch
Buckled = Open
Unbuckled = Closed
Second Row Center Seatbelt
Switch
Buckled = Open
Unbuckled = Closed
Second Row Right Seatbelt
Switch
CRSB
RRSB
CUT_HI
On
Key Switch OR Push Button
Pass. Airbag
OFF
Indicator
High side driver
Pass. Airbag
ON
Indicator
High side driver
Pass.
Seatbelt
Indicator
LRSB
PS_RTN
Off
High side driver
SBR_PAD
ON_TT
Buckled = Open
Unbuckled = Closed
Low
CUT_LO
149
PSB_TT