Cabin Compartment Node (Ccn) - Electrical Diagnostics: Other Dodge Caliber I рестайлинг

When Monitored

With the ignition on, during the heated seat operation.

Set Condition

This code sets immediately when the Heated Seat Module (HSM) detects that the (P187) Left Seat Heater B(+) Driver circuit is shorted to ground.

Possible Causes

Scheme 36

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Scheme 38

1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, record and erase Diagnostic Trouble Codes (DTCs). Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension. Attempt to reproduce condition by adjusting the seat. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
2. CHECK (P187) LEFT SEAT HEATER B(+) DRIVER CIRCUIT IN BODY HARNESS FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Left Seat Cushion Heater harness connector. NOTE: Check connectors. Clean and repair as necessary. Turn the ignition on. With the scan tool, erase DTCs. Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTCs. Does the scan tool display this DTC as active? Yes Go To 3 . No Go To 4 .
3. CHECK (P187) LEFT SEAT HEATER B(+) DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the HSM harness connector. NOTE: Check connectors. Clean and repair as necessary. Measure the resistance of the (P187) Left Seat Heater B(+) Driver circuit between ground and the HSM harness connector. Is the resistance below 10K Ohms? Yes Repair the (P187) Left Seat Heater B(+) Driver circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 4 .
4. CHECK LEFT SEAT CUSHION HEATER FOR A SHORT TO GROUND Turn the ignition off. Reconnect the Left Seat Cushion Heater harness connector. Disconnect the Left Seat Back Heater harness connector. NOTE: Check connectors. Clean and repair as necessary. Turn the ignition on. With the scan tool, erase DTCs. Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTCs. Does the scan tool display this DTC as active? Yes Replace the shorted Left Seat Cushion Heater Element in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Left Seat Back Heater Element in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

With the ignition on, during the heated seat operation.

This code sets immediately when the Heated Seat Module (HSM) detects that the (P187) Left Seat Heater B(+) Driver circuit is open.

Scheme 39

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Scheme 42

1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, record and erase Diagnostic Trouble Codes (DTCs). Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension. Attempt to reproduce condition by adjusting the seat. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
2. CHECK FOR OPEN SEAT HEATER ELEMENTS Turn the ignition off. Disconnect the Left Seat Cushion Heater harness connector. NOTE: Check connectors. Clean and repair as necessary. Measure the total resistance of the Cushion and Seat Back Heater Elements between the (P187) Left Seat Heater B(+) Driver circuit and the (Z905) Ground circuit at the Left Seat Cushion Heater connector (component side). Is the total resistance 2.5 to 3.5 Ohms (+ or - 0.5 of an Ohm)? Yes Go To 3 . No Go To 5 .
3. CHECK (Z903) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z903) Ground circuit at the Left Seat Cushion Heater harness connector (harness side). 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 Go To 4 . No Repair the (Z903) Ground circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. CHECK (P187) LEFT SEAT HEATER B(+) DRIVER CIRCUIT FOR AN OPEN IN BODY HARNESS Disconnect the HSM harness connector. NOTE: Check connectors. Clean and repair as necessary. Measure the resistance of the (P187) Left Seat Heater B(+) Driver circuit between the HSM harness connector and the Left Seat Cushion Heater harness connector (harness side). Is the resistance below 5.0 Ohms? Yes Replace the Heated Seat Module (HSM) in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the (P187) Left Seat Heater B(+) Driver circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
5. CHECK LEFT SEAT BACK HEATER ELEMENT FOR AN OPEN Disconnect the Left Seat Back Heater harness connector. NOTE: Check connectors. Clean and repair as necessary. Measure the resistance of the Left Seat Back Heater Element between the (P187) Left Seat Heater B(+) Driver and the (Z905) Ground circuit at the Left Seat Back Heater connector (component side). Is the resistance above 6.0 Ohms? Yes Replace the Seat Back Heater Element in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Seat Cushion Heater Element in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

With the ignition on, during the heated seat operation.

