Inspection and Verification
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage. VISUAL INSPECTION CHART Electrical Smart Junction Box (SJB) fuse(s): 9 (15A) 10 (15A) 14 (10A) 25 (10A) Wiring, terminals or connectors Ambient lighting switch (if equipped) Bulb(s) Courtesy lamps Map lamps Puddle lamps Luggage compartment lamp Vanity lamps Overhead console Instrument panel dimmer switch SJB
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
- If the scan tool does not communicate with the VCM : Check the VCM connection to the vehicle. Check the scan tool connection to the VCM . Refer to «MODULE COMMUNICATIONS NETWORK»(ref-355713) , No Power To The Scan Tool, to diagnose no power to the scan tool.
- If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(ref-355713) to diagnose no response from the PCM.
- Carry out the network test. If the scan tool responds with no communication with one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(ref-355713) . If the network test passes, retrieve and record the continuous memory DTCs.
- Clear the continuous DTCs and carry out the self-test diagnostics for the SJB , the Interior Lighting Control Module (ILCM) (if equipped) and the Remote Function Actuator (RFA) module (if equipped).
- If the DTCs retrieved are related to the concern, go to «DTC CHARTS»(ref-355766-S39123610352010012800000) . For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) .
- If no DTCs related to the concern are retrieved, GO to «SYMPTOM CHART»(ref-355766-S38309264512010012800000) .
DTC Charts
Note. Refer to Description and Operation, Intelligent Access (IA) with Push Button Start in ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) to review the procedures for achieving the various ignition states (ignition off, ignition in accessory, ignition on, ignition start) on vehicles with this feature.
Smart Junction Box (SJB) DTC Chart
| DTC | Description | Action |
|---|---|---|
| B106E | Solid State Driver Disabled Due to Short Circuit | The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The Smart Junction Box (SJB) cannot enable the output until the cause of the short is corrected. ADDRESS all other DTCs first. After the cause of the concern is corrected, CLEAR the DTCs. REPEAT the self-test. |
| B106F | Module Disabled Due to External Fault | The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the SJB can withstand. The cause of the excessive current draw MUST be corrected before a new SJB is installed. ADDRESS all other DTCs first. After the cause of the concern is corrected, INSTALL a new SJB . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation. |
| B1320 | Driver Door Ajar Circuit Open | Go To PINPOINT TEST F . |
| B1328 | Passenger Door Ajar Circuit Open | Go To PINPOINT TEST F . |
| B1331 | Decklid Ajar Rear Door Circuit Failure | Go To PINPOINT TEST E . |
| B1336 | Door Ajar RR Circuit Open | Go To PINPOINT TEST F . |
| B1572 | Door Ajar LR Circuit Open | Go To PINPOINT TEST F . |
| B213A | Digital Dimmer Switch Input Circuit Failure | REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION . |
| B2A35 | Interior Lighting Output Circuit Open | If the interior courtesy lamps are inoperative, Go To PINPOINT TEST C . If the interior courtesy lamps stay on continuously, Go To PINPOINT TEST F . |
| B2A36 | Interior Lighting Output Circuit Short to Ground | Go To PINPOINT TEST C . |
| B2A38 | Floor Lamp Output Circuit Short to Ground | DIAGNOSE all other DTCs and symptoms first. If no other DTCs or symptoms are present, INSPECT the SJB and C2280a for bent pins, loose or corroded connections. If no concerns are found, INSTALL a new SJB . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation. |
| B2A39 | Puddle Lamp Output Circuit Open | If the puddle lamps are inoperative, Go To PINPOINT TEST D . If the puddle lamps are always on, Go To PINPOINT TEST G . |
| B2A3A | Puddle Lamp Output Circuit Short to Ground | Go To PINPOINT TEST D . |
| All other DTCs | REFER to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES . |
DTC CHART
Remote Function Actuator (RFA) Module DTC Chart
Note. This module utilizes a 5-character DTC followed by a 2-character failure-type code. The failure-type code provides information about specific fault conditions such as opens, or shorts to ground. Continuous memory DTCs have an additional 2- character DTC status code suffix to assist in determining DTC history.
