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Cabin Compartment Node (Ccn) - Electrical Diagnostics: Other Dodge Dakota III рестайлинг

Communication Devices 54 illustrations ~7640 words

Monitor Conditions

  1. When Monitored: With the ignition on and when requested to turn on by the Occupant Restraint Controller (ORC).

Set Conditions

  1. Set Condition: The Instrument Cluster software detects the voltage across the Airbag Lamp is below 0.3 of a volt when ON.

Possible Causes

Possible Causes
INSTRUMENT CLUSTER
  1. When Monitored: With the ignition on and when requested to turn on by the Occupant Restraint Controller (ORC).
  1. Set Condition: The Instrument Cluster software detects the voltage across the Airbag Lamp is above 5.0 volts when ON.
Possible Causes
INSTRUMENT CLUSTER
  1. When Monitored: With the ignition in any position except off.
  1. Set Condition: The Instrument Cluster detects a stuck switch state on the (X20) Radio Control MUX circuit for more than 30 seconds.
Possible Causes
(X20) REMOTE CONTROL MUX CIRCUIT SHORT TO GROUND
(X20) REMOTE CONTROL MUX CIRCUIT SHORT TO (G902) SWITCH MUX RETURN CIRCUIT
LEFT REMOTE RADIO SWITCH
RIGHT REMOTE RADIO SWITCH
CLOCKSPRING
INSTRUMENT CLUSTER (CCN)

Scheme 217

Scheme 217: Diagnostic Test

Scheme 218

Scheme 218

Scheme 219

Scheme 219

Scheme 220

Scheme 220

Scheme 221

Scheme 221
  1. CHECK FOR ACTIVE DTC With the scan tool, read the active DTCs. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTCs. Does the scan tool display this DTC as active? Yes Go to step 2 No If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  2. LEFT REMOTE RADIO SWITCH Turn the ignition off. Disconnect the Left Remote Radio Switch harness connector. Turn the ignition on. With the scan tool monitor the Remote Radio Control Switch voltage. Is the voltage approximately 5.0 volts? Yes Replace the Left Remote Radio Switch in accordance with the service information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing»(ref-352654-S29617915202010010600000) . No Go to step 3
  3. RIGHT REMOTE RADIO SWITCH Turn the ignition off. Disconnect the Right Remote Radio Switch harness connector. Turn the ignition on. With the scan tool monitor the Remote Radio Control Switch voltage. Is the voltage approximately 5.0 volts? Yes Replace the Right Remote Radio Switch in accordance with the service information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing»(ref-352654-S29617915202010010600000) . No Go to step 4
  4. CLOCKSPRING Turn the ignition off. Disconnect the Clockspring C1 harness connector. Turn the ignition on. With the scan tool monitor the Remote Radio Control Switch voltage. Is the voltage approximately 5.0 volts? Yes Check the (X20) Radio Control MUX circuit for a short between the clockspring and the remote radio switches. If OK, replace the Clockspring in accordance with the service information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing»(ref-352654-S29617915202010010600000) . No Go to step 5
  5. (X20) RADIO CONTROL MUX CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Instrument Cluster C1 harness connector. Measure the resistance between ground and the (X20) Radio Control MUX circuit. Is the resistance below 100.0 Ohms? Yes Repair the (X20) Radio Control MUX circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing»(ref-352654-S29617915202010010600000) . No Go to step 6
  6. (X20) RADIO CONTROL MUX CIRCUIT SHORT TO (G902) SWITCH MUX RETURN CIRCUIT Disconnect the Instrument Cluster C2 harness connector. Measure the resistance between the (X20) Radio Control MUX circuit and the (G902) Switch MUX Return circuit. Is the resistance below 100.0 Ohms? Yes Repair the (X20) Radio Control MUX circuit for a short to the (G902) Switch MUX Return circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing»(ref-352654-S29617915202010010600000) . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the Instrument Cluster (CCN) in accordance with the service information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing»(ref-352654-S29617915202010010600000) .

Scheme 222

Scheme 222: Circuit Schematic
  1. When Monitored: With the ignition on.
  1. Set Condition: MUX Return circuit shorted to ground.
Possible Causes
HEADLAMP SWITCH
(L900) MUX RETURN CIRCUIT
INSTRUMENT CLUSTER

Scheme 223

Scheme 223: Diagnostic Test
  1. INTERMITTENT CONDITION Turn the ignition on. With the Scan Tool, clear all CCN DTCs. Turn the Headlamps on. With the Scan Tool, read the DTC information. Does the Scan Tool read: B1607-HEADLAMP SWITCH INPUT CIRCUIT LOW? Yes Go to step 2 No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  2. HEADLAMP SWITCH Disconnect the Headlamp Switch connector. Turn the ignition on. Measure the voltage of the (L900) MUX Return circuit. Does the voltage read 5.0 volts? Yes Go to step 3 No Replace the Headlamp Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  3. (L900) MUX RETURN CIRCUIT Turn the ignition off. Disconnect the Headlamp Switch connector. Disconnect the Instrument Cluster C2 connector. Measure the resistance of the (L900) MUX Return circuit to ground. Is the resistance below 5.0 ohms? Yes Repair the (L900) Headlamp MUX return circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  1. When Monitored: With the ignition on.
  1. Set Condition: MUX Return Circuit open or shorted to voltage.
Possible Causes
HEADLAMP SWITCH
(L900) HEADLAMP MUX RETURN CIRCUIT
(L307) HEADLAMP MUX INPUT CIRCUIT
INSTRUMENT CLUSTER

