Jeep Grand Cherokee WK. Manual — part 535
INSTALLATION
1. Install parts from old seat back assembly as nec-
essary.
2. Install the seat back (1) (Refer to 23 - BODY/
SEATS/SEAT
BACK
CUSHION/COVER
-
INSTALLATION).
SWITCH-SEAT
DESCRIPTION
The driver power seat can be adjusted in eight different ways using the power seat switch. The passenger power
seat can be adjusted in four different ways. The power seat switch is located on the lower outboard side of the seat
cushion on the seat cushion side shield on all models.
The individual switches in the power seat switch assembly cannot be repaired. If one switch is damaged or faulty,
the entire power seat switch must be replaced.
OPERATION
When a power seat switch is actuated, a battery feed and a ground path are applied through the switch contacts to
the power seat adjuster or recliner adjuster motor. The selected adjuster motor operates to move the seat or recliner
through its drive unit in the selected direction until the switch is released, or until the travel limit of the adjuster is
reached. When the switch is moved in the opposite direction, the battery feed and ground path to the motor are
reversed through the switch contacts. This causes the adjuster motor to run in the opposite direction.
On vehicles equipped with memory system, a resistance signal is sent to the Memory Seat Module (MSM) via the
Controller Area Network (CAN) bus circuit, when the driver memory seat switch control knob is actuated. The MSM
is responsible for the 12v battery feed and ground path to the power seat adjuster motor. The adjuster motor oper-
ates to move the power seat adjuster mechanism through its drive unit in the selected direction until the switch is
released, or until the travel limit of the adjuster is reached.
No power seat switch should be held applied in any direction after the adjuster has reached its travel limit. The
power seat adjuster motors each contain a self-resetting circuit breaker to protect them from overload. However,
consecutive or frequent resetting of the circuit breaker may result in motor damage.
8N - 300
POWER SEATS - SERVICE INFORMATION
WK
DIAGNOSIS AND TESTING
POWER SEAT SWITCH
DRIVER WITHOUT MEMORY SEAT SYSTEM
1. Disconnect and isolate the battery negative cable.
2. Remove the power seat switch from the power seat
(Refer to 8 - ELECTRICAL/POWER SEATS/SEAT
SWITCH - REMOVAL).
3. Use an ohmmeter to test the continuity of the
power seat switch. Refer to DRIVER POWER
SEAT SWITCH WITHOUT MEMORY SEAT SYS-
TEM CONTINUITY table. If not OK, replace the
faulty power seat switch. If switch tests OK (Refer
to
8
-
ELECTRICAL/POWER
SEATS/POWER
SEAT ADJUSTER - DIAGNOSIS AND TESTING).
DRIVER POWER SEAT SWITCH WITHOUT MEMORY SEAT SYSTEM CONTINUITY
SWITCH POSITION
CONTINUITY BETWEEN
OFF
7-1, 7-2, 7-3, 7-4, 7-5, 7-8, 7-9, 7-10, 7-11
RECLINER UP
6-3, 7-1, 7-2, 7-4, 7-5, 7-8, 7-9, 7-10, 7-11
RECLINER DOWN
6-1, 7-2, 7-3, 7-4, 7-5, 7-8, 7-9, 7-10, 7-11
HORIZONTAL FORWARD
6-8, 7-1, 7-2, 7-3, 7-4, 7-5, 7-9, 7-10, 7-11
HORIZONTAL REARWARD
6-4, 7-1, 7-2, 7-3, 7-5, 7-8, 7-9, 7-10, 7-11
FRONT TILT DOWN
6-5, 7-1, 7-2, 7-3, 7-4, 7-8, 7-9, 7-10, 7-11
FRONT TILT UP
6-9, 7-1, 7-2, 7-3, 7-4, 7-5, 7-8, 7-10, 7-11
REAR TILT DOWN
6-10, 7-1, 7-2, 7-3, 7-4, 7-5, 7-8, 7-9, 7-11
REAR TILT UP
6-11, 7-1, 7-2, 7-3, 7-4, 7-5, 7-8, 7-9, 7-10
PASSENGER SEAT
1. Disconnect and isolate the battery negative cable.
2. Remove the power seat switch from the power seat
(Refer to 8 - ELECTRICAL/POWER SEATS/SEAT
SWITCH - REMOVAL).
3. Use an ohmmeter to test the continuity of the
power seat switch. Refer to PASSENGER POWER
SEAT SWITCH CONTINUITY table. If not OK,
replace the faulty power seat switch. If switch tests
OK (Refer to 8 - ELECTRICAL/POWER SEATS/
POWER SEAT ADJUSTER - DIAGNOSIS AND
TESTING).
WK
POWER SEATS - SERVICE INFORMATION
8N - 301
PASSENGER POWER SEAT SWITCH CONTINUITY
SWITCH POSITION
CONTINUITY BETWEEN
OFF
7-1, 7-3, 7-4, 7-8
RECLINER UP
6-3, 7-1, 7-4, 7-8
RECLINER DOWN
6-1, 7-3, 7-4, 7-8
HORIZONTAL FORWARD
6-8, 7-1, 7-3, 7-4
HORIZONTAL REARWARD
6-4, 7-1, 7-3, 7-8
DRIVER WITH MEMORY SEAT SYSTEM
1. Disconnect and isolate the battery negative cable.
2. Remove the power seat switch from the power seat
(Refer to 8 - ELECTRICAL/POWER SEATS/SEAT
SWITCH - REMOVAL).
3. Use an ohmmeter to test the resistance of the
power seat switch. Refer to DRIVER POWER
SEAT SWITCH WITH MEMORY SEAT SYSTEM
CONTINUITY table. If not OK, replace the faulty
power seat switch. If switch tests OK (Refer to 8 -
ELECTRICAL/POWER
SEATS/POWER
SEAT
ADJUSTER - DIAGNOSIS AND TESTING).
DRIVER POWER SEAT SWITCH WITH MEMORY SEAT SYSTEM CONTINUITY
SWITCH POSITION
CONTINUITY BETWEEN
RESISTANCE VALUE
OFF
10-4
OPEN
OFF
10-11
OPEN
OFF
1-4
47 OHMS
OFF
1-11
47 OHMS
REAR TILT UP
10-11
169 OHMS
REAR TILT DOWN
10-11
76 OHMS
HORIZONTAL FORWARD
10-11
43 OHMS
HORIZONTAL REARWARD
10-11
10 OHMS
RECLINER UP
10-4
43 OHMS
RECLINER DOWN
10-4
10 OHMS
FRONT TILT UP
10-4
169 OHMS
FRONT TILT DOWN
10-4
76 OHMS
ALL RESISTANCE VALUES ARE ± FIVE PERCENT
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Remove the seat cushion side panel from the seat and disconnect the electrical harness connector.
3. Using a small flat bladed tool, gently release the four mounting tabs that secure the power seat switch and sep-
arate switch from trim panel.
8N - 302
POWER SEATS - SERVICE INFORMATION
WK
INSTALLATION
1. Position the power seat switch on the seat cushion side panel. Gently apply pressure to the switch until the four
mounting tabs that secure the switch snap into place.
2. Connect the power seat switch electrical connector.
3. Install the seat cushion side panel on the seat.
4. Connect the battery negative cable.
5. Verify normal operation of the power seat assembly.
WK
POWER SEATS - SERVICE INFORMATION
8N - 303
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