Driver Door Module (Ddm) (Dmfl) - Electrical Diagnostics: Diagnosis RAM Cab & Chassis 3500 HD

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Scheme 163

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

DIAGNOSTIC TEST

1. TEST FOR INTERMITTENT CONDITION With the scan tool, record and erase the DTC's. Operate the Driver Door Lock Switch in all positions several times. Cycle the ignition from on to off. Turn the ignition on. With the scan tool, read the DTC's. Does the scan tool display B1800-2A-DRIVER DOOR LOCK/UNLOCK SWITCH - SIGNAL STUCK IN RANGE? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
2. DOOR LOCK SWITCH Check the switch for any objects that could cause a sticking condition. Was anything found that could cause a sticking condition? Yes Clean or remove the object as necessary. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Replace the Door Lock Switch. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

Scheme 164

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase the DTC's. Operate the Front Left Window up and down several times. Wait 30 seconds. With the scan tool, read the active DTC's. Does the scan tool display B18B5-00-MASTER SWITCH-FRONT LEFT WINDOW SWITCH as active? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Operate the switch several more times. If the switch ever sticks, replace it. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
2. MASTER POWER WINDOW/DOOR LOCK SWITCH NOTE: Anytime this code is active, the switch must be replaced. Repair Replace the Driver Window/Door Lock Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase the DTC's. Operate the Front Right Window from the master switch up and down several times. Wait 30 seconds. With the scan tool, read the active DTC's. Does the scan tool display B18B6-00-MASTER SWITCH-FRONT RIGHT WINDOW SWITCH as active? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Operate the switch several more times. If the switch ever sticks, replace it. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
2. MASTER POWER WINDOW/DOOR LOCK SWITCH NOTE: Anytime this code is active, the switch must be replaced. Repair Replace the Driver Window/Door Lock Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase the DTC's. Operate the Rear Left Window, from the master switch, up and down several times. Wait 30 seconds. With the scan tool, read the active DTC's. Does the scan tool display B18B7-00-MASTER SWITCH-REAR LEFT WINDOW SWITCH as active? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Operate the switch several more times. If the switch ever sticks, replace it. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
2. MASTER POWER WINDOW/DOOR LOCK SWITCH NOTE: Anytime this code is active, the switch must be replaced. Repair Replace the Driver Window/Door Lock Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase the DTC's. Operate the Front Left Window up and down several times. Wait 30 seconds. With the scan tool, read the active DTC's. Does the scan tool display B18B8-00-MASTER SWITCH-REAR RIGHT WINDOW SWITCH as active? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Operate the switch several more times. If the switch ever sticks, replace it. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
2. MASTER POWER WINDOW/DOOR LOCK SWITCH NOTE: Anytime this code is active, the switch must be replaced. Repair Replace the Driver Window/Door Lock Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. VERIFY IF DTC B1D00-2A MIRROR FOLD SWITCH INPUT STUCK IS ACTIVE Turn the ignition on. With the scan tool, erase the DTC's. Press the Mirror Fold Switch in both directions several times. Cycle the ignition from on to off three times. Turn the ignition on. With the scan tool, read the active DTC's. Does the scan tool display active: B1D00-2A MIRROR FOLD SWITCH INPUT STUCK? Yes Replace the Drivers Door Window/Mirror Switch Assembly in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit. Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

