2007 Compass Patriot MK Factory Service Manual 8 - ELECTRICAL

DIAGNOSIS AND TESTING

B106B-REAR DEFROST CONTROL CIRCUIT LOW (TIPM)





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    With the ignition on. Battery voltage greater than 10.4 volts.

  • Set Condition:

    A shorted low condition on the (C515) Rear Defogger Control Output or (C16) Fused Rear Defogger Control Output circuit.


Possible Causes
  
(C515) REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO GROUND
  
(C16) FUSED REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT PARTIAL SHORT TO GROUND (IF EQUIPPED WITH HEATED MIRRORS)
  
HEATED MIRRORS (IF EQUIPPED)
  
TIPM
  



Diagnostic Test

1. VERIFY DTC B106B–REAR DEFROST CONTROL CIRCUIT LOW IS ACTIVE

Ensure the Rear Defogger is switched off.
With the scan tool, erase TIPM DTCs.
Operate the Rear Defogger Switch several times.
With the scan tool, read TIPM DTCs.

Does the scan tool display active DTC B106B-REAR DEFROST CONTROL CIRCUIT LOW?

Yes


No

2. INSPECT (C515) REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT AT REAR WINDOW GRID

Inspect (C515) Rear Window Defogger Control Output wiring at rear window grid. If necessary remove trim around rear window.
Check for a chafed, pierced or pinched wire. Also look for a metal object that may cause a short to ground condition at the grid.

Were there any problems found?

Yes


No

3. VEHICLE EQUIPPED WITH HEATED MIRRORS


Is this vehicle equipped with heated mirrors?

Yes


No

4. DISCONNECT MIRROR AND RE-CHECK DTC

NOTE: For this step disconnect each outside rearview mirror one at a time and re–check DTC's.


With the scan tool, erase TIPM DTCs.
Operate the Rear Defogger Switch several times.
With the scan tool, read TIPM DTCs.

Does the scan tool display active DTC B106B-REAR DEFROST CONTROL CIRCUIT LOW?

Yes


No

5. (C16) FUSED REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO GROUND



Turn the ignition off.
Both outside review mirrors should be disconnected at this time.
Disconnect the TIPM C8 harness connector.
Measure the resistance between ground and the (C16) Fused Rear Window Defogger Control Output circuit at the TIPM C8 harness connector.

Is the resistance below 100 ohms?

Yes


No

6. (C515) REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO GROUND



Turn the ignition off.
Disconnect the Electric Heated Backlite (Power) 1-way connector.
Disconnect the TIPM C8 harness connector.
Measure the resistance between ground and the (C515) Rear Window Defogger Control Output circuit at the TIPM C8 harness connector.

Is the resistance below 100 ohms?

Yes


No

7. TOTALLY INTEGRATED POWER MODULE

NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.


Using the schematics as a guide, inspect the wire harness and connectors.
Pay particular attention to all Power and Ground circuits.

Were any problems found?

Yes


No

B106C-REAR DEFROST CONTROL CIRCUIT HIGH (TIPM)





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    With the ignition on. Battery voltage greater than 10.4 volts.

  • Set Condition:

    A shorted high condition in the (C515) Rear Defogger Control Output circuit or (C16) Fused Rear Defogger Control Output circuit.


Possible Causes
  
(C515) REAR DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO BATTERY VOLTAGE
  
EXCESSIVE RESISTANCE IN THE DEFOGGER GRID OR (Z908) GROUND CIRCUIT FOR THE GRID
  
(C16) FUSED REAR DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO BATTERY VOLTAGE (IF EQUIPPED WITH HEATED MIRRORS)
  
(Z928)/(Z960) GROUND CIRCUIT (IF EQUIPPED WITH HEATED MIRRORS)
  
HEATED MIRRORS (IF EQUIPPED)
  
TOTALLY INTEGRATED POWER MODULE
  



Diagnostic Test

1. CHECK FOR ACTIVE DTC B106C – REAR DEFROST CONTROL CIRCUIT HIGH IN THE TIPM

Turn the ignition on.
With the scan tool, record and erase DTC's
Operate the Rear Defogger Switch several times.
With the scan tool, read DTC's.