Scheme 224

Scheme 224: Diagnostic Test

Scheme 225

Scheme 225
  1. INTERMITTENT CONDITION Turn the ignition on. With the Scan Tool, clear all CCN DTCs. Turn the Headlamps on. With the Scan Tool, read the DTC information. Does the Scan Tool read: B1608-HEADLAMP SWITCH INPUT CIRCUIT HIGH? Yes Go to step 2 No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  2. HEADLAMP SWITCH Disconnect the Headlamp Switch connector. Turn the ignition on. Measure the voltage between the (L900) Headlamp MUX Return circuit and (L307) Headlamp Input MUX circuit. Does the voltage read 0.0 volts? Yes Replace the Headlamp Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Go To 3
  3. (L900) MUX RETURN CIRCUIT Turn the ignition off. Disconnect the Headlamp Switch connector. Disconnect the Instrument Cluster C2 connector. Measure the resistance of the (L900) Headlamp MUX Return circuit. Is the resistance below 5.0 ohms? Yes Go to step 4 No Repair the (L900) Headlamp MUX Return circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  4. INSTRUMENT CLUSTER Turn the ignition off. Disconnect the Headlamp Switch connector. Disconnect the Instrument Cluster C2 connector. Measure the resistance of the (L307) Headlamp MUX circuit. Is the resistance below 5.0 ohms? Yes Replace the instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Repair the (L307) Headlamp MUX circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)

Scheme 226

Scheme 226: Circuit Schematic
  1. When Monitored: With the ignition on.
  1. Set Condition: The Instrument Cluster detects a short to ground condition on the Panel Illumination circuit.
Possible Causes
PANEL LAMPS DIMMER CIRCUIT SHORTED TO GROUND
DIMMED COMPONENT INTERNALLY SHORTED
INSTRUMENT CLUSTER

Scheme 227

Scheme 227: Diagnostic Test

Scheme 228

Scheme 228

Scheme 229

Scheme 229

Scheme 230

Scheme 230
  1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTCs. Turn the ignition off, wait 10 seconds then turn the ignition on. Turn the headlamps on. With the scan tool, read DTCs. Does the scan tool display: B1613-PANEL ILLUMINATION CONTROL CIRCUIT LOW? Yes Go to step 2 No The condition that caused this code to set is not present at this time. Using the wiring diagram as a guide, inspect the wiring and connectors for an intermittent condition. Operate the system several times and recheck for active DTCs. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  2. CHECK THE HEADLAMP SWITCH FOR AN INTERNAL SHORT With the scan tool, erase Instrument Cluster DTCs. Turn the ignition off. Disconnect the Headlamp Switch harness connector. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display B1613-PANEL ILLUMINATION CONTROL CIRCUIT LOW? Yes Go to step 3 No Replace the Headlamp Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  3. CHECK THE TRANSFER CASE SELECTOR SWITCH FOR AN INTERNAL SHORT Reconnect the Headlamp Switch harness connector. With the scan tool, erase Instrument Cluster DTCs. Turn the ignition off. Disconnect the Transfer Case Selector Switch harness connector. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display B1613-PANEL ILLUMINATION CONTROL CIRCUIT LOW? Yes Go to step 4 No Replace the Transfer Case Selector Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  4. CHECK THE A/C HEATER CONTROL FOR AN INTERNAL SHORT Reconnect the Transfer Case Selector Switch harness connector. With the scan tool, erase Instrument Cluster DTCs. Turn the ignition off. Disconnect the A/C Heater Control C1 harness connector. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display B1613-PANEL ILLUMINATION CONTROL CIRCUIT LOW? Yes Go to step 5 No Replace the A/C Heater Control in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  5. CHECK THE CENTER BEZEL LAMP FOR AN INTERNAL SHORT Reconnect the A/C Heater Control C1 harness connector. With the scan tool, erase Instrument Cluster DTCs. Turn the ignition off. Disconnect the Center Bezel Lamp harness connector. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display B1613-PANEL ILLUMINATION CONTROL CIRCUIT LOW? Yes Go to step 6 No Replace the Center Bezel Lamp in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  6. PANEL LAMPS DIMMING CIRCUIT SHORTED TO GROUND Reconnect the Center Bezel Lamp harness connector. Turn the ignition off. Disconnect the Instrument Cluster C3 harness connector. Using the wiring diagram as a guide, disconnect each dimmed component and measure the resistance of the Panel Illumination Control Circuits from the Cluster C3 harness connector to ground. Was there a short to ground condition found? Yes Repair the correct Panel Illumination Circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)

