Jeep Grand Cherokee WK. Manual — part 481
VEHICLE ENTERTAINMENT CONTROL
MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
HANDS FREE PHONE MODULE . . . . . . . . . 202
DRIVER DOOR MODULE . . . . . . . . . . . . . . . 202
PASSENGER DOOR MODULE . . . . . . . . . . . 202
HEATED SEAT CONTROL MODULE . . . . . . 202
MEMORY SEAT CONTROL MODULE . . . . . . 203
SCCM - CAN-B . . . . . . . . . . . . . . . . . . . . . . 203
U0231–LOST COMMUNICATION WITH RAIN
SENSING MODULE . . . . . . . . . . . . . . . . . . . 203
U0241–LOST COMMUNICATION WITH AUTO
HIGHBEAM HEADLAMP CONTROL
MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
U1000–CAN B BUS (+) CIRCUIT– MEMORY
MIRROR MODULE . . . . . . . . . . . . . . . . . . . . 204
U1001–CAN B BUS (-) CIRCUIT– MEMORY
MIRROR MODULE . . . . . . . . . . . . . . . . . . . . 207
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
B1DA7–SWITCH POWER SUPPLY CIRCUIT LOW — PASSENGER MEMORY MIRROR
MODULE
For the Power Memory Mirror System circuit diagram (Refer to 8 - ELECTRICAL/POWER MIRRORS - SCHEMAT-
ICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously
•
Set Condition:
If the Passenger Memory Mirror Module detects an internal module failure.
Possible Causes
PASSENGER MEMORY MIRROR MODULE
Diagnostic Test
1.
REPLACE THE PASSENGER MEMORY MIRROR MODULE
Repair
Replace the Passenger Memory Mirror Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
8N - 84
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
WK
B1D0A, B1D13–MIRROR POSITION SENSOR POWER SUPPLY CIRCUIT HIGH –
MEMORY MIRROR MODULE
WK
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
8N - 85
B1D0A, B1D13–MIRROR POSITION SENSOR POWER SUPPLY CIRCUIT HIGH – MEMORY MIRROR
MODULE (CONTINUED)
For the Power Memory Mirror System circuit diagram (Refer to 8 - ELECTRICAL/POWER MIRRORS - SCHEMAT-
ICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously
•
Set Condition:
DTC B1D0A – If the Driver Memory Mirror Module senses voltage is greater than 5.5 volts for more than 30
ms on the (P669) Driver Mirror Sensor Supply circuit.
DTC B1D13 – If the Passenger Memory Mirror Module senses voltage is greater than 5.5 volts for more than
30 ms on the (P666) Passenger Mirror Sensor Supply circuit.
Possible Causes
FOR THE DRIVER MEMORY MIRROR SYSTEM:
(P669) DRIVER MIRROR SENSOR SUPPLY CIRCUIT SHORTED TO VOLTAGE
(P669) DRIVER MIRROR SENSOR SUPPLY CIRCUIT OPEN
(P69) DRIVER MIRROR SENSOR GROUND CIRCUIT OPEN
DRIVER OUTSIDE REARVIEW MIRROR OPEN
DRIVER MEMORY MIRROR MODULE
FOR THE PASSENGER MEMORY MIRROR SYSTEM:
(P666) PASSENGER MIRROR SENSOR SUPPLY CIRCUIT SHORTED TO VOLTAGE
(P666) PASSENGER MIRROR SENSOR SUPPLY CIRCUIT OPEN
(P66) PASSENGER MIRROR SENSOR GROUND CIRCUIT OPEN
PASSENGER OUTSIDE REARVIEW MIRROR OPEN
PASSENGER MEMORY MIRROR MODULE
NOTE: This procedure addresses the Driver Memory Mirror system’s circuits and components and the Pas-
senger Memory Mirror system’s circuits and components. Select only that which applies to the system you
are diagnosing.
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase DTCs.
Operate the Mirror Switch in all directions several times.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display: B1D0A or B1D13 MIRROR POSITION SENSOR POWER SUPPLY CIRCUIT
HIGH?
Yes
>> Go To 2
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 BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
8N - 86
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
WK
B1D0A, B1D13–MIRROR POSITION SENSOR POWER SUPPLY CIRCUIT HIGH – MEMORY MIRROR
MODULE (CONTINUED)
2.
TEST FOR A SHORTED OUTSIDE REARVIEW MIRROR
For the Driver Memory Mirror System, proceed as follows:
•
Turn the ignition off.
•
Disconnect the Driver Outside Rearview Mirror connector.
•
Turn the ignition on.
•
Measure the voltage between the (P669) Driver Mirror Sensor
Supply circuit and the (P69) Driver Mirror Sensor Ground circuit.
For the Passenger Memory Mirror System, proceed as follows:
•
Turn the ignition off.
•
Disconnect the Passenger Outside Rearview Mirror connector.
•
Turn the ignition on.
•
Measure the voltage between the (P666) Passenger Mirror Sen-
sor Supply circuit and the (P66) Passenger Mirror Sensor Ground
circuit.
What is the voltage?
4.8 Volts To 5.2 Volts
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).
Below 4.8 Volts
Go To 3
Above 5.2 Volts
Go To 5
WK
POWER MIRRORS - ELECTRICAL DIAGNOSTICS
8N - 87
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