| DTC | Description | Action |
|---|---|---|
| B1175:13 | Driver Door Ajar Switch: Circuit Open | Go To PINPOINT TEST F . |
| B1176:13 | Passenger Door Ajar Switch: Circuit Open | Go To PINPOINT TEST F . |
| B1178:13 | Boot/Trunk Ajar Switch: Circuit Open | Go To PINPOINT TEST E . |
| B11C0:13 | Driver Side Rear Door Ajar Switch: Circuit Open | Go To PINPOINT TEST F . |
| B11C1:13 | Passenger Side Rear Door Ajar Switch: Circuit Open | Go To PINPOINT TEST F . |
| All other DTCs | REFER to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES . |
DTC CHART
Interior Lighting Control Module (ILCM) DTC Chart
| DTC | Description | Action |
|---|---|---|
| B106E | Solid State Driver Disabled Due to Short Circuit | The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The Interior Lighting Control Module (ILCM) cannot enable the output until the cause of the short is corrected. ADDRESS all other DTCs first. After the cause of the concern is corrected, CLEAR the DTCs. REPEAT the self-test. |
| B106F | Module Disabled Due to External Fault | The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the SJB can withstand. The cause of the excessive current draw MUST be corrected before a new ILCM is installed. ADDRESS all other DTCs first. After the cause of the concern is corrected, INSTALL a new ILCM . REFER to INTERIOR LIGHTING CONTROL MODULE (ILCM) . TEST the system for normal operation. |
| B1342 | ECU Is Faulted | INSTALL a new ILCM . REFER to INTERIOR LIGHTING CONTROL MODULE (ILCM) . TEST the system for normal operation. |
| B2B18 | Ambient Light Switch Input Fault | If the ambient lighting is inoperative or does not cycle through the color combinations, Go To PINPOINT TEST L . If the ambient lighting does not cycle through the brightness settings, Go To PINPOINT TEST N . |
| B2B01 | Ambient Light Zone 1 Red Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B03 | Ambient Light Zone 1 Green Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B05 | Ambient Light Zone 1 Blue Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B09 | Ambient Light Zone 2 Red Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B0B | Ambient Light Zone 2 Green Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B0D | Ambient Light Zone 2 Blue Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B11 | Ambient Light Zone 3 Red Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B13 | Ambient Light Zone 3 Green Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B15 | Ambient Light Zone 3 Blue Circuit Short to Ground | Go To PINPOINT TEST M . |
| B2B00 | Ambient Light Zone 1 Red Circuit Open | Go To PINPOINT TEST M . |
| B2B02 | Ambient Light Zone 1 Green Circuit Open | Go To PINPOINT TEST M . |
| B2B04 | Ambient Light Zone 1 Blue Circuit Open | Go To PINPOINT TEST M . |
| B2B08 | Ambient Light Zone 2 Red Circuit Open | Go To PINPOINT TEST M . |
| B2B0A | Ambient Light Zone 2 Green Circuit Open | Go To PINPOINT TEST M . |
| B2B0C | Ambient Light Zone 2 Blue Circuit Open | Go To PINPOINT TEST M . |
| B2B10 | Ambient Light Zone 3 Red Circuit Open | Go To PINPOINT TEST M . |
| B2B12 | Ambient Light Zone 3 Green Circuit Open | Go To PINPOINT TEST M . |
| B2B14 | Ambient Light Zone 3 Blue Circuit Open | Go To PINPOINT TEST M . |
| U0140 Lost Communication | With Body Control Module ( GEM ) | Go To PINPOINT TEST O . |
| U2050 | No Application Present | REFER to MODULE CONFIGURATION . |
| All other DTCs | REFER to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES . |
DTC CHART
Symptom Chart
Note. Refer to Description and Operation, Intelligent Access (IA) with Push Button Start in ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) to review the procedures for achieving the various ignition states (ignition off, ignition in accessory, ignition on, ignition start) on vehicles with this feature.
