Panoramic Glass Roof Motor-Control Unit Input Test
NOTE:
Make sure the fuses associated with the system is OK.
If the panoramic glass roof works OK manually, but will not work in AUTO, or reverses frequently (obstacle detection), reset the panoramic glass roof motor-control unit before proceeding with the input test.

1.
Turn the vehicle to the OFF (LOCK) mode.

2.
Disconnect the panoramic glass roof motor-control unit 14P connector.
Panoramic Glass Roof Motor-Control Unit 14P Connector (female terminals)

3.
Inspect the connector and socket terminals to be sure they are all making good contact:
If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
If the terminals are OK, go to step 4.

4.
With the connectors still disconnected, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 5.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
12
RED
Disconnect these connectors:
Power window master switch 37P connector
Front passenger's power window switch 37P connector
Check for continuity between terminal No. 12 and power window master switch 37P connector terminal No. 36:
There should be continuity
An open in the LIN(P/W) wire
Check for continuity between terminal No. 12 and front passenger's power window switch 37P connector terminal No. 34:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity to ground:
There should be no continuity.
A short to ground in the LIN (P/W) wire
13
TAN
Disconnect power sunshade motor-control unit 14P connector
Check for continuity between terminal No. 13 and power sunshade motor-control unit 14P connector terminal No. 13:
There should be continuity
An open in the SUNSHADE CONTL wire
Check for continuity to ground:
There should be no continuity.
A short to ground in the SUNSHADE CONTL wire

5.
Reconnect the connector, and do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, replace the panoramic glass roof motor-control unit.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
1
GRN
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
4
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G401)
An open or high resistance in the ground wire
9
GRY
Vehicle ON mode, panoramic glass roof switch in CLOSE position
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty panoramic glass roof switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Vehicle ON mode, panoramic glass roof switch released
Measure the voltage to ground:
There should be battery voltage.
Faulty panoramic glass roof switch
A short to ground in the wire
8
LT GRN
Vehicle ON mode, panoramic glass roof switch in TILT position
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty panoramic glass roof switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Vehicle ON mode, panoramic glass roof switch released
Measure the voltage to ground:
There should be battery voltage.
Faulty panoramic glass roof switch
A short to ground in the wire
7
BLU
Vehicle ON mode, panoramic glass roof switch in OPEN position
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty panoramic glass roof switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Vehicle ON mode, panoramic glass roof switch released
Measure the voltage to ground:
There should be battery voltage.
Faulty panoramic glass roof switch
A short to ground in the wire
14
PUR
Vehicle ON mode, panoramic glass roof switch in AUTO (OPEN) or AUTO (CLOSE) position
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty panoramic glass roof switch
Poor ground (G401) or an open in the ground wire
An open or high resistance in the wire
Vehicle ON mode, panoramic glass roof switch released
Measure the voltage to ground:
There should be battery voltage.
Faulty panoramic glass roof switch
A short to ground in the wire