Does the scan tool display active DTC B106C– REAR DEFROST CONTROL CIRCUIT HIGH?

Yes


No

2. CHECKING THE WINDOW GRID AND (Z908) GROUND CIRCUIT

Turn the ignition off.
Disconnect the Electric Heated Backlite (Power) 1-way connector.
Using a 12-volt test light connected to 12-volts, probe the power terminal at the grid.

Does the test light illuminate? Compare with a known good vehicle, if necessary.

Yes


No

3. (Z908) GROUND CIRCUIT OPEN



Turn the ignition off.
Disconnect the Electric Heated Backlite (Ground) 1-way connector.
Using a 12-volt test light connected to 12-volts, probe the (Z908) ground circuit at the 1-way connector.

Does the test light illuminate brightly?

Yes


No

4. VEHICLE EQUIPPED WITH HEATED MIRRORS


Is vehicle equipped with heated mirrors?

Yes


No

5. DISCONNECT MIRROR AND RE–CHECK DTC

NOTE: For this step disconnect each outside rearview mirror one at a time and re–check DTC's.


With the scan tool, erase TIPM DTCs.
Operate the Rear Defogger Switch several times.
With the scan tool, read TIPM DTCs.

Does the scan tool display active DTC B106C-REAR DEFROST CONTROL CIRCUIT HIGH?

Yes


No

6. MIRROR GROUND CIRCUIT



Using a 12-volt test light connected to 12-volts, probe the (Z928) or (Z960) ground circuit at the mirror connector.

Does the test light illuminate brightly?

Yes


No

7. (C515) REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO BATTERY VOLTAGE



Turn the ignition off.
Disconnect the TIPM C8 harness connector.
Ignition on, engine not running.
Measure the voltage between (C515) Rear Window Defogger Control Output circuit and ground at the TIPM C8 harness connector.

Is there any voltage present?

Yes


No

8. (C16) FUSED REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO BATTERY VOLTAGE



Ignition on, engine not running.
Measure the voltage between (C16) Fused Rear Window Defogger Control Output circuit and ground at the TIPM C8 harness connector.

Is there any voltage present?

Yes


No

9. TOTALLY INTEGRATED POWER MODULE

NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.


Using the schematics as a guide, inspect the wire harness and connectors.
Pay particular attention to all Power and Ground circuits.

Were any problems found?

Yes


No

B106D-REAR DEFROST CONTROL CIRCUIT OPEN (TIPM)





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    With the ignition on. Battery voltage greater than 10.4 volts.

  • Set Condition:

    An open condition on the (C515) Rear Defogger Control Output circuit.


Possible Causes
  
TERMINAL DAMAGE OR CORROSION
  
(C515) REAR DEFOGGER CONTROL OUTPUT CIRCUIT OPEN
  
DEFOGGER GRID OR (Z908) GROUND CIRCUIT FOR THE GRID OPEN
  
TOTALLY INTEGRATED POWER MODULE
  



Diagnostic Test

1. CHECK FOR ACTIVE DTC B106D–REAR DEFROST CONTROL CIRCUIT OPEN

Turn the ignition on.
With the scan tool, record and erase DTC's.
Operate the Rear Defogger Switch several times.
With the scan tool, read DTC's.

Does the scan tool display active DTC B106D–REAR DEFROST CONTROL CIRCUIT OPEN?

Yes


No

2. VISUAL AND PHYSICAL CONNECTOR AND TERMINAL INSPECTION

Turn the ignition off.
Inspect the following connector terminal condition. Check for signs of corrosion build up or damage that would compromise the terminal to controller pin connector.

NOTE: Make sure that all in-line connectors are inspected for corrosion and/or damage.


Disconnect the rear window defogger grid connectors.
Disconnect the C8 TIPM harness connector.
Visually inspect the wiring harness. Look for any chafed, pierced, pinched or partially broken wires hidden in the wire insulation.

Were any of the above conditions found?