Scheme 231

Scheme 231: Circuit Schematic
  1. When Monitored: With the ignition on.
  1. Set Condition: The Instrument Cluster detects an all open condition on the Panel Illumination Control circuits.
Possible Causes
ALL PANEL ILLUMINATED CIRCUITS OPEN
INSTRUMENT CLUSTER
Possible Causes
HEADLAMP SWITCH
(M22) COURTESY LAMP OUTPUT CIRCUIT SHORT TO GROUND
INSTRUMENT CLUSTER

Scheme 232

Scheme 232: Diagnostic Test
  1. INTERMITTENT CONDITION Turn the ignition on. With the Scan Tool, clear all CCN DTCs. Turn the Dome Lamps on. With the Scan Tool, read the DTC information. Does the Scan Tool read: B161B-COURTESY/DOME LAMP OUTPUT CIRCUIT SHORT TO GROUND? Yes Go to step 2 No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  2. HEADLAMP SWITCH Disconnect the Headlamp Switch connector. Turn the Ignition on. Using the Scan Tool. Does the Scan Tool display Headlamp Switch 5.0 volts? Yes Go to step 3 No Replace the Headlamp Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  3. INSTRUMENT CLUSTER/OUTPUT CIRCUIT SHORT Turn the ignition on. Disconnect the Headlamp Switch connector. Disconnect the Instrument Cluster C3 connector. Measure the resistance of the (M22) Courtesy Lamp Output circuit to ground. Is the resistance below 5.0 ohms? Yes Repair the (M22) Courtesy lamp Output circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)

Scheme 233

Scheme 233: Circuit Schematic
Possible Causes
(M28) GLOVE BOX/MAP LAMP OUTPUT CIRCUIT SHORT TO GROUND
INSTRUMENT CLUSTER

Scheme 234

Scheme 234: Diagnostic Test
  1. INTERMITTENT CONDITION Turn the ignition on. With the Scan Tool, clear all CCN DTCs. Turn the Glove Box lamps on. With the Scan Tool, read the DTC information. Does the Scan Tool read: B1623-GLOVEBOX/MAP LAMP OUTPUT CIRCUIT SHORT TO GROUND? Yes Go to step 2 No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  2. INSTRUMENT CLUSTER Turn the ignition off. Disconnect the Glovebox Lamp Switch harness connector. Disconnect the Instrument Cluster C3 connector. Measure the resistance of the (M28) Glovebox Lamp Output circuit to ground. Is the resistance below 5.0 ohms? Yes Repair the (M28) Glovebox-Map Lamp Output circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)

Scheme 235

Scheme 235: Circuit Schematic
Possible Causes
(M22) CARGO LAMP OUTPUT CIRCUIT SHORTED TO GROUND
HEADLAMP SWITCH
INSTRUMENT CLUSTER

Scheme 236

Scheme 236: Diagnostic Test
  1. INTERMITTENT CONDITION Turn the ignition on. With the scan tool, clear all CCN DTCs. Turn the Cargo Lamps on. With the scan tool, read the DTC information. Does the scan tool read: B1627-CARGO LAMP OUTPUT CIRCUIT SHORT TO GROUND? Yes Go To 2 No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  2. HEADLAMP SWITCH Disconnect the Headlamp Switch connector. Turn the ignition on. Using the scan tool, measure the Headlamp Switch voltage. Does the scan tool display Headlamp Switch 5.0 volts? Yes Go to step 3 No Replace the Headlamp Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  3. INSTRUMENT CLUSTER Turn the ignition off. Disconnect the Headlamp Switch connector. Disconnect the Instrument Cluster C3 connector. Measure the resistance of the of the (M22) Cargo Lamp Output circuit to ground. Is the resistance below 5.0 Ohms? Yes Repair the Cargo Lamp Output circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
Possible Causes
HEADLAMP SWITCH
(M22) CARGO LAMP OUTPUT CIRCUIT OPEN
INSTRUMENT CLUSTER
  1. When Monitored: At all times when battery power is supplied to the Instrument Cluster.
  1. Set Condition: When the Instrument Cluster senses voltage to the driver door lock switch below .25 volts for over 10 seconds, the input circuit is not valid and this code will set.
Possible Causes
(G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND
DOOR LOCK SWITCH SHORT TO GROUND
INSTRUMENT CLUSTER