| Condition | Possible Sources | Action |
|---|---|---|
| The courtesy lamps flash on and off | Smart Junction Box (SJB) is not configured correctly | CONFIGURE the SJB . REFER to MODULE CONFIGURATION . TEST the system for normal operation. |
| The courtesy lamps do not illuminate with a door open | Wiring, terminals or connectors Door ajar switch SJB RFA module | Go To PINPOINT TEST A . |
| The courtesy lamps do not illuminate from the instrument panel dimmer switch | Wiring, terminals or connectors Instrument panel dimmer switch SJB | Go To PINPOINT TEST B . |
| The interior courtesy lamp(s) are inoperative | Fuse Interior lamp Wiring, terminals or connectors SJB | Go To PINPOINT TEST C . |
| The puddle lamp(s) are inoperative | Fuse Wiring, terminals or connectors Exterior mirror | Go To PINPOINT TEST D . |
| The luggage compartment lamp is inoperative/always on | Wiring, terminals or connectors Luggage compartment lamp Luggage compartment lid latch | Go To PINPOINT TEST E . |
| All the courtesy lamps stay on continuously | Wiring, terminals or connectors Door ajar switch SJB RFA module | Go To PINPOINT TEST F . |
| The puddle lamps stay on continuously | Wiring, terminals or connectors SJB | Go To PINPOINT TEST G . |
| The interior courtesy lamps stay on continuously | Wiring, terminals or connectors SJB | Go To PINPOINT TEST H . |
| All the demand lamps are inoperative | Wiring, terminals or connectors SJB | Go To PINPOINT TEST I . |
| An individual demand lamp is inoperative | Wiring, terminals or connectors Demand lamp | Go To PINPOINT TEST J . |
| The battery saver does not deactivate after time-out | Wiring, terminals or connectors SJB | Go To PINPOINT TEST K . |
| An individual ambient lighting LED is inoperative/does not operate correctly | Ambient lighting harness | NOTE: The LEDs are not serviceable separate from the harness. INSTALL a new ambient lighting harness in question. TEST the system for normal operation. |
| The ambient lighting is inoperative | Wiring, terminals or connectors Ambient lighting switch Interior Lighting Control Module (ILCM) | Go To PINPOINT TEST L . |
| The ambient lighting does not cycle through all color combinations | Wiring, terminals or connectors Ambient lighting switch ILCM | Go To PINPOINT TEST M . |
| The ambient lighting does not cycle through the brightness settings | Wiring, terminals or connectors Ambient lighting switch ILCM | Go To PINPOINT TEST N . |
| NOTE |
|---|
| The LEDs are not serviceable separate from the harness. |
SYMPTOM CHART
Pinpoint Test A: The Courtesy Lamps Do Not Illuminate With A Door Open
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 1
- A1 CHECK THE COURTESY LAMP OPERATION USING THE INSTRUMENT PANEL DIMMER SWITCH Operate the courtesy lamps using the instrument panel dimmer switch. Do the interior courtesy lamps illuminate using the instrument panel dimmer switch? Yes : GO to A2 . No : Go To «PINPOINT TEST C»(ref-355766-S42899899612010012800000) .
- A2 CHECK THE DOOR AJAR SWITCH OPERATION Ignition OFF. Disconnect: Suspect Door Latch. Do the interior lamps illuminate? Yes : INSTALL a new door latch in question. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS»(ref-355732) . TEST the system for normal operation. No : GO to A3 .
- A3 CHECK THE AJAR SWITCH CIRCUIT FOR A SHORT TO GROUND Disconnect: SJB C2280c (Vehicles Without IA ) or RFA Module C2153e (Vehicles With IA ). Measure the resistance between the suspect door latch, harness side and ground as follows: CONNECTOR-PIN SPECIFICATION Location Connector-Pin Circuit LH front C525-5 CPL26 (GN/VT) RH front C609-5 CPL31 (WH) LH rear C705-5 CPL36 (GN) RH rear C805-5 CPL39 (YE) Is the resistance greater than 10,000 ohms? Yes : For vehicles without IA , GO to A4 . For vehicles with IA , GO to A5 . No : REPAIR the circuit in question for a short to ground. TEST the system for normal operation.