Scheme 165

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. INSPECT DRIVER DOOR SWITCH ASSEMBLY FOR DAMAGE NOTE: Diagnose and repair all LIN Bus related Diagnostic Trouble Codes (DTC's) before performing this test procedure. Turn the ignition off. Inspect the Driver Door switch assembly for damage. Is the switch assembly damaged? Yes Replace the Driver Door switch assembly in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 2 .
2. INSPECT FOR OBJECT OR SUBSTANCE CAUSING MIRROR ADJUST SWITCH TO STAY OR STICK IN A PUSHED POSITION Inspect the Mirror Adjust switch for anything that would cause it to stay or stick in a pushed position. Is anything present that would cause the Mirror Adjust switch to stay or stick in a pushed position? Yes Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 3 .
3. TEST FOR INTERMITTENT CONDITION Turn the ignition on. Using a scan tool, record and erase DTC's. Press and release either Mirror Select switch. Operate the Mirror Adjust switch in all positions several times and then wait 30 seconds. Using a scan tool, read DTC's. Is the same DTC active? Yes Replace the Driver Door switch assembly in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No The conditions that caused this code to set are not present at this time. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. INSPECT DRIVER DOOR SWITCH ASSEMBLY FOR DAMAGE NOTE: Diagnose and repair all LIN Bus related Diagnostic Trouble Codes (DTC's) before performing this test procedure. Turn the ignition off. Inspect the Driver Door switch assembly for damage. Is the switch assembly damaged? Yes Replace the Driver Door switch assembly in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 2 .
2. INSPECT FOR OBJECT OR SUBSTANCE CAUSING LEFT MIRROR SELECT SWITCH TO STAY OR STICK IN A PUSHED POSITION Inspect the Left Mirror Select switch for anything that would cause it to stay or stick in a pushed position. Is anything present that would cause the Left Mirror Select switch to stay or stick in a pushed position? Yes Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 3 .
3. TEST FOR INTERMITTENT CONDITION Turn the ignition on. Using a scan tool, record and erase DTC's. Press and release the Left Mirror Select switch several times and then wait 30 seconds. Using a scan tool, read DTC's. Is the same DTC active? Yes Replace the Driver Door switch assembly in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No The conditions that caused this code to set are not present at this time. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. INSPECT DRIVER DOOR SWITCH ASSEMBLY FOR DAMAGE NOTE: Diagnose and repair all LIN Bus related Diagnostic Trouble Codes (DTC's) before performing this test procedure. Turn the ignition off. Inspect the Driver Door switch assembly for damage. Is the switch assembly damaged? Yes Replace the Driver Door switch assembly in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 2 .
2. INSPECT FOR OBJECT OR SUBSTANCE CAUSING RIGHT MIRROR SELECT SWITCH TO STAY OR STICK IN A PUSHED POSITION Inspect the Right Mirror Select switch for anything that would cause it to stay or stick in a pushed position. Is anything present that would cause the Right Mirror Select switch to stay or stick in a pushed position? Yes Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 3 .
3. TEST FOR INTERMITTENT CONDITION Turn the ignition on. Using a scan tool, record and erase DTC's. Press and release the Right Mirror Select switch several times and then wait 30 seconds. Using a scan tool, read DTC's. Is the same DTC active? Yes Replace the Driver Door switch assembly in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No The conditions that caused this code to set are not present at this time. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, erase the DTC's. Operate the Mirror Fold switch in both directions three times. Cycle the ignition from on to off three times. Turn the ignition on. With the scan tool, read the active DTC's. Does the scan tool display: B1E66-15-DRIVER MIRROR FOLD CONTROL CIRCUIT SHORT TO BATTERY OR OPEN as active? Yes Go To 2 . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit. Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
2. INSPECT MIRROR CONNECTIONS Turn the ignition off. Disconnect the Driver Outside Rearview Mirror connector at the Drivers Door Module C2 harness connector. Inspect the wiring and connectors between the mirror and the Drivers Door Module. Were there any problems found? Yes Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 3 .
3. MIRROR ASSEMBLY Turn the ignition off. Replace the Drivers Power Folding Mirror Assembly. Turn the ignition on With the scan tool, erase the DTC's. Cycle the ignition from on to off three times. Turn the ignition on. Operate the Mirror Fold switch in both directions three times. Wait 30 seconds. With the scan tool, read the active DTC's. Does the scan tool display: B1E66-15-DRIVER MIRROR FOLD CONTROL CIRCUIT SHORT TO BATTERY OR OPEN as active? Yes Replace the Drivers Door Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Test Complete. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

Scheme 166

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. CHECK ENGINE DTC's With the scan tool, read the Powertrain Control Module DTC's Are there any Charging or Battery DTC's present? No Go To 2 . Yes Refer to «DIAGNOSIS AND TESTING»(ref-476520-S37397232942012060400000) and perform the appropriate charging system or battery DTC diagnostic procedures.
2. TEST FOR INTERMITTENT CONDITION With the scan tool, record and erase the DTC's. Start the engine and run for two minutes. With the scan tool, read the active DTC's in the Door Module. Does the scan tool display; B210C-16-BATTERY VOLTAGE INPUT - CIRCUIT VOLTAGE BELOW THRESHOLD? Yes Go To 3 . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
3. (A215) FUSED B(+) OR (Z905) GROUND CIRCUITS RESISTED Turn the ignition off. Disconnect the Driver Door Module C3 connector. Turn the ignition on. Test the (A215) Fused B(+) circuits by connecting a 12-volt test light between the Fused B(+) circuit and the (Z905) Ground circuits in the door module C3 connector. The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Replace the Driver Door Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Test the (A215) Fused B(+) and the (Z905) Ground circuits to determine which one has the high resistance. Repair the necessary circuit for high resistance. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. CHECK ENGINE DTC's With the scan tool, read Powertrain Control Module DTC's. Are there any active Charging or Battery DTC's present? No Go To 2 . Yes Refer to «DIAGNOSIS AND TESTING»(ref-476520-S37397232942012060400000) and perform the appropriate charging system or battery DTC diagnostic procedure.
2. TEST FOR INTERMITTENT CONDITION With the scan tool, record and erase the DTC's. Start the engine and run for two minutes. With the scan tool, read the active door module DTC's. Does the scan tool display B210C-17-BATTERY VOLTAGE INPUT - CIRCUIT VOLTAGE ABOVE THRESHOLD? Yes Replace the Driver Door Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. CHECK ENGINE DTC's With the scan tool, read Powertrain Control Module DTC's. Are there any active Charging or Battery DTC's present? No Go To 2 . Yes Refer to «DIAGNOSIS AND TESTING»(ref-476520-S37397232942012060400000) and perform the appropriate charging system or battery DTC diagnostic procedure.
2. TEST FOR INTERMITTENT CONDITION With the scan tool, record and erase the DTC's. Start the engine and run for two minutes. With the scan tool, read the active door module DTC's. Does the scan tool display B210C-17-BATTERY VOLTAGE INPUT - CIRCUIT VOLTAGE ABOVE THRESHOLD? Yes Replace the Driver Door Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