This code sets immediately when the Heated Seat Module (HSM) detects that the (P188) Right Seat Heater B(+) Driver circuit is shorted to ground.

Scheme 43

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1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, record and erase Diagnostic Trouble Codes (DTCs). Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension. Attempt to reproduce condition by adjusting the seat. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
2. CHECK (P188) RIGHT SEAT HEATER B(+) DRIVER CIRCUIT IN BODY HARNESS FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Right Seat Cushion Heater harness connector. NOTE: Check connectors. Clean and repair as necessary. Turn the ignition on. With the scan tool, erase DTCs. Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTCs. Is DTC B1096-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT LOW active? Yes Go To 3 . No Go To 4 .
3. CHECK (P188) RIGHT SEAT HEATER B(+) DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the HSM harness connector. NOTE: Check connectors. Clean and repair as necessary. Measure the resistance of the (P188) Right Seat Heater B(+) Driver circuit between ground and the HSM harness connector. Is the resistance below 10K Ohms? Yes Repair the (P188) Right Seat Heater B(+) Driver circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 4 .
4. CHECK RIGHT SEAT CUSHION HEATER FOR A SHORT TO GROUND Turn the ignition off. Reconnect the Right Seat Cushion Heater harness connector. Disconnect the Right Seat Back Heater harness connector. NOTE: Check connectors. Clean and repair as necessary. Turn the ignition on. With the scan tool, erase DTCs. Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTCs. Is DTC B1096-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT LOW active? Yes Replace the shorted Right Seat Cushion Heater Element in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Right Seat Back Heater Element in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

With the ignition on, during the heated seat operation.

This code sets immediately when the Heated Seat Module (HSM) detects that the (P188) Right Seat Heater B(+) Driver circuit is open.

Scheme 46

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1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, record and erase Diagnostic Trouble Codes (DTCs). Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension. Attempt to reproduce condition by adjusting the seat. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
2. CHECK FOR OPEN SEAT HEATER ELEMENTS Turn the ignition off. Disconnect the Right Seat Cushion Heater harness connector. NOTE: Check connectors. Clean and repair as necessary. Measure the total resistance of the Cushion and Seat Back Heater Elements between (P188) Right Seat Heater B(+) Driver circuit and the (Z908) Ground circuit at the Right Seat Cushion Heater connector (component side). Is the total resistance 2.5 to 3.5 Ohms (+ or - 0.5 of an Ohm)? Yes Go To 3 . No Go To 5 .
3. CHECK (Z908) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuit at the Right Seat Cushion Heater harness connector (harness side). 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 Go To 4 . No Repair the (Z908) Ground circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. CHECK (P188) RIGHT SEAT HEATER B(+) DRIVER CIRCUIT FOR AN OPEN IN BODY HARNESS Disconnect the HSM harness connector. NOTE: Check connectors. Clean and repair as necessary. Measure the resistance of the (P188) Right Seat Heater B(+) Driver circuit between the HSM harness connector and the Right Seat Cushion Heater harness connector (harness side). Is the resistance below 5.0 Ohms? Yes Replace the Heated Seat Module (HSM) in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the (P188) Right Seat Heater B(+) Driver circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
5. CHECK RIGHT SEAT BACK HEATER ELEMENT FOR AN OPEN Disconnect the Right Seat Back Heater harness connector. NOTE: Check connectors. Clean and repair as necessary. Measure the resistance of the Right Seat Back Heater Element between the (P188) Right Seat Heater B(+) Driver and the (Z908) Ground circuit at the Right Seat Back Heater connector (component side). Is the resistance above 6.0 Ohms? Yes Replace the Seat Back Heater Element in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Seat Cushion Heater Element in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

B10BB-LEFT HEATED SEAT SWITCH INPUT CIRCUIT STUCK

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

With the ignition on.

If the Cluster (CCN) senses the Left Heated Seat switch input for more than 10 seconds.

B10BC-RIGHT HEATED SEAT SWITCH INPUT CIRCUIT STUCK

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

With the ignition on.

If the Cluster (CCN) senses the Right Heated Seat switch input for more than 10 seconds.