Yes


No

3. (C515) REAR DEFOGGER CONTROL OUTPUT CIRCUIT OPEN



Turn the ignition off.
Measure the resistance of the (C515) Rear Defogger Control Output circuit at the between the C8 TIPM harness connector and the 1-way connector.

Is the resistance below 5.0 ohms?

Yes


No

4. CHECKING THE WINDOW GRID AND (Z908) GROUND CIRCUIT

Turn the ignition off.
Disconnect the Electric Heated Backlite (Power) 1-way connector.
Using a 12-volt test light connected to 12-volts, probe the power terminal at the grid.

Does the test light illuminate?

Yes


No

5. (Z908) GROUND CIRCUIT OPEN



Turn the ignition off.
Disconnect the Electric Heated Backlite (Ground) 1-way connector.
Using a 12-volt test light connected to 12-volts, probe the (Z908) ground circuit at the 1-way connector.

Does the test light illuminate brightly?

Yes


No

6. TOTALLY INTEGRATED POWER MODULE

NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.


Using the schematics as a guide, inspect the wire harness and connectors.
Pay particular attention to all Power and Ground circuits.

Were any problems found?

Yes


No

B10C2 - REAR DEFROST SWITCH STUCK - (CCN)

For a complete wiring diagram Refer to Section 8W.

Theory of Operation


The switch input changes when the switch is pushed down. A stored DTC B10C2 indicates that the Electronic Back Light (EBL) mode switch was stuck in a pushed position for more than 10 seconds, but has since returned to its normal state. An active DTC B10C2 indicates that the EBL mode switch is stuck in a pushed position. An active DTC B10C2 will prevent proper EBL mode switch and status indicator function.



Possible Causes
  
OBJECT HOLDING ELECTRONIC BACK LIGHT (EBL) MODE SWITCH IN A PUSHED POSITION
  
SUBSTANCE CAUSING EBL MODE SWITCH TO GET STUCK IN A PUSHED POSITION
  
A/C HEATER CONTROL
  



Diagnostic Test

1. INSPECT THE A/C HEATER CONTROL FOR DAMAGE

Inspect the A/C Heater Control for damage.

Is the A/C Heater Control damaged?

Yes


No

2. INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE EBL MODE SWITCH TO STAY OR STICK IN A PUSHED POSITION

Inspect the A/C Heater Control for anything that would cause the EBL mode switch to stay or stick in a pushed position.

Is anything present that would cause the EBL mode switch to stay or stick in a pushed position?

Yes


No

3. CHECK FOR NORMAL EBL MODE SWITCH AND STATUS INDICATOR FUNCTION

Turn the ignition on.
Press the EBL mode switch on and off several times while observing the EBL status indicator.

Does the EBL status indicator turn on and off?

Yes


No

4. VERIFY THAT DTC B10C2 – REAR DEFROST SWITCH STUCK IS STILL ACTIVE

With the scan tool, erase DTCs.
Turn the ignition off, wait 10 seconds, and then turn the ignition on. Wait 1 minute before proceeding.
With the scan tool, read DTCs.

Does the scan tool display active: B10C2 – REAR DEFROST SWITCH STUCK?

Yes


No

B10ED-REAR DEFROST CONTROL CIRCUIT OVERCURRENT (TIPM)





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    With the ignition on. Battery voltage greater than 10.4 volts.

  • Set Condition:

    An overcurrent condition on the (C515) Rear Defogger Control Output circuit or the (C16) Fused Rear Defogger Control Output circuit.


Possible Causes
  
TERMINAL DAMAGE OR CORROSION
  
EXCESSIVE RESISTANCE IN THE DEFOGGER GRID OR (Z908) GROUND CIRCUIT FOR THE GRID
  
(C515) REAR DEFOGGER CONTROL OUTPUT CIRCUIT HIGH RESISTANCE
  
(C16) FUSED REAR DEFOGGER CONTROL OUTPUT CIRCUIT HIGH RESISTANCE (IF EQUIPPED WITH HEATED MIRRORS)
  
(Z928)/(Z960) GROUND CIRCUIT (IF EQUIPPED WITH HEATED MIRRORS)
  
HEATED MIRRORS (IF EQUIPPED)
  
TOTALLY INTEGRATED POWER MODULE
  



Diagnostic Test

1. CHECK FOR ACTIVE DTC B10ED–REAR DEFROST CONTROL CIRCUIT OVERCURRENT

Turn the ignition on.
With the scan tool, record and erase DTC's.
Operate the Rear Defogger Switch several times.
With the scan tool, read DTC's.