Scheme 237

Scheme 237: Diagnostic Test

Scheme 238

Scheme 238
  1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, erase all DTCs. Operate the Driver Door Lock Switch in the lock and unlock position several times. Cycle the ignition from on to off. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display B1801-DRIVER DOOR LOCK/UNLOCK SWITCH INPUT CIRCUIT LOW? Yes Go to step 2 No The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  2. DOOR LOCK SWITCH SHORTED Disconnect the Driver Window/Door Lock Switch connector. With the scan tool in sensors, read the DRIVER DOOR LOCK SWITCH voltage. Is the voltage approximately 5.0? Yes Replace the Driver Window/Door Lock Switch. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 3
  3. DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Cluster C2 connector. Measure the resistance between ground and the (G161) Driver Door Lock Switch Mux circuit. Is the resistance below 10,000 Ohms? Yes Repair the (G161) Driver Door Lock Switch Mux circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  1. When Monitored: At all times when battery power is supplied to the Instrument Cluster.
  1. Set Condition: When the Instrument Cluster senses voltage to the driver door lock switch between 2.0 and 2.9 volts for over 10 seconds, this code will set.
Possible Causes
(G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT PARTIAL SHORT TO GROUND
DOOR LOCK SWITCH STUCK
INSTRUMENT CLUSTER
  1. When Monitored: At all times when battery power is supplied to the Instrument Cluster.
  1. Set Condition: When the Instrument Cluster senses voltage to the driver door lock switch between 0.5 and 1.5 volts for over 10 seconds, this code will set.
Possible Causes
(G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT PARTIAL SHORT TO GROUND
DRIVER DOOR LOCK SWITCH STUCK
INSTRUMENT CLUSTER
  1. When Monitored: At all times when battery power is supplied to the Instrument Cluster.
  1. Set Condition: When the Instrument Cluster senses voltage to the passenger door lock switch below .25 volts, the input circuit is not valid and this code will set.
Possible Causes
(G160) PASSENGER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND
DOOR LOCK SWITCH SHORT TO GROUND
INSTRUMENT CLUSTER

Scheme 239

Scheme 239: Diagnostic Test

Scheme 240

Scheme 240
  1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, erase all DTCs. Operate the Driver Door Lock Switch in the lock and unlock position several times. Cycle the ignition from on to off. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display B1806-PASSENGER DOOR LOCK/UNLOCK SWITCH INPUT CIRCUIT LOW? Yes Go to step 2 No The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  2. DOOR LOCK SWITCH SHORTED Disconnect the Passenger Window/Door Lock Switch connector. With the scan tool in sensors, read the PASSENGER DOOR LOCK SWITCH voltage. Is the voltage approximately 5.0 volts? Yes Replace the Passenger Window/Door Lock Switch. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 3
  3. DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Cluster C2 connector. Measure the resistance between ground and the Passenger Door Lock Switch Mux circuit. Is the resistance below 10,000 Ohms? Yes Repair the Passenger Door Lock Switch Mux circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  1. When Monitored: At all times when battery power is supplied to the Instrument Cluster.
  1. Set Condition: When the Instrument Cluster senses voltage to the passenger door lock switch between 2.0 and 2.9 Volts for over 10 seconds, this code will set.
Possible Causes
(G160) PASSENGER DOOR LOCK SWITCH MUX CIRCUIT PARTIAL SHORT TO GROUND
DOOR LOCK SWITCH STUCK
INSTRUMENT CLUSTER
  1. When Monitored: At all times when battery power is supplied to the Instrument Cluster.
  1. Set Condition: When the Instrument Cluster senses voltage to the passenger door lock switch between 0.5 and 1.5 Volts for over 10 seconds, this code will set.
Possible Causes
(G160) PASSENGER DOOR LOCK SWITCH MUX CIRCUIT PARTIAL SHORT TO GROUND
DOOR LOCK SWITCH STUCK
INSTRUMENT CLUSTER
  1. When Monitored: With the ignition on.
  1. Set Condition: The Instrument Cluster detects an internal failure.
Possible Causes
INSTRUMENT CLUSTER
  1. When Monitored: With the ignition on.
  1. Set Condition: Vehicle configuration information not programmed into the Instrument Cluster.
Possible Causes
NO COMMUNICATION WITH FRONT CONTROL MODULE
ACTIVE FCM DTCs
INSTRUMENT CLUSTER
FRONT CONTROL MODULE
  1. When Monitored: Continuously.
  1. Set Condition: When the Cluster senses the Horn Switch input for more than 30 seconds.
Possible Causes
(X3) HORN SWITCH SENSE CIRCUIT SHORTED TO GROUND
(X3) HORN SWITCH SENSE CIRCUIT SHORTED TO (G902) SWITCH MUX RETURN CIRCUIT
(X3) HORN SWITCH SENSE CIRCUIT SHORTED TO (V937) S/C SWITCH RETURN CIRCUIT
HORN SWITCH
CLOCKSPRING
INSTRUMENT CLUSTER

