Page 697 of 4284

Symptom:
LEFT MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW
When Monitored and Set Condition:
LEFT MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW
When Monitored: Continuously when the PCI bus is active.
Set Condition: This code is set when the mirror sensor feedback to the MSMM is less than
the mirror out of range low value stored in EEPROM. Code will remain for 50 ignition
cycles.
POSSIBLE CAUSES
MSMM HORIZONTAL POSITION LOW
STORED DIAGNOSTIC TROUBLE CODE
LEFT MIRROR HORIZONTAL POSITION SIGNAL WIRE SHORT TO GROUND
LEFT POWER MIRROR
TEST ACTION APPLICABILITY
1 With the DRBIIIt, erase the DTC from Memory Seat Mirror Module.
Operate the driver's power seat and memory system.
Turn the ignition switch to the Off position then start the engine and let run for one
minute.
With the DRB check for the same DTC to reset in the MSMM.
Did the same DTC reset?All
Ye s®Go To 2
No®Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Left Power Mirror connector.
Turn the ignition on.
Measure the voltage of the Left Mirror Horizontal Position Signal circuit in the Left
Power Mirror harness connector.
Is the voltage between 4.5 and 5.5 volts?All
Ye s®Replace the Left Power Mirror.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Go To 3
668
MEMORY SEAT
Page 698 of 4284
TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Memory Seat Mirror Module C1 connector.
Disconnect the Left Power Mirror connector.
Measure the resistance of the Left Mirror Horizontal Position Signal circuit to
ground at the Left Power Mirror harness side connector.
Is the resistance below 1000.0 ohms?All
Ye s®Repair the Left Mirror Horizontal Position Signal wire for a short
to ground.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Replace the Memory Seat Mirror Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
669
MEMORY SEAT
LEFT MIRROR HORIZONTAL SENSOR OUT OF RANGE LOW ÐContinued
Page 699 of 4284

Symptom:
LEFT MIRROR VERTICAL SENSOR OUT OF RANGE HIGH
When Monitored and Set Condition:
LEFT MIRROR VERTICAL SENSOR OUT OF RANGE HIGH
When Monitored: Continuously when the PCI bus is active.
Set Condition: This code is set when the mirror sensor feedback to the Memory Seat
Mirror Module is greater than the mirror out of range high value stored in EEPROM. Code
will remain for 50 ignition cycles.
POSSIBLE CAUSES
LEFT MIRROR SENSOR GROUND WIRE OPEN
LEFT MIRROR VERTICAL POSITION WIRE SHORTED TO VOLTAGE
STORED DIAGNOSTIC TROUBLE CODE
LEFT MIRROR VERTICAL POSITION SIGNAL OPEN
LEFT POWER MIRROR
MEMORY SEAT MIRROR MODULE SENSOR GROUND
MEMORY SEAT MIRROR MODULE VERTICAL POSITION SIGNAL
TEST ACTION APPLICABILITY
1 With the DRBIIIt, erase the DTC from Memory Seat Mirror Module.
Operate the driver's power seat and memory system.
Turn the ignition switch to the Off position then start the engine and let run for one
minute.
With the DRB check for the same DTC to reset in the MSMM.
Did the same DTC reset?All
Ye s®Go To 2
No®Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Left Power Mirror connector.
Turn the ignition on.
Measure the voltage of the Left Mirror Vertical Position Signal circuit in the Left
Power Mirror harness connector.
Is the voltage between 4.5 and 5.5 volts?All
Ye s®Go To 3
No®Go To 6
670
MEMORY SEAT
Page 700 of 4284

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Left Power Mirror connector.
Measure the resistance of the Left Mirror Sensor Ground circuit in the harness
connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Go To 4
No®Go To 5
4 If there are no possible causes remaining, view repair. All
Repair
Replace the Left Power Mirror.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Disconnect the Left Power Mirror connector.
Disconnect the Memory Seat Mirror Module C1 connector.
Measure the resistance of Left Mirror Sensor Ground circuit between the Memory
Seat Mirror Module connector and the Left Power Mirror connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the Memory Seat Mirror Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Repair the open Sensor Ground circuit.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
6 Turn the ignition off.
Disconnect the Left Power Mirror connector.
Disconnect the Memory Seat Mirror Module C1 connector.
Turn the ignition on.
Measure the voltage of Left Mirror Vertical Position Signal circuit.
Is there any voltage present?All
Ye s®Repair the Left Mirror Vertical Position Signal circuit for a short
to voltage.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Go To 7
7 Turn the ignition off.
Disconnect the Memory Seat Mirror Module C1 connector.
Disconnect the Left Power Mirror connector.
Measure the resistance of the Left Mirror Vertical Position Signal circuit from the left
power mirror connector to the Memory Seat Mirror Module connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the Memory Seat Mirror Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Repair the open Left Mirror Vertical Position Signal wire.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
671
MEMORY SEAT
LEFT MIRROR VERTICAL SENSOR OUT OF RANGE HIGH ÐContinued
Page 701 of 4284