Does the scan tool display active DTC B10ED-REAR DEFROST CONTROL CIRCUIT OVERCURRENT?

Yes


No

2. VISUAL AND PHYSICAL CONNECTOR AND TERMINAL INSPECTION

Turn the ignition off.
Inspect the following connector terminal condition. Check for signs of corrosion build up or damage that would compromise the terminal to controller pin connector.

NOTE: Make sure that all in-line connectors are inspected for corrosion and/or damage.


Disconnect the TIPM C8 harness connector.
Visually inspect the wiring harness. Look for any chafed, pierced, pinched or partially broken wires hidden in the wire insulation.

Were any of the above conditions found?

Yes


No

3. VEHICLE EQUIPPED WITH HEATED MIRRORS


Is vehicle equipped with heated mirrors?

Yes


No

4. (C16) FUSED REAR DEFOGGER CONTROL OUTPUT CIRCUIT HIGH RESISTANCE



Disconnect both mirror connectors.
With a jumper wire, connect one end to the (C16) Fused Rear Defogger Control Output circuit at one mirror connector and the other to a clean chassis ground.
Using a 12-volt test light to battery voltage, probe the (C16) Rear Defogger Control Output circuit in the TIPM C8 harness connector.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.


NOTE: Repeat this test for each outside mirror.



Does the test light illuminate brightly for each mirror circuit?

Yes


No

5. DISCONNECT ONE MIRROR AND RE–CHECK DTC

NOTE: For this step have only one outside rearview mirror disconnected at a time and re–check DTC's.


Reconnect the TIPM and one outside rearview mirror.
With the scan tool, erase TIPM DTCs.
Operate the Rear Defogger Switch several times.
With the scan tool, read TIPM DTCs.

Does the scan tool continue to display active DTC B10ED-REAR DEFROST CONTROL CIRCUIT OVERCURRENT for each mirror?

Yes


No

6. (Z928)/(Z960) GROUND CIRCUIT



NOTE: Perform this test on the mirror that caused the code to set.


Using a 12-volt test light connected to 12-volts, probe the (Z928) or (Z960) ground circuit at the mirror connector.

Does the test light illuminate brightly?

Yes


No

7. (C515) REAR DEFOGGER CONTROL OUTPUT CIRCUIT HIGH RESISTANCE



Disconnect the TIPM C8 if not disconnected.
Disconnect the Electric Heated Backlite (Power) 1-way connector.
With a jumper wire, connect one end to the (C515) Rear Defogger Control Output circuit at the 1-way connector and the other to a clean chassis ground.
Using a 12-volt test light to battery voltage, probe the (C515) Rear Defogger Control Output circuit in the TIPM C8 harness connector.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.



Does the test light illuminate brightly?

Yes


No

8. CHECKING THE WINDOW GRID AND (Z908) GROUND CIRCUIT

Turn the ignition off.
Disconnect the Electric Heated Backlite (Power) 1-way connector.
Using a 12-volt test light connected to 12-volts, probe the power terminal at the grid.

Does the test light illuminate? Compare with a known good vehicle, if necessary.

Yes


No

9. (Z908) GROUND CIRCUIT OPEN



Turn the ignition off.
Disconnect the Electric Heated Backlite (Ground) 1-way connector.
Using a 12-volt test light connected to 12-volts, probe the (Z908) ground circuit at the 1-way connector.

Does the test light illuminate brightly?

Yes


No

10. TOTALLY INTEGRATED POWER MODULE

NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.


Using the schematics as a guide, inspect the wire harness and connectors.
Pay particular attention to all Power and Ground circuits.

Were any problems found?

Yes


No