Scheme 241

Scheme 241: Diagnostic Test

Scheme 242

Scheme 242

Scheme 243

Scheme 243

Scheme 244

Scheme 244

Scheme 245

Scheme 245

Scheme 246

Scheme 246
  1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. Using the scan tool, record and erase Diagnostic Trouble Codes (DTCs). Operate the Horn Switch several times. Cycle the ignition from on to off three times. Turn the ignition on and wait 30 seconds. Using the scan tool, read DTCs. Does the scan tool display: B2339-HORN SWITCH STUCK? Yes Go to step 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 «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  2. CHECK FOR SHORTED (X3) HORN SWITCH SENSE CIRCUIT BETWEEN CLOCKSPRING AND CLUSTER Turn the ignition off. Remove the steering column shroud in accordance with the Service Information. Disconnect the Clockspring C1 harness connector. Turn the ignition on. Using the scan tool, erase DTCs. Cycle the ignition from on to off three times. Turn the ignition on and wait 30 seconds. Using the scan tool, read DTCs. Does the scan tool display: B2339-HORN SWITCH STUCK? Yes Go to step 3 No Go to step 5
  3. CHECK (X3) HORN SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND BETWEEN CLOCKSPRING AND CLUSTER Turn the ignition off. Disconnect the Cluster C1 harness connector. Measure the resistance of the (X3) Horn Switch Sense circuit between ground and the Clockspring C1 harness connector. Is the resistance below 10k Ohms? Yes Repair the (X3) Horn Switch Sense circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 4
  4. CHECK (X3) HORN SWITCH SENSE CIRCUIT FOR A SHORT TO (G902) SWITCH MUX RETURN CIRCUIT OR TO (V937) S/C SWITCH RETURN CIRCUIT BETWEEN CLOCKSPRING AND CLUSTER Measure the resistance between the (X3) Horn Switch Sense circuit and the (G902) Switch MUX Return circuit at the Clockspring C1 harness connector. Measure the resistance between the (X3) Horn Switch Sense circuit and the (V937) S/C Switch Return circuit at the Clockspring C1 harness connector. Is the resistance below 10k Ohms for either measurement? Yes Repair all circuits with a resistance below 10k Ohms for a short to the (X3) Horn Switch Sense circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  5. CHECK FOR A SHORTED HORN SWITCH WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury. Disconnect the Horn Switch connector in accordance with the Service Information. NOTE: Before proceeding, thoroughly inspect the wiring harness between the Horn Switch and the Clockspring. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals. Reconnect the Clockspring C1 connector. WARNING: Turn the ignition on, then reconnect the 12-volt battery. Failure to follow these instructions may result in possible serious or fatal injury. Using the scan tool, erase DTCs. Cycle the ignition from on to off three times. Turn the ignition on and wait 30 seconds. Using the scan tool, read DTCs. Does the scan tool display: B2339-HORN SWITCH STUCK? Yes Go to step 6 No Replace the Horn Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  6. CHECK (X3) HORN SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND BETWEEN HORN SWITCH AND CLOCKSPRING Turn the ignition off. Disconnect the Clockspring C3 harness connector. Measure the resistance of the (X3) Horn Switch Sense circuit between ground and the Clockspring C3 connector. Is the resistance below 10k Ohms? Yes Repair the (X3) Horn Switch Sense circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 7
  7. CHECK (X3) HORN SWITCH SENSE CIRCUIT FOR A SHORT TO (V937) S/C SWITCH RETURN CIRCUIT BETWEEN HORN SWITCH AND CLOCKSPRING Measure the resistance between the (X3) Horn Switch Sense circuit and the (V937) S/C Switch Return circuit at the Clockspring C3 connector. Is the resistance below 10k Ohms? Yes Repair the (V937) S/C Switch Return circuit for a short to the (X3) Horn Switch Sense circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Clockspring in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .

Scheme 247

Scheme 247: Circuit Schematic
  1. When Monitored: With the ignition on.
  1. Set Condition: Transfer Case Range Select Switch voltage less than 0.1568 volts for 5 seconds.
Possible Causes
(K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT OPEN
(K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT SHORTED TO GROUND
(K977) MODE SELECT CIRCUIT OPEN
(K977) MODE SELECT CIRCUIT SHORTED TO GROUND
TRANSFER CASE SELECTOR SWITCH
INSTRUMENT CLUSTER

Scheme 248

Scheme 248: Diagnostic Test

Scheme 249

Scheme 249

Scheme 250

Scheme 250

Scheme 251

Scheme 251

Scheme 252

Scheme 252

Scheme 253

Scheme 253
  1. TCASE (DTCM) SWITCH VOLTAGE LESS THAN 0.2 VOLTS Ignition on, engine not running. With the scan tool under Data Display, read the TCASE (DTCM) Switch voltage. Is the voltage less than 0.2 of a volt? Yes Go to step 2 No Go to step 8
  2. (K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT VOLTAGE LESS THAN 0.2 OF A VOLT Turn the ignition off to the lock position Disconnect the Transfer Case Selector Switch harness connector. Ignition on, engine not running. Measure the voltage between ground and the (K77) 5-volt Selector Switch Supply circuit. Is the voltage less than 0.2 of a volt? Yes Go to step 3 No Go to step 5
  3. (K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT OPEN Turn the ignition off to the lock position Disconnect the Instrument Cluster C1 harness connector. Measure the resistance of the (K77) 5 Volt Selector Switch Supply circuit between the Instrument cluster C1 harness connector and the Transfer Case Selector Switch harness connector Is the resistance greater than 5.0 Ohms? Yes Repair the (K77) 5 Volt Selector Switch Supply circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 4
  4. (K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K77) 5 Volt Selector Switch Supply circuit. Is the resistance less than 5.0 Ohms? Yes Repair the (K77) 5 Volt Selector Switch Supply circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  5. TRANSFER CASE SELECTOR SWITCH Turn the ignition off to the lock position Connect a jumper wire between the (K77) 5 Volt Selector Switch Supply circuit and the (K977) Mode Select circuit in the Transfer Case Selector Switch harness connector. Ignition on, engine not running. With the scan tool in Data Display, read the Range Switch voltage. NOTE: The switch voltage should be approximately 5.0 volts. Is the voltage 5.0 volts (±.02 of a volt)? Yes Replace the Transfer Case Selector Switch in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 6
  6. (K977) MODE SELECT CIRCUIT SHORT TO GROUND Disconnect the Instrument Cluster C2 connector. Measure the resistance between ground and the (K977) Mode Select circuit. Is the resistance less than 5.0 Ohms? Yes Repair the (K977) Mode Select circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 7
  7. (K977) MODE SELECT CIRCUIT OPEN Measure the resistance of the (K977) Mode Select circuit between the Instrument Cluster C2 harness connector and the Transfer Case Selector Switch harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (K977) Mode Select circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  8. INTERMITTENT WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Test complete.
  1. When Monitored: With the ignition on.
  1. Set Condition: Transfer Case Range Select Switch voltage greater than 4.86 Volts for 5 seconds.
Possible Causes
(K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT SHORTED TO VOLTAGE
(K977) MODE SELECT CIRCUIT SHORTED TO VOLTAGE
(K977) MODE SELECT CIRCUIT OPEN
(Z973) TRANSFER CASE SELECTOR SWITCH GROUND CIRCUIT OPEN
TRANSFER CASE SELECTOR SWITCH
INSTRUMENT CLUSTER

