Jeep Grand Cherokee WK. Manual — part 526
B1D87–SEAT RECLINER MOTOR CONTROL CIRCUIT PERFORMANCE (CONTINUED)
6.
CHECK THE (G493) DRIVER SEAT RECLINER POSTION SENSOR GROUND FOR AN OPEN
Measure the resistance of the (G493) Driver Seat Recliner Position
Sensor Ground circuit at the Driver Recliner Seat Adjuster Motor con-
nector to the C2 connector.
Is the resistance above 1.0 ohm?
Yes
>> Repair the (G493) Driver Seat Recliner Position Senor
Ground circuit for an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST –
VER 1
No
>> Replace the Memory Seat Module.
Perform POWER SEAT SYSTEM VERIFICATION TEST –
VER 1
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POWER SEATS - ELECTRICAL DIAGNOSTICS
WK
B1D87–SEAT RECLINER MOTOR CONTROL CIRCUIT PERFORMANCE (CONTINUED)
7.
CHECK THE (P141) DRIVER SEAT RECLINER UP DRIVER WIRE FOR AN OPEN
Disconnect the Memory Seat Module C2 connector.
NOTE: Check connectors – Clean and repair as necessary.
Measure the resistance of the (P141) Driver Seat Recliner Up Driver
circuit at the Driver Recliner Seat Adjuster Motor connector to the C2
connector.
Is the resistance above 1.0 ohm?
Yes
>> Repair the (P141) Driver Seat Recliner Up Driver circuit for
an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST –
VER 1
No
>> Go To 8
WK
POWER SEATS - ELECTRICAL DIAGNOSTICS
8N - 265
B1D87–SEAT RECLINER MOTOR CONTROL CIRCUIT PERFORMANCE (CONTINUED)
8.
CHECK THE (P143) DRIVER SEAT RECLINER DOWN DRIVER AN OPEN
Measure the resistance of the (P143) Driver Seat Recliner Down
Driver circuit at the Driver Recliner Seat Adjuster Motor connector to
the C2 connector.
Is the resistance above 1.0 ohm?
Yes
>> Repair the (P143) Driver Seat Recliner Down Driver circuit
for an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST –
VER 1
No
>> Replace the Memory Seat Module.
Perform POWER SEAT SYSTEM VERIFICATION TEST –
VER 1
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POWER SEATS - ELECTRICAL DIAGNOSTICS
WK
B1D9B–SEAT HORIZONTAL FRONT STOP NOT LEARNED
For the Power Seat System circuit diagram (Refer to 8 - ELECTRICAL/POWER SEATS - SCHEMATICS AND DIA-
GRAMS)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Whenever the seat motor is activated.
•
Set Condition:
Seat becomes de-standardized. If the seat is not standardized, an Easy Exit/Entry function can not be per-
formed. If seat is standardized (learn seat cushion horizontal front hardstop) and then becomes de-standard-
ized (conditions are: seat cushion motor is 5% past the expected hard stop position or seat cushion hall sensor
failure is occured), a DTC is logged.
Possible Causes
OTHER DIAGNOSTIC TROUBLE CODES SET IN THE MEMORY SEAT MODULE
SEAT STANDERDIZATION ROUTINE NOT PERFORMED
Diagnostic Test
1.
CHECK FOR RELATED DIAGNOSTIC TROUBLE CODES
Turn the ignition on.
With the scan tool, read DTC’s.
Does the scan tool display any seat position sensor or circuit performance DTC’s?
Yes
>> Diagnose and repair the other DTC(s) first. Refer to the Table of Contents in this Section for a complete
list of symptoms.
No
>> Go To 2
2.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase DTC’s
Move the seat in the full forward horizontal position.
With the scan tool, read DTC’s.
Does the scan tool display B1D9B–SEAT HORIZONTAL FRONT STOP NOT LEARNED?
Yes
>> With the scan tool, perform the MSM Standard Routine.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1.
WK
POWER SEATS - ELECTRICAL DIAGNOSTICS
8N - 267
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