B123F-MENU SWITCH STUCK

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

With the ignition on.

The Cluster detects the Menu Switch active for greater than 20 seconds.

With the ignition on.

Internal Compass Module failure detected.

With the ignition on.

The Cluster detects the TRIP/TOGGLE Switch active for greater than 20 seconds.

With the Radio on.

The Cluster Detects the Radio Control MUX (multiplex) circuit is open or shorted to voltage.

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1. CHECK FOR ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set. Turn the ignition on. With the scan tool, read the active DTCs. Does the scan tool display this DTC 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 correct pin tension.
2. (X20) RADIO CONTROL MUX CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Cluster C3 harness connector. Turn the ignition on. Measure the voltage on the (X20) Radio Control MUX circuit. Is the voltage above 10.0 volts? Yes Repair the (X20) Radio Control MUX circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 3 .
3. LEFT REMOTE RADIO SWITCH Turn the ignition off. Reconnect the Cluster C3 harness connector. Disconnect the Left Remote Radio Switch harness connector. Connect a 5 Amp fused jumper wire between cavity 1 and cavity 2 in 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 below 1.0 volt? Yes Replace the Left Remote Radio Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 4 .
4. RIGHT REMOTE RADIO SWITCH Turn the ignition off. Reconnect the Left Remote Radio Switch harness connector. Disconnect the Right Remote Radio Switch harness connector. Connect a 5 Amp fused jumper wire between cavity 1 and cavity 2 in 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 below 1.0 volt? Yes Replace the Right Remote Radio Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 5 .
5. (X20) RADIO CONTROL MUX CIRCUIT OPEN Turn the ignition off. Disconnect the Left Remote Radio Switch harness connector. Disconnect the Cluster C3 harness connector. Measure the resistance of the (X20) Radio Control MUX circuit. Are the resistances above 100.0 Ohms? Yes Go To 6 . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
6. (X20) RADIO CONTROL MUX CIRCUIT OPEN BETWEEN REMOTE RADIO SWITCHES AND CLOCKSPRING Turn the ignition off. Disconnect the Clockspring C8 harness connector. Measure the resistance of the (X20) Radio Control MUX circuit. Are the resistances above 5.0 Ohms? Yes Repair the (X20) Radio Control MUX circuit for a open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 7 .
7. (X20) RADIO CONTROL MUX CIRCUIT OPEN BETWEEN CLOCKSPRING AND CLUSTER Disconnect the Clockspring C2 harness connector. Measure the resistance of the (X20) Radio Control MUX circuit. Is the resistance above 5.0 Ohms? Yes Repair the (X20) Radio Control MUX circuit for a open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Clockspring in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

With the ignition in any position except off.

The Cluster detects a stuck switch state on the (X20) Radio Control MUX (multiplex) circuit for more than 30 seconds.

Scheme 54

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1. CHECK FOR ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set. Turn the ignition on. Using the scan tool, read the active DTCs. Does the scan tool display this DTC 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 correct pin tension.
2. LEFT REMOTE RADIO SWITCH Turn the ignition off. Disconnect the Left Remote Radio Switch harness connector. Turn the ignition on. Using 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 «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 3 .
3. RIGHT REMOTE RADIO SWITCH Turn the ignition off. Disconnect the Right Remote Radio Switch harness connector. Turn the ignition on. Using 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 «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 4 .
4. (X20) RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the Cluster C3 harness connector. Measure the resistance between ground and the (X20) Radio Control MUX circuit. Is the resistance below 5.0 Ohms? Yes Go To 5 . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
5. (X20) RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND BETWEEN THE CLUSTER AND CLOCKSPRING Disconnect the Clockspring C2 harness connector. Measure the resistance between ground and the (X20) Radio Control MUX circuit. Is the resistance below 5.0 Ohms? Yes Repair the (X20) Radio Control MUX circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 6 .
6. (X20) RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND BETWEEN THE CLOCKSPRING AND THE REMOTE RADIO SWITCHES Disconnect the Clockspring C8 harness connector. Measure the resistance between ground and the (X20) Radio Control MUX circuit. Is the resistance below 5.0 Ohms? Yes Repair the (X20) Radio Control MUX circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Clockspring in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Scheme 57

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

Continuously

When the Cluster detects a short to battery on the Control circuit.