Scheme 254

Scheme 254

Scheme 255

Scheme 255
  1. TCASE (DTCM) SWITCH VOLTAGE ABOVE 4.8 VOLTS Ignition on, engine not running. Using the scan tool, read the T-CASE Switch voltage. Is the volage above 4.8 Volts? Yes Go to step 2 No Go to step 7
  2. (K77) 5 VOLT SELECTOR SWITCH SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off to the lock position Disconnect the Transfer Case Selector Switch harness connector. Disconnect the Instrument Cluster C2 harness connector. Ignition on, engine not running. Measure the voltage of the (K77) 5-Volt Selector Switch Supply circuit at the Transfer Case Selector Switch harness connector. Is there any voltage present? Yes Repair the (K77) 5 Volt Selector Switch Supply circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 3
  3. (K977) MODE SELECT CIRCUIT SHORTED TO VOLTAGE Measure the voltage of the (K977) Mode Select circuit. Is there any voltage present? Yes Repair the (K977) Mode Select circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 4
  4. TRANSFER CASE SELECTOR SWITCH Turn the ignition off to the lock position Connect the Instrument Cluster C2 connector. Turn the ignition on, engine not running. With the scan tool under Data Display, read the TCASE (DTCM) Switch voltage. Is the voltage equal to 0 Volts? Yes Replace the Transfer Case Selector Switch in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 5
  5. (K977) MODE SELECT CIRCUIT OPEN Turn the ignition off to the lock position Measure the resistance of the (K977) Mode Select circuit between the Transfer Case Selector Switch harness connector and the Instrument Cluster C2 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (K977) Mode Select circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Go to step 6
  6. TRANSFER CASE SELECTOR SWITCH (Z973) GROUND CIRCUIT OPEN Measure the resistance between ground and the (Z973) Ground circuit. Is the resistance above 5.0 Ohms? Yes Repair the Transfer Case Selector Switch (Z973) ground circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  7. INTERMITTENT WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Test complete.
  1. When Monitored: With the ignition on.
  1. Set Condition: The Cluster detects low voltage on the Neutral Indicator Control Circuit.
Possible Causes
(G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN
(G95) 4WD NEUTRAL INDICATOR CIRCUIT SHORTED TO GROUND
TRANSFER CASE SELECTOR SWITCH
INSTRUMENT CLUSTER

Scheme 256

Scheme 256: Diagnostic Test

Scheme 257

Scheme 257
  1. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, clear the DTCs in the Instrument Cluster. Shift the Transfer Case into neutral for 30 seconds in accordance with the Service Information. With the scan tool, read the Instrument Cluster DTCs. Does this DTC reset? Yes Go to step 2 No Go to step 5
  2. (G95) 4WD NEUTRAL INDICATOR CIRCUIT RESISTANCE TO GROUND Turn the ignition off to the lock position Disconnect the Instrument Cluster C3 harness connector. Measure the resistance between ground and the (G95) 4WD Neutral Indicator circuit. Is the resistance below 5.0 Ohms? Yes Go to step 3 No Go to step 4
  3. (G95) 4WD NEUTRAL INDICATOR CIRCUIT SHORTED TO GROUND Disconnect the Transfer Case Selector Switch harness connector. Measure the resistance between ground and the (G95) 4WD Neutral Indicator circuit. Is the resistance below 5.0 Ohms? Yes Repair the (G95) 4WD Neutral Indicator circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Transfer Case Selector Switch in accordance with the Service information. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  4. (G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN Disconnect the Transfer Case Selector Switch harness connector. Measure the resistance of the (G95) 4WD Neutral Indicator circuit between the Transfer Case Selector Switch harness connector and the Instrument Cluster C3 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the open (G95) 4WD Neutral Indicator circuit. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Instrument Cluster in accordance with the Service information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  5. INTERMITTENT WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Test complete.
  1. When Monitored: With the ignition on.
  1. Set Condition: The Cluster detects high voltage on the Neutral Indicator Control Circuit.
Possible Causes
(G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN
(G95) 4WD NEUTRAL INDICATOR CIRCUIT SHORTED TO VOLTAGE
TRANSFER CASE SELECTOR SWITCH
INSTRUMENT CLUSTER