- A4 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
- A5 CHECK FOR CORRECT RFA MODULE OPERATION Disconnect all the RFA module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the RFA module connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new RFA module. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test B: The Courtesy Lamps Do Not Illuminate From The Instrument Panel Dimmer Switch
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 2
Scheme 3
- B1 CHECK THE DIMMABLE BACKLIGHTING ILLUMINATION Ignition OFF. Turn the headlamps switch to the PARKING LAMPS ON position. Monitor the instrument panel dimmable backlighting while pushing the instrument panel dimmer switch from full on to full off. Does the instrument cluster illumination intensity change with the instrument panel dimmer switch position? Yes : GO to B2 . No : REFER to «INSTRUMENT CLUSTER AND PANEL ILLUMINATION»(ref-355759) to continue diagnosis of the dimmable backlighting illumination.
- B2 CHECK THE INSTRUMENT PANEL DIMMER SWITCH Turn the headlamps switch to the OFF position. Disconnect: Instrument Panel Dimmer Switch C2298. Measure the voltage between the instrument panel dimmer switch C2298-2, circuit CLN28 (GN/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : INSTALL a new instrument panel dimmer switch. REFER to «INSTRUMENT CLUSTER AND PANEL ILLUMINATION»(ref-355759) . TEST the system for normal operation. No : GO to B3 .
- B3 CHECK THE DOME LAMP REQUEST INPUT CIRCUIT FOR AN OPEN Disconnect: SJB C2280b. Measure the resistance between the SJB C2280b-51, circuit CLN28 (GN/BU), harness side and the instrument panel dimmer switch C2298-2, circuit CLN28 (GN/BU), harness side. Is the resistance less than 5 ohms? Yes : GO to B4 . No : REPAIR the circuit. TEST the system for normal operation.
- B4 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test C: The Interior Courtesy Lamp(s) Are Inoperative
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 4
Scheme 5
Scheme 6
- C1 CHECK THE OPERATION OF ALL THE INTERIOR COURTESY LAMPS Ignition OFF. Push up the instrument panel dimmer switch to the second up detent and observe the interior courtesy lamps. Are all the interior courtesy lamps inoperative? Yes : VERIFY the SJB fuse 9 (15A) is OK. If OK, GO to C4 . If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. After the repair: If no DTCs are present, TEST the system for normal operation. If DTC B106E is present, CLEAR the DTCs and REPEAT the self-test ( required to enable the interior courtesy lamp output driver if DTC B106E is present ). TEST the system for normal operation. If DTC B106F is present, INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : GO to C2 .
- C2 CHECK FOR VOLTAGE TO THE INTERIOR LAMP Push the instrument panel dimmer switch down out of the DOME LAMP position. Disconnect: Inoperative Lamp. Push up the instrument panel dimmer switch to the second up detent. Measure the voltage between the inoperative lamp, harness side and ground as follows: CONNECTOR-PIN SPECIFICATION Inoperative Lamp Connector-Pin Circuit Front C929-2 VLN33 (GY/VT) LH rear C963-1 VLN33 (GY/VT) RH rear C964-1 VLN33 (GY/VT) Is the voltage greater than 10 volts? Yes : GO to C3 . No : REPAIR circuit VLN33 (GY/VT) for an open. TEST the system for normal operation.