Scheme 58

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1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, read DTCs. Does the scan tool read: B161A-COURTESY/DOME LAMP CONTROL CIRCUIT? 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.
2. CHECK THE (M24) COURTESY LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Cluster C2 harness connector. Measure the resistance between the (M24) Courtesy Lamp Driver circuit and ground. Is the resistance below 5.0 Ohms? Yes Repair the short to ground in the (M24) Courtesy Lamp Driver circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 3 .
3. CHECK THE (M24) COURTESY LAMPS DRIVER CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Dome Lamp harness connector. Measure the resistance of the (M24) Courtesy Lamp Driver circuit between the Cluster C2 and Dome Lamp harness connectors. Is the resistance above 5.0 Ohms? Yes Repair the open in the (M24) Courtesy Lamp Driver circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Scheme 60

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

With the ignition on.

When the Cluster detects an open or a short to ground driver circuit.

Scheme 61

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1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display this DTC as active? Yes Go To 4 . 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.
2. CHECK THE VOLTAGE OF THE (M27) READING/RAIL LAMPS DRIVER CIRCUIT Turn the ignition off. Disconnect the Electronic Overhead Module C1 harness connector. Turn the ignition on. Measure the voltage of the (M27) Reading/Rail Lamps Driver circuit. Is the voltage above 10.0 volts? Yes Go To 3 . No Go To 4 .
3. CHECK THE (Z903) GROUND CIRCUIT Measure the resistance between ground and the (Z903) Ground circuit. Is the resistance below 10K Ohms? Yes Replace the Electronic Overhead Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the open in the (Z903) Ground Circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. CHECK THE (M27) READING/RAIL LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND Disconnect the Cluster C2 harness connector. Measure the resistance between ground and the (M27) Reading/Rail Lamps Driver circuit. Is the resistance below 10K Ohms? Yes Repair the short to ground in the (M27) Reading/Rail Lamps Driver circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 5 .
5. CHECK THE (M27) READING/RAIL LAMPS DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (M27) Reading/Rail Lamps Driver circuit. Is the resistance above 5.0 Ohms? Yes Repair the open in the (M27) Reading/Rail Lamps Driver circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

B168F-FRONT FOG LAMP SWITCH CIRCUIT

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

With the ignition on.

The Cluster detects the Front Fog Lamp Switch Input Circuit voltage is less than the expected value.

With the ignition on.

The Cluster detects the Headlamp Leveling Switch is active for greater than 20 seconds.

B178E-HEADLAMP SWITCH INPUT CIRCUIT

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

With the ignition on.

The Cluster detects the Headlamp Switch function inoperative.

B178F-TURN SWITCH INPUT CIRCUIT

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

With the ignition on.

The Cluster detects the Turn Signal function inoperative.