Scheme 258

Scheme 258: Diagnostic Test
  1. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, clear the DTCs in the Instrument Cluster. Shift the Transfer Case into neutral for 30 seconds in accordance with the Service Information. With the scan tool, read the Instrument Cluster DTCs. Does this DTC reset? Yes Go to step 2 No Go to step 5
  2. (G95) 4WD NEUTRAL INDICATOR CIRCUIT VOLTAGE Turn the ignition off to the lock position Disconnect the Instrument Cluster C3 harness connector. Ignition on, engine not running. Measure the voltage of the (G95) 4WD Neutral Indicator circuit. Is there any voltage present? Yes Go to step 3 No Go to step 4
  3. (G95) 4WD NEUTRAL INDICATOR CIRCUIT SHORTED TO VOLTAGE Turn the ignition off to the lock position Disconnect the Transfer Case Selector Switch harness connector. Ignition on, engine not running. Measure the voltage of the (G95) 4WD Neutral Indicator circuit. Is there any voltage present? Yes Repair the (G95) 4WD Neutral Indicator circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Transfer Case Selector Switch in accordance with the Service information. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  4. (G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN Disconnect the Transfer Case Selector Switch harness connector. Measure the resistance of the (G95) 4WD Neutral Indicator Control circuit between the Transfer Case Selector Switch harness connector and the Instrument Cluster C3 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the open (G95) 4WD Neutral Indicator circuit. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Replace the Instrument Cluster in accordance with the Service information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) .
  5. INTERMITTENT WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) . No Test complete.

Scheme 259

Scheme 259: Circuit Schematic
  1. When Monitored: With the ignition in the Unlock or Run position and the driver's foot applied to the brake pedal.
  1. Set Condition: The Instrument Cluster detects a low value on the BTSI Solenoid Control circuit.
Possible Causes
(B30) BTSI SOLENOID CONTROL CIRCUIT SHORTED TO THE (Z101) BTSI SOLENOID GROUND CIRCUIT
(B30) BTSI SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
TRANSMISSION UNLOCK SOLENOID (BTSI)
INSTRUMENT CLUSTER

Scheme 260

Scheme 260: Diagnostic Test

Scheme 261

Scheme 261

Scheme 262

Scheme 262
  1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTCs. Turn the ignition off, wait 10 seconds then turn the ignition on. Apply and release the brakes. With the scan tool, read DTCs. Does the scan tool display: P0930-BTSI CONTROL CIRCUIT LOW? Yes Go to step 2 No The condition that caused this code to set is not present at this time. Using the wiring diagram as a guide, inspect the wiring and connectors for an intermittent condition. Operate the system several times and recheck for active DTCs. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  2. CHECK THE (B30) BTSI SOLENOID CONTROL CIRCUIT FOR A SHORT TO THE (Z101) BTSI SOLENOID GROUND CIRCUIT. Turn the ignition off. Disconnect the BTSI solenoid harness connector. Disconnect the Instrument Cluster C1 harness connector. Measure the resistance between the (B30) BTSI Solenoid Control Circuit and the (Z101) BTSI Solenoid Ground Circuit. Is the resistance below 5.0 ohms? Yes Repair the (B30) BTSI Solenoid Control circuit for a short to the (Z101) BTSI Solenoid Ground Circuit. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Go to step 3
  3. CHECK THE (B30) BTSI SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (B30) BTSI Solenoid Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (B30) BTSI Solenoid Control circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Go to step 4
  4. CHECK OPERATION OF THE BTSI SOLENOID Reconnect the Instrument Cluster C1 harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, check the BTSI Solenoid Control circuit. With the scan tool, actuate the BTSI Solenoid. Does the test light illuminate brightly? Yes Replace the Transmission Unlock (BTSI) Solenoid in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)

Scheme 263

Scheme 263: Circuit Schematic
  1. When Monitored: With the ignition in the Unlock or Run position and the driver's foot applied to the brake pedal.
  1. Set Condition: The Instrument Cluster detects a high value on the BTSI Solenoid Control circuit.
Possible Causes
(Z101) BTSI SOLENOID GROUND CIRCUIT OPEN
(B30) BTSI SOLENOID CONTROL CIRCUIT OPEN
TRANSMISSION UNLOCK SOLENOID (BTSI)
INSTRUMENT CLUSTER