- C3 CHECK FOR VOLTAGE TO THE INTERIOR LAMP USING THE CONNECTOR GROUND Measure the voltage between the inoperative interior lamp connector, harness side as follows: CONNECTOR-PIN SPECIFICATION Inoperative Lamp Connector-Pin/Circuit Connector-Pin/Circuit Front C929-2 VLN33 (GY/VT) C929-1 GD133 (BK) LH rear C963-1 VLN33 (GY/VT) C963-2 GD133 (BK) RH rear C964-1 VLN33 (GY/VT) C964-2 GD133 (BK) Is the voltage greater than 10 volts? Yes : INSTALL a new interior lamp for the lamp in question. REFER to «INTERIOR LAMP»(ref-355766-S32173851422010012800000) . TEST the system for normal operation. No : REPAIR the ground circuit in question for an open. TEST the system for normal operation.
- C4 BYPASS THE SJB Ignition OFF. Disconnect: SJB C2280a. NOTE: If the jumper wire fails, refer to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. After the repair: If no DTCs are present, test the system for normal operation. If DTC B106E is present, clear the DTCs and repeat the self-test ( required to enable the courtesy lamp output driver if DTC B106E is present) . Test the system for normal operation. If DTC B106F is present, install a new SJB . Refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . Test the system for normal operation. Connect a fused jumper wire between the SJB C2280a-9, circuit VLN33 (GY/VT), harness side and battery positive. Do the courtesy lamps illuminate? Yes : REMOVE the jumper wire. GO to C5 . No : REMOVE the jumper wire. REPAIR circuit VLN33 (GY/VT) for an open. CLEAR the DTCs. REPEAT the self-test.
- C5 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test D: The Puddle Lamp(s) Are Inoperative
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 7
Scheme 8
Scheme 9
- D1 CHECK THE PUDDLE LAMP OPERATION Ignition OFF. Push the instrument panel dimmer switch down out of the DOME LAMP position. Disconnect: Inoperative Lamp. Push up the instrument panel dimmer switch to the second up detent. Are both the puddle lamps inoperative? Yes : VERIFY the SJB fuse 10 (15A) is OK. If OK, GO to D2 . If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. After the repair: if no DTCs are present, TEST the system for normal operation. If DTC B106E is present, CLEAR the DTCs and REPEAT the self-test ( required to enable the puddle lamp output driver if DTC B106E is present) . TEST the system for normal operation. If DTC B106F is present, INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : GO to D3 .
- D2 BYPASS THE SJB Push the instrument panel dimmer switch down out of the DOME LAMP position. Disconnect: Inoperative Lamp. Push up the instrument panel dimmer switch to the second up detent. Disconnect: SJB C2280c. NOTE: If the jumper wire fails, refer to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. After the repair: If no DTCs are present, test the system for normal operation. If DTC B106E is present, clear the DTCs and repeat the self-test ( required to enable the puddle lamp output driver if DTC B106E is present) . Test the system for normal operation. If DTC B106F is present, install a new SJB . Refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . Test the system for normal operation. Connect a fused jumper wire between the SJB C2280c-12, circuit CLN25 (VT), harness side and battery positive. Do the puddle lamps illuminate? Yes : REMOVE the jumper wire. GO to D5 . No : REMOVE the jumper wire. REPAIR circuit CLN25 (VT) for an open. CLEAR the DTCs. REPEAT the self-test.
- D3 CHECK FOR VOLTAGE TO THE EXTERIOR MIRROR Push the instrument panel dimmer switch down out of the DOME LAMP position. Disconnect: Suspect Exterior Mirror. Push the instrument panel dimmer switch to the DOME LAMP position. Measure the voltage between the LH exterior mirror C521-5, circuit CLN25 (VT), harness side and ground; or between the RH exterior mirror C615-5, circuit CLN25 (VT), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to D4 . No : REPAIR circuit CLN25 (VT) for an open. TEST the system for normal operation.