Scheme 65

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Scheme 69

1. TEST THE DOOR LOCK SWITCH NOTE: The graphic for this step shows the connector for terminal reference only. Turn the ignition off. Disconnect the Driver Window/Door Lock Switch C2 connector. Connect an ohmmeter between terminals number 3 and 8 of the switch (not the connector). With the switch in the neutral position, the resistance should be greater than 1, 000, 000 ohms (open circuit) While holding the switch in the Lock position, the resistance should be 330 ohms (+/- 33 ohms). While holding the switch in the Unlock position, the resistance should be 100 ohms (+/- 10 ohms). Does the switch pass all three tests? No Replace the Driver Window/Door Lock Switch. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . Yes Go To 2 .
2. (Z961) GROUND CIRCUIT OPEN Turn the ignition on. Using a 12-volt test light connected to 12-volts, check the (Z961) Ground circuit in the Driver Window/Door Lock Switch C2 connector. Does the test light illuminate brightly No Repair the (Z961) Ground circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . Yes Go To 3 .
3. (P697) DOOR LOCK SWITCH MUX CIRCUIT SHORT TO BATTERY Measure the voltage between the (P697) Door Lock Switch MUX circuit and ground. Is the voltage above 5.2 volts? Yes Repair the (P697) Door Lock Switch MUX circuit for a short to battery. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 4 .
4. (P697) DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Cluster C2 connector. Measure the resistance between ground and the (P697) Door Lock Switch MUX circuit. Is the resistance below 10, 000 ohms? Yes Repair the (P697) Door Lock Switch MUX circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 5 .
5. (P697) DOOR LOCK SWITCH MUX CIRCUIT OPEN Measure the resistance of the (P697) Door Lock Switch MUX circuit between the Cluster C2 connector and the Driver Window/Door Lock Switch connector. Is the resistance below 5.0 ohms? No Repair the (P697) Door Lock Switch MUX circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . Yes Replace the Instrument Cluster in accordance with Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Continuously

When the Door Lock Switch MUX circuit is below 0.15 volts for over 10 seconds.

Scheme 70

1. TEST FOR INTERMITTENT CONDITION With the scan tool, record and erase DTCs 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 DTCs. Does the scan tool display B1801-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW? 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 «Standard Procedure»(ref-463955-S29207906092012041600000) .
2. DOOR LOCK SWITCH SHORTED With the scan tool, erase DTCs. Disconnect the Driver Window/Door Lock Switch C2 connector. With the scan tool, read DTCs. Does the scan tool display B1801-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW? No Replace the Driver Window/Door Lock Switch. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . Yes Go To 3 .
3. (P697) DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Cluster C2 connector. Measure the resistance between ground and the (P697) Door Lock Switch MUX circuit. Is the resistance below 10, 000 ohms? Yes Repair the (P697) Door Lock Switch MUX circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Instrument Cluster in accordance with Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Scheme 71

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

Continuously

When the Door Lock Switch MUX circuit is below 0.15 volts for over 10 seconds.

Scheme 72

Scheme 73

1. CHECK FOR AN ACTIVE DTC Turn the ignition on. Operate the Passenger Door Lock Switch in all positions several times. With the scan tool, read the DTCs. Does the scan tool display this DTC 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 correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
2. DOOR LOCK SWITCH SHORTED With the scan tool, erase the DTCs. Disconnect the Passenger Window/Door Lock Switch connector. With the scan tool, read the DTCs. Does the scan tool display this DTC as active? Yes Go To 3 . No Replace the Passenger Window/Door Lock Switch. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
3. (P696) PASSENGER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Cluster C2 connector. Measure the resistance between ground and the (P696) Passenger Door Lock Switch MUX circuit. Is the resistance below 10K Ohms? Yes Repair the (P696) Passenger Door Lock Switch MUX circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Continuously

When the Driver Door Lock Switch MUX circuit is between 0.8 and 3.5 volts for over 10 seconds.

With ignition on.

If the Heated Seat Module (HSM) detects voltage under 10 volts on the (F937) Fused Ignition Switch Output (Run) circuit.

Scheme 74

1. CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCs) Turn the ignition on. With the scan tool, read Powertrain Control Module (PCM) DTCs. Are there any Charging System DTCs set in the PCM? Yes Refer to «Diagnosis and Testing»(ref-463919-S23742926062012041600000) for Charging System diagnostic procedures. . No Go To 2 .
2. VERIFY DTC B2181-HEATED SEAT MODULE POWER SUPPLY LOW IS ACTIVE With the scan tool, record and erase DTCs. Turn the ignition off. Start the engine and let it run for one minute. With the scan tool, read DTCs. Does the scan tool display this DTC as active? 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. Attempt to reproduce condition by adjusting the seat. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
3. CHECK (F937) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT VOLTAGE Turn the ignition off. Disconnect the HSM harness connector. NOTE: Check connectors. Clean and repair as necessary. Start the engine and let idle. Measure the voltage of the (F937) Fused Ignition Switch Output (Run) circuit between the HSM connector and ground and compare it to the voltage at the vehicle battery. Is the voltage measured at the HSM connector the same as the voltage measured at the battery? Yes Replace the Heated Seat Module (HSM) in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the (F937) Fused Ignition Switch Output (Run) circuit for the cause of the low voltage condition at the HSM. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

With ignition on.