Scheme 264

Scheme 264: Diagnostic Test

Scheme 265

Scheme 265

Scheme 266

Scheme 266
  1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTCs. Turn the ignition off, wait 10 seconds then turn the ignition on. Apply and release the brakes. With the scan tool, read DTCs. Does the scan tool display: P0931-BTSI CONTROL CIRCUIT HIGH? Yes Go to step 2 No The condition that caused this code to set is not present at this time. Using the wiring diagram as a guide, inspect the wiring and connectors for an intermittent condition. Operate the system several times and recheck for active DTCs. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  2. CHECK THE (Z101) BTSI SOLENOID GROUND CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the BTSI Solenoid harness connector. Measure the resistance between ground and the (Z101) BTSI Solenoid Ground circuit. Is the resistance above 5.0 ohms? Yes Repair the (Z101) BTSI Solenoid Ground circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Go to step 3
  3. CHECK THE (B30) BTSI SOLENOID CONTROL CIRCUIT FOR AN OPEN Disconnect the Instrument Cluster C1 harness connector. Measure the resistance of the (B30) BTSI Solenoid Control circuit between the BTSI Solenoid harness connector and the Instrument Cluster C1 harness connector. Is the resistance above 5.0 ohms? Yes Repair the (B30) BTSI Solenoid Control circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Go to step 4
  4. CHECK THE OPERATION OF THE BTSI SOLENOID Reconnect the Instrument Cluster C1 harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, check the (B30) BTSI Solenoid Control circuit. With the scan tool, actuate the BTSI Solenoid. Does the test light illuminate brightly? Yes Replace the Transmission Unlock (BTSI) Solenoid in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)

Scheme 267

Scheme 267: Circuit Schematic
  1. When Monitored: Continuously
  1. Set Condition: Whenever the Can B Bus (+) or B Bus (-) circuit is open, shorted to voltage or shorted to ground, this code will set.
Possible Causes
CAN B BUS DTCs IN FRONT CONTROL MODULE
(D54) CAN B BUS (-) CIRCUIT OPEN
(D55) CAN B BUS (+) CIRCUIT OPEN
INSTRUMENT CLUSTER

Scheme 268

Scheme 268: Diagnostic Test

Scheme 269

Scheme 269
  1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTCs Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display U0019-CAN B BUS CIRCUIT? Yes Go to step 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 «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  2. CHECK FRONT CONTROL MODULE DTCs With the scan tool, read Front Control Module DTCs Does the scan tool display any CAN B BUS DTCs - ACTIVE? Yes Go to and perform the appropriate diagnostic procedure (See «DIAGNOSTIC CODE INDEX»(ref-352642) ). No Go to step 3
  3. CAN B BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the Instrument Cluster C2 harness connector. Disconnect the Front Control Module C1 harness connector. Measure the resistance of the (D55) Can B Bus (+) circuit between the Front Control Module C1 harness connector and the Instrument Cluster C2 harness connector. Is the resistance below 2.0 ohms? Yes Go to step 4 No Repair the Can B Bus (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)
  4. CAN B BUS (-) CIRCUIT OPEN Measure the resistance of the (D54) Can B Bus (-) circuit between the Front Control Module C1 harness connector and the Instrument Cluster C2 harness connector. Is the resistance below 2.0 ohms? Yes Replace the Instrument Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000) No Repair the Can B Bus (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure»(ref-352654-S37713291802010010600000)

Scheme 270

Scheme 270: U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE
  1. When Monitored: Continuously when the ignition is on. Battery voltage between 10 and 16 volts. Ignition Off Draw (IOD) fuse installed. Front Control Module (FCM) is configured correctly.
  1. Set Condition: Bus messages not received from the FCM for approximately two to five seconds.
Possible Causes
BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
FCM
FCM POWER AND GROUND
MODULE THAT SET THIS DTC
  1. When Monitored: Continuously when the ignition is on. Battery voltage between 10 and 16 volts. Ignition Off Draw (IOD) fuse installed. Front Control Module (FCM) is configured correctly.
  1. Set Condition: Bus messages not received from the ORC for approximately two to five seconds.
Possible Causes
BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
ORC
ORC POWER AND GROUND
MODULE THAT SET THIS DTC
  1. When Monitored: Continuously when the ignition is on. Battery voltage between 10 and 16 volts. Ignition Off Draw (IOD) fuse installed. Front Control Module (FCM) is configured correctly.
  1. Set Condition: Bus messages not received from the EOM for approximately two to five seconds.
Possible Causes
BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
EOM
EOM POWER AND GROUND
MODULE THAT SET THIS DTC
  1. When Monitored: Continuously when the ignition is on. Battery voltage between 10 and 16 volts. Ignition Off Draw (IOD) fuse installed. Front Control Module (FCM) is configured correctly.
  1. Set Condition: Bus messages not received from the WCM for approximately two to five seconds.
Possible Causes
BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
WCM
WCM POWER AND GROUND
MODULE THAT SET THIS DTC
  1. When Monitored: Continuously when the ignition is on. Battery voltage between 10 and 16 volts. Ignition Off Draw (IOD) fuse installed. Front Control Module (FCM) is configured correctly.
  1. Set Condition: Bus messages not received from the Radio for approximately two to five seconds.
Possible Causes
BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
RADIO
RADIO POWER AND GROUND
MODULE THAT SET THIS DTC