Jeep Grand Cherokee WK. Manual — part 505
B1D35, B1D39–MIRROR HEATER CONTROL CIRCUIT OPEN – MEMORY MIRROR MODULE (CONTINUED)
2.
TEST FOR AN OPEN OUTSIDE REARVIEW MIRROR
For the Driver Memory Mirror System, proceed as follows:
•
Press the Rear Window Defogger (EBL) mode switch off.
•
Turn the ignition off.
•
Disconnect the Driver Outside Rearview Mirror connector.
•
Connect a 12-volt test light between the (C110) Driver Mirror
Heater Driver circuit and the (C910) Driver Mirror Heater Ground
circuit.
•
Turn the ignition on.
•
Press the Rear Window Defogger (EBL) mode switch on.
For the Passenger Memory Mirror System, proceed as follows:
•
Press the Rear Window Defogger (EBL) mode switch off.
•
Turn the ignition off.
•
Disconnect the Passenger Outside Rearview Mirror connector.
•
Connect a 12-volt test light between the (C16) Passenger Mirror
Heater Driver circuit and the (C917) Passenger Mirror Heater
Ground circuit.
•
Turn the ignition on.
•
Press the Rear Window Defogger (EBL) mode switch on.
Does the test light illuminate brightly?
Yes
>> Replace the Outside Rearview Mirror in accordance with
the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No
>> Go To 3
8N - 180
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
WK
B1D35, B1D39–MIRROR HEATER CONTROL CIRCUIT OPEN – MEMORY MIRROR MODULE (CONTINUED)
3.
CHECK THE (C110) DRIVER MIRROR HEATER DRIVER CIRCUIT OR THE (C16) PASSENGER MIRROR
HEATER DRIVER CIRCUIT FOR AN OPEN
For the Driver Memory Mirror System, proceed as follows:
•
Turn the ignition off.
•
Disconnect the Driver Memory Mirror Module C1 connector.
•
Measure the resistance of the (C110) Driver Mirror Heater Driver
circuit between the Driver Outside Rearview Mirror connector and
the Driver Memory Mirror Module C1 connector.
For the Passenger Memory Mirror System, proceed as follows:
•
Turn the ignition off.
•
Disconnect the Passenger Memory Mirror Module connector.
•
Measure the resistance of the (C16) Passenger Mirror Heater
Driver circuit between the Passenger Outside Rearview Mirror
connector and the Passenger Memory Mirror Module connector.
Is the resistance below 2.0 ohms?
Yes
>> Go To 4
No, Driver MMM
Repair the (C110) Driver Mirror Heater Driver circuit for an
open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No, Passenger MMM
Repair the (C16) Passenger Mirror Heater Driver circuit for
an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
WK
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
8N - 181
B1D35, B1D39–MIRROR HEATER CONTROL CIRCUIT OPEN – MEMORY MIRROR MODULE (CONTINUED)
4.
CHECK THE (C910) DRIVER MIRROR HEATER GROUND CIRCUIT OR THE (C917) PASSENGER MIRROR
HEATER GROUND CIRCUIT FOR AN OPEN
For the Driver Memory Mirror System, proceed as follows:
•
Measure the resistance of the (C910) Driver Mirror Heater
Ground circuit between the Driver Outside Rearview Mirror con-
nector and the Driver Memory Mirror Module C1 connector.
For the Passenger Memory Mirror System, proceed as follows:
•
Measure the resistance of the (C917) Passenger Mirror Heater
Ground circuit between the Passenger Outside Rearview Mirror
connector and the Passenger Memory Mirror Module connector.
Is the resistance below 2.0 ohms?
Yes, Driver MMM
Replace the Driver Memory Mirror Module in accordance
with the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
Yes, Passenger MMM
Replace the Passenger Memory Mirror Module in accor-
dance with the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No, Driver MMM
Repair the (C910) Driver Mirror Heater Ground circuit for
an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No, Passenger MMM
Repair the (C917) Passenger Mirror Heater Ground circuit for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
8N - 182
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
WK
B1D4C–MEMORY SWITCH INPUT CIRCUIT HIGH – DRIVER MEMORY MIRROR
MODULE
WK
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
8N - 183
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