If the Heated Seat Module detects voltage over 16.0 volts on the on the (F937) Fused Ignition Switch Output (Run) circuit.

B225C-COMPASS MODULE INTERNAL

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

With the ignition on.

The Compass Module detects an internal failure.

With the ignition on.

The Cluster detects the Wiper Mode Switch function is inoperative.

Continuously.

The Cluster senses that the Horn switch is in the Set position for greater than 50 seconds.

Scheme 75

1. CHECK FOR AN ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set. Turn the ignition on. Operate the Horn Switch several times. Wait 1 minute. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension.
2. HORN SWITCH WARNING: Turn the ignition off, disconnect the battery and wait two minutes before proceeding. WARNING: Do not place an intact undeployed airbag face down on a hard surface, the airbag will propel into the air if accidentally deployed, and could results in serious or fatal injury. Remove the Driver Airbag in accordance with the Service information. Disconnect the Horn Switch harness connector. NOTE: Before proceeding, thoroughly inspect the wiring harness and connectors between the Horn Switch for a short to ground or to any other circuit. With the scan tool, read DTCs. Does the scan tool display this DTC as active? Yes Go To 3 . No Replace the Horn Switch in accordance with the Service Information. Perform BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
3. CLOCKSPRING Disconnect the Clockspring C2 harness connector. Wait 1 minute. With the scan tool, read DTCs. Does the scan tool display this DTC as active? Yes Go To 4 . No Replace the Clockspring in accordance with the Service Information. Perform BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. (X3) HORN SWITCH SIGNAL CIRCUIT SHORTED TO GROUND Disconnect the Cluster C3 connector. Measure the resistance between ground and the (X3) Horn Switch circuit. Is the resistance below 5.0 ohms? Yes Repair the short to ground in the (X3) Horn Switch circuit. Perform BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Cluster in accordance with the Service Information. Perform BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

With the ignition on.

The Cluster detects the Flash to Pass function inoperative.

Continuously with the ignition on.

The Cluster senses that the Washer Switch is in the Set position for greater than 50 seconds.

Continuously with the ignition on.

The Cluster senses that the Mist Switch is in the Set position for greater than 50 seconds.

Continuously with the ignition on.

The Cluster senses that the Rear Wiper Switch is in the Set position for greater than 50 seconds.

Continuously with the ignition on.

The Cluster senses that the Rear Washer Switch is in the Set position for greater than 50 seconds.

With the ignition on.

The Cluster detects the Flash to Pass function inoperative.

With the ignition on.

The Cluster detects the TRAC/ESP Off Switch active for greater than 20 seconds.

Note. The Electronic Stability Control (ESC) may also be referred to as Electronic Stability Program (ESP) depending on the vehicle model year and configuration.

With the ignition on.

The Cluster detects that the Fuel Level Sensor input voltage is below the minimum acceptable value.

Scheme 76

1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension.
2. FUEL PUMP MODULE Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Turn the ignition on. Wait 30 seconds. With the scan tool, read DTCs Does the scan tool display this DTC as active? Yes Go To 3 . No Replace the Fuel Pump Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
3. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the Cluster C2 harness connector. Measure the resistance between ground and the (N4) Fuel Level Signal 1 circuit in the Fuel Pump Module harness connector. Is the resistance below 10K Ohms? Yes Repair the short to ground in the (N4) Fuel Level Signal 1 circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

With the ignition on.

The Cluster detects that the Fuel Level Sensor input voltage is above the maximum acceptable value.