This DTC is for information only. At some time the module was re-flashed or was reset during a power on operation. No repair is necessary.

1. CHECK ENGINE DTC's With the scan tool, read Powertrain Control Module DTC's Are there any Charging or Battery DTC's present? Yes Perform the appropriate diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-476520-S37397232942012060400000) and perform the active charging system or battery DTC diagnostic procedure.. No This code is for information only. At some time there was a low battery system voltage. Check the battery and charging system in accordance with the Service Information.

1. CHECK ENGINE DTC's With the scan tool, read Powertrain Control Module DTC's Are there any Charging or Battery DTC's present? Yes Refer to «DIAGNOSIS AND TESTING»(ref-476520-S37397232942012060400000) and perform the active charging system or battery DTC diagnostic procedure. No This code is a CAN system message for information only. Check the charging system in accordance with the Service Information.

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTC's. Operate the Driver Window switch up and down several times. Wait 30 seconds. With the scan tool, read the active DTC's. Does the scan tool display B2598-54-DOOR MODULE FRONT LEFT - MISSING CALIBRATION? Yes Go To 2 . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
2. WINDOW MODULE NOT CALIBRATED Activate the window to the full up position and continue to hold the switch for an additional two seconds. Activate the window to the full down position and continue to hold the switch for an additional two seconds. Again activate the window to the full up position and continue to hold the switch for an additional two seconds. Lower the window all the way down then press and release the switch to the express up position. Did the window move to the full up position? Yes Test complete. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 3 .
3. EXPRESS WINDOW SWITCH Turn the ignition off. Move the Driver Express Window Switch from the idle position to the up position and then to the express up position. Is there two definite detent positions felt? Yes Replace the Driver Door Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Replace the Driver Express Window Switch. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase the DTC's. Operate the Driver Window up and down several times. Wait 30 seconds. With the scan tool, read the active DTC's. Does the scan tool display B2598-96-DOOR MODULE FRONT LEFT - COMPONENT INTERNAL FAILURE? Yes Replace the Door Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No The conditions that caused this code to set are not present at this time. If this code ever repeats, replace the door module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. VERIFY DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is this DTC active? Yes Refer to «U0010-CAN INTERIOR BUS»(ref-476553-S34328582572012060400000) and perform the diagnostic procedure. No Refer to «STORED LOST COMMUNICATION DTC's»(ref-476525-S35361024732012060400000) and perform the diagnostic procedure.

Scheme 167

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE Turn the ignition on. With the scan tool, read the active DTC's. Does the scan tool display U0037-11-LIN BUS - CIRCUIT SHORT TO GROUND? Yes Go To 2 . No Refer to «STORED LOST COMMUNICATION DTC's»(ref-476525-S35361024732012060400000) and perform the diagnostic procedure.
2. CHECK THE LIN BUS CIRCUIT Turn the ignition off. Disconnect the Driver Window/Door Lock Switch C1 harness connector. Turn the ignition on. Measure the voltage between the (D500) LIN Bus circuit (2 Door cavity 3 - 4 Door cavity 6) and the (D501) LIN Bus Return circuit. Is the voltage below 7.0 Volts? Yes Go To 3 . No Replace the Driver Window/Door Lock Switch. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
3. (D500) LIN BUS CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Driver Door Module C5 harness connector. Measure the resistance between ground and the (D500) LIN Bus circuit in the Door Module C5 harness connector. Is the resistance below 10, 000 Ohms? Yes Repair the short to ground in the (D500) LIN Bus circuit. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 4 .
4. (D500) LIN BUS CIRCUIT FOR A SHORT TO THE (D501) LIN BUS RETURN CIRCUIT Measure the resistance between the (D500) LIN Bus circuit and the (D501) LIN Bus Return circuit in the Door Module C5 harness connector. Is the resistance below 10, 000 Ohms? Yes Repair the (D500) LIN Bus circuit for a short to the (D501) LIN Bus Return circuit. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Replace the Driver Door Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .

1. VERIFY THE DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is the DTC active at this time? Yes Perform the U0141-Lost Communication with IPM (FCM/TIPM) diagnostic procedure. Refer to «U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM)»(ref-476553-S23688163152012060400000) . No Perform the Stored Lost Communication DTC's diagnostic procedure. Refer to «STORED LOST COMMUNICATION DTC's»(ref-476525-S35361024732012060400000) .

1. VERIFY DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is this DTC active? Yes Refer to «U0155-LOST COMMUNICATION WITH CLUSTER/CCN»(ref-476553-S22766504022012060400000) and perform the diagnostic procedure. No Refer to «STORED LOST COMMUNICATION DTC's»(ref-476525-S35361024732012060400000) and perform the diagnostic procedure.

1. VERIFY DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is this DTC active? Yes Refer to «U0164-LOST COMMUNICATION WITH HVAC CONTROL MODULE»(ref-476553-S06491160922012060400000) and perform the diagnostic procedure. No Refer to «STORED LOST COMMUNICATION DTC's»(ref-476525-S35361024732012060400000) and perform the diagnostic procedure.

1. VERIFY DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is this DTC active? Yes Refer to «U0203-LOST COMMUNICATION WITH DOOR MODULE FRONT LEFT (DMFL) (DRIVER DOOR MODULE)»(ref-476553-S26245908642012060400000) and perform the diagnostic procedure. No Refer to «STORED LOST COMMUNICATION DTC's»(ref-476525-S35361024732012060400000) and perform the diagnostic procedure.

1. VERIFY DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is this DTC active? Yes Refer to «U0204-LOST COMMUNICATION WITH DOOR MODULE FRONT RIGHT (DMFR) (PASSENGER DOOR MODULE)»(ref-476553-S27611660902012060400000) and perform the diagnostic procedure. No Refer to «STORED LOST COMMUNICATION DTC's»(ref-476525-S35361024732012060400000) and perform the diagnostic procedure.

1. VERIFY DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is this DTC active? Yes Refer to «U0209-LOST COMMUNICATION WITH MEMORY SEAT CONTROL MODULE (MSMD)»(ref-476553-S36188331852012060400000) and perform the diagnostic procedure. No Refer to «STORED LOST COMMUNICATION DTC's»(ref-476525-S35361024732012060400000) and perform the diagnostic procedure.

1. TEST FOR INTERMITTENT CONDITION NOTE: Make sure the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, record and erase DTC's Operate the Front Window switches up and down several times. Wait 30 seconds. With the scan tool, read the active DTC's. Does the scan tool display U113D-LOST COMMUNICATION WITH MASTER POWER WINDOW SWITCH? Yes Go To 2 . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
2. (A855) FUSED B(+) CIRCUIT FOR AN OPEN NOTE: Make sure Fuse M26 in the TIPM is good before proceeding. With the scan tool, erase DTC's. Turn the ignition off. Disconnect the Driver Window/Door Lock Switch C1 harness connector. Turn the ignition on. Using a 12-volt test light connected to Ground, check the (A855) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open in the (A855) Fused B(+) circuit. If the fuse is open, make sure to check for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
3. CHECK THE LIN BUS CIRCUIT Measure the voltage between the (D500) LIN Bus circuit (2 Door cavity 3 - 4 Door cavity 6) and the (D501) LIN Bus Return circuit. Is the voltage below 7.0 Volts? Yes Go To 5 . No Go To 4 .
4. (D500) LIN BUS CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the Driver Door Module C5 harness connector. Turn the ignition on. Measure the voltage between ground and the (D500) LIN Bus circuit. Is there any voltage present? Yes Repair the short to voltage in the (D500) LIN Bus circuit. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Replace the Driver Window/Door Lock Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
5. (D501) LIN BUS RETURN CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (D501) LIN Bus Return circuit. Does the test light illuminate brightly? Yes Go To 6 . No Repair the open in the (D501) LIN Bus Return circuit. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .
6. (D500) LIN BUS CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Driver Door Module C5 harness connector. Measure the resistance between ground and the (D500) LIN Bus circuit in the Driver Door Module C5 harness connector. Is the resistance below 10, 000 Ohms? Yes Repair the short to ground in the (D500) LIN Bus circuit. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Go To 7 .
7. (D500) LIN BUS CIRCUIT FOR AN OPEN Measure the resistance of the (D500) LIN Bus circuit (2 Door cavity 3 - 4 Door cavity 6) between the Door Module C5 harness connector and the Driver Window/Door Lock Switch C1 harness connector. Is the resistance above 2.0 Ohms? Yes Repair the open in the (D500) LIN Bus circuit. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) . No Replace the Driver Door Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-476553-S41648749512012060400000) .