Symptom:
LEFT MIRROR VERTICAL SENSOR OUT OF RANGE LOW
When Monitored and Set Condition:
LEFT MIRROR VERTICAL SENSOR OUT OF RANGE LOW
When Monitored: Continuously when the PCI bus is active.
Set Condition: This code is set when the mirror sensor feedback to the Memory Seat
Mirror Module is less than the mirror out of range low value stored in EEPROM. Code will
remain for 50 ignition cycles
POSSIBLE CAUSES
MSMM VERTICAL POSITION LOW
STORED DIAGNOSTIC TROUBLE CODE
LEFT MIRROR VERTICAL POSITION SIGNAL WIRE SHORT TO GROUND
LEFT POWER MIRROR
TEST ACTION APPLICABILITY
1 With the DRBIIIt, erase the DTC from Memory Seat Mirror Module.
Operate the driver's power seat and memory system.
Turn the ignition switch to the Off position then start the engine and let run for one
minute.
With the DRB check for the same DTC to reset in the MSMM.
Did the same DTC reset?All
Ye s®Go To 2
No®Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Left Power Mirror connector.
Turn the ignition on.
Measure the voltage of the Left Mirror Vertical Position Signal circuit in the Left
Power Mirror harness connector.
Is the voltage between 4.5 and 5.5 volts?All
Ye s®Replace the Left Power Mirror.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Go To 3
672
MEMORY SEAT
Page 702 of 4284
TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Memory Seat Mirror Module C1 connector.
Disconnect the Left Power Mirror connector.
Measure the resistance of the Left Mirror Vertical Position Signal circuit to ground
at the Left Power Mirror harness side connector.
Is the resistance below 1000.0 ohms?All
Ye s®Repair the Left Mirror Vertical Position Signal wire for a short to
ground.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Replace the Memory Seat Mirror Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
673
MEMORY SEAT
LEFT MIRROR VERTICAL SENSOR OUT OF RANGE LOW ÐContinued
Page 703 of 4284

Symptom:
MEMORY POSITION SWITCH STUCK
When Monitored and Set Condition:
MEMORY POSITION SWITCH STUCK
When Monitored: Anytime the Body Control Module is awake.
Set Condition: If the Memory switch is active for over 10 seconds.
POSSIBLE CAUSES
DTC PRESENT
MEMORY SET SWITCH STUCK
MEMORY SELECT SWITCH MUX SHORT TO GROUND
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 With the DRBIIIt, record and erase DTC's.
Cycle the ignition OFF then back ON.
With the DRBIIIt, read DTCs.
Operate the Memory Set switch several times while monitoring the DRBIII.
Does the DRBIIItdisplay MEMORY SWITCH INPUT STUCK?All
Ye s®Go To 2
No®Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
2 Disconnect the Memory Set Switch connector
Turn the ignition on.
With the DRBIIItin Sensors, read the Memory Select SW Volts.
Is the voltage above 4.8 volts?All
Ye s®Replace the Memory Set Switch.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
No®Go To 3
3 Turn the ignition off.
Disconnect the Memory Set switch connector.
Disconnect the BCM C1 harness connector.
Measure the resistance between ground and the Memory Select Switch MUX circuit.
Is the resistance above 1000.0 ohms?All
Ye s®Go To 4
No®Repair the Memory Select Switch MUX circuit for a short to
ground.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
674
MEMORY SEAT
Page 704 of 4284
TEST ACTION APPLICABILITY
4 If there are no possible causes remaining, view repair. All
Repair
Replace the Body Control Module.
Perform MEMORY SYSTEM VERIFICATION TEST - VER 1.
675
MEMORY SEAT
MEMORY POSITION SWITCH STUCK ÐContinued