Scheme 77

Scheme 78

Scheme 79

1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension.
2. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Disconnect the Cluster C2 harness connector. Turn the ignition on. Measure the voltage of the (N4) Fuel Level Signal 1 circuit in the Fuel Pump Module harness connector. Is there any voltage present? Yes Repair the (N4) Fuel Level Signal 1 circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 3 .
3. FUEL PUMP MODULE Turn the ignition off. Reconnect the Cluster C2 harness connector. Connect a jumper wire between the (N4) Fuel Level Signal 1 circuit and the (Z906) Ground in the Fuel Pump Module harness connector. Turn the ignition on. With the scan tool, read DTCs Does the scan tool display this DTC as active? Yes Go To 4 . No Replace the Fuel Pump Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. (N4) FUEL LEVEL SIGNAL 1 OPEN OR HIGH RESISTANCE Turn the ignition off. Disconnect the Cluster C2 harness connector. Measure the resistance of the (N4) Fuel Level Signal 1 circuit between the Fuel Pump Module harness connector and the Cluster C2 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (N4) Fuel Level Signal 1 circuit for an open circuit or high resistance. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 5 .
5. (Z906) GROUND CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance between ground and the (Z906) Ground circuit in the Fuel Pump Module harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (Z906) Ground circuit for an open circuit or high resistance. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the TIPM for approximately two to five seconds.

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Occupant Restraint Controller (ORC) for approximately two to five seconds.

With the ignition on.

The Cluster does not receive information from the Compass Module.

Scheme 80

Scheme 81

Scheme 82

Scheme 83

1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display: U0161-LOST COMMUNICATION WITH COMPASS MODULE? 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.
2. (D506) LIN BUS CIRCUIT OPEN Turn the ignition off. Disconnect the Compass Module harness connector. Turn the ignition on. Measure the voltage of the (D506) LIN BUS circuit. Is the voltage above 5.0 volts? Yes Go To 4 . No Go To 3 .
3. (D506) LIN BUS CIRCUIT OPEN Turn the ignition off. Disconnect the Cluster C3 harness connector. Measure the resistance of the (D506) LIN BUS circuit. Is the resistance below 5.0 Ohms? Yes Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the open in the (D506) LIN BUS circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. (F929) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN Measure the voltage of the (F929) Fused Ignition Switch Output (RUN) circuit. Is the voltage above 10.0 volts? Yes Go To 5 . No Repair the open in the (F929) Fused Ignition Switch Output (RUN) circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
5. (Z903) GROUND CIRCUIT OPEN Measure the resistance between ground and the (Z903) Ground circuit. Is the resistance below 10K Ohms? Yes Replace the Compass Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the open in the (Z903) Ground circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the A/C Heater Control for approximately two to five seconds.

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Intrusion Transceiver Control Module for approximately two to five seconds.

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Wireless Control Module (WCM) for approximately two to five seconds.

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Radio for approximately two to five seconds.

Continuously when the ignition is on.

The battery voltage is between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Satellite Receiver (SDAR) for approximately two to five seconds.

Continuously when the ignition is on.

The battery voltage is between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Hands Free Module (HFM) for approximately two to five seconds.

With the ignition on.

The Cluster does not receive information from the Heated Seats Module.

Scheme 84

Scheme 85

Scheme 86

1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
2. CHECK POWER TO HEATED SEATS MODULE NOTE: Check the related TIPM fuse. Repair if necessary. Turn the ignition off. Disconnect the Heated Seats Module harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, check the (F937) Fused Ignition Switch Output (Run) circuit at the Heated Seat Module harness connector. NOTE: 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 Go To 3 . No Repair the open in the (F937) Fused Ignition Switch Output (Run) circuit. Inspect the related fuse. If the fuse is open, check the circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
3. CHECK (D506) LIN BUS CIRCUIT VOLTAGE TO HEATED SEATS MODULE Measure the voltage of the (D506) LIN BUS circuit between the Heated Seats Module harness connector and ground. Is the voltage above 5.0 volts? Yes Go To 4 . No Repair the open in the (D506) LIN BUS circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. CHECK (Z909) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12 volts, check the (Z909) Ground circuit at the Heated Seats Module harness connector. NOTE: 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 Heated Seats Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the (Z909) ground circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Scheme 87

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

With the ignition on.

LIN 1 Bus Performance.

Scheme 88

Scheme 89

1. CHECK FOR AN ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display: U1008-LIN 1 BUS? 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.
2. SHORTED LIN BUS COMPONENT NOTE: After disconnecting each component, check DTCs with the scan tool. Turn the ignition on. Disconnect the Switch Bank Module harness connector. Disconnect the Remote Compass Module harness connector. Disconnect the Heated Seat Module harness connector. Disconnect the Left Multifinction Switch C1 harness connector. With each component disconnected, did the DTC U1008-LIN 1 BUS change from active to stored? Yes Replace the component that caused the DTC U1008-LIN 1 BUS change from active to stored. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 3 .
3. (D506) LIN BUS CIRCUIT OPEN Turn the ignition off. Disconnect the Cluster C3 harness connector. Disconnect the Switch Bank harness connector. Measure the resistance of the (D506) LIN Bus circuit. Is the resistance above 10K Ohms? Yes Repair the open in the (D506) LIN Bus circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Go To 4 .
4. (D506) LIN BUS CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance to ground on the (D506) LIN Bus circuit. Is the resistance below 10K Ohms? Yes Repair the short to ground (D506) LIN Bus circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Replace the Cluster in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Scheme 90

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

With the ignition on.

The Cluster does not receive information from the Switch Bank Module.

Scheme 91

Scheme 92

Scheme 93

1. CHECK FOR AN ACTIVE DTC Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display: U113B-LOST COMMUNICATION WITH SWITCH BANK MODULE? 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.
2. (D506) LIN BUS CIRCUIT OPEN Turn the ignition off. Disconnect the Switch Bank harness connector. Turn the ignition on. Measure the voltage of the (D506) LIN BUS circuit. Is the voltage above 5.0 volts? Yes Go To 3 . No Repair the (D506) LIN BUS circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
3. (A935) FUSED B+ CIRCUIT OPEN Measure the voltage of the (A935) Fused B+ circuit. Is the voltage above 10.0 volts? Yes Go To 4 . No Repair the (A935) Fused B+ circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. (Z908) GROUND CIRCUIT OPEN Measure the resistance between ground and the (Z908) Ground circuit. Is the resistance below 10K Ohms? Yes Replace the Switch Bank in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the (Z908) Ground circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .

Scheme 94

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

With the ignition on.

The Cluster does not receive any LIN Bus messages from the Left Multifunction Switch.

Scheme 95

Scheme 96

Scheme 97

Scheme 98

1. CHECK FOR AN ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display this DTC 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 correct pin tension.
2. (D506) LIN BUS CIRCUIT OPEN Turn the ignition off. Disconnect the Left Multifunction Switch C1 harness connector. Turn the ignition on. Measure the voltage of the (D506) LIN BUS circuit. Is the voltage above 5.0 volts? Yes Go To 3 . No Repair the open in the (D506) LIN BUS circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
3. (F202) IGNITION SWITCH OUTPUT (RUN/START) CIRCUIT OPEN Measure the voltage of the (F202) Ignition Switch Output (RUN/START) circuit. Is the voltage above 10.0 volts? Yes Go To 4 . No Repair the open in the (F202) Ignition Switch Output (RUN/START) circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
4. (A411) FUSED B(+) (I.O.D.) CIRCUIT OPEN Measure the voltage of the (A411) Fused B(+) (I.O.D.) circuit. Is the voltage above 10.0 volts? Yes Go To 5 . No Repair the open in the (A411) Fused B(+) (I.O.D.) circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .
5. (Z903) GROUND CIRCUIT OPEN Measure the resistance between ground and the (Z903) Ground circuit. Is the resistance below 10K Ohms? Yes Replace the Left Multifunction Switch in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) . No Repair the open in the (Z903) Ground circuit. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-463955-S29207906092012041600000) .