- D4 CHECK FOR VOLTAGE TO THE EXTERIOR MIRROR USING THE CONNECTOR GROUND Measure the voltage between the LH exterior mirror C521-5, circuit CLN25 (VT), harness side and LH exterior mirror C521-7, circuit GD133 (BK), harness side; or between the RH exterior mirror C615-5, circuit CLN25 (VT), harness side and the RH exterior mirror C615-7, circuit GD145 (BK/BU), harness side. Is the voltage greater than 10 volts? Yes : INSTALL a new exterior mirror in question. REFER to «REAR VIEW MIRRORS»(ref-355733) . TEST the system for normal operation. No : REPAIR the ground circuit in question for an open. TEST the system for normal operation.
- D5 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. RUN the on-demand self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs. TEST the system for normal operation.
Pinpoint Test E: The Luggage Compartment Lamp Is Inoperative/Always On
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 10
Scheme 11
Scheme 12
- E1 DETERMINE IF THE LAMP IS INOPERATIVE OR ALWAYS ON Open the luggage compartment lid and observe the luggage compartment lamp. Is the luggage compartment lamp illuminated? Yes : GO to E2 . No : GO to E3 .
- E2 CHECK THE LUGGAGE COMPARTMENT LAMP GROUND CONTROLLED CIRCUIT FOR A SHORT TO GROUND Disconnect: Luggage Compartment Lid Latch C4223. Does the luggage compartment lamp continue to illuminate? Yes : REPAIR circuit CLN13 (WH/BU) for a short to ground. TEST the system for normal operation. No : INSTALL a new luggage compartment lid latch. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS»(ref-355732) . TEST the system for normal operation.
- E3 CHECK FOR VOLTAGE TO THE LUGGAGE COMPARTMENT LAMP Disconnect: Luggage Compartment Lamp C428. Ignition ON. Measure the voltage between the luggage compartment lamp C428-1, circuit CLN09 (YE/GN), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to E4 . No : REPAIR circuit CLN09 (YE/GN) for an open. TEST the system for normal operation.
- E4 CHECK FOR VOLTAGE TO THE LUGGAGE COMPARTMENT LAMP USING THE CONNECTOR GROUND Measure the voltage between the luggage compartment lamp C428-1, circuit CLN09 (YE/GN), harness side and the luggage compartment lamp C428-2, circuit CLN13 (WH/BU), harness side. Is the voltage greater than 10 volts? Yes : INSTALL a new luggage compartment lamp. TEST the system for normal operation. No : GO to E5 .
- E5 CHECK FOR VOLTAGE TO THE LUGGAGE COMPARTMENT LID LATCH Connect: Luggage Compartment Lamp C428. Disconnect: Luggage Compartment Lid Latch C4223. Measure the voltage between the luggage compartment lid latch C4223-2, circuit CLN13 (WH/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : INSTALL a new luggage compartment lid latch. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS»(ref-355732) . TEST the system for normal operation. No : REPAIR circuit CLN13 (WH/BU) for an open. TEST the system for normal operation.
Pinpoint Test F: All The Courtesy Lamps Stay On Continuously
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 13
Scheme 14
Scheme 15
Scheme 16
- F1 CHECK THE SJB DTCs FROM THE CONTINUOUS AND ON-DEMAND SELF-TESTS Review the recorded results from the SJB continuous and the on-demand self-test. Is DTC B2A35 or DTC B2A39 present? Yes : For DTC B2A35, Go To «PINPOINT TEST H»(ref-355766-S38121849612010012800000) . For DTC B2A39, Go To «PINPOINT TEST G»(ref-355766-S11265938192010012800000) . No : GO to F2 .
- F2 CHECK FOR A VOLTAGE SIGNAL TO THE DOOR AJAR SWITCH Ignition OFF. Disconnect Suspect Door Ajar Switch Measure the voltage between the suspect ajar switch, harness side and ground as follows: CONNECTOR PIN SPECIFICATION SJB DTC Connector-Pin Circuit B1320 LH front C525-5 CPL26 (GN/VT) B1328 RH front C609-5 CPL31 (WH) B1572 LH rear C704-5 CPL36 (GN) B1336 RH rear C804-5 CPL39 (YE) Is the voltage greater than 10 volts? Yes : GO to F3 . No : GO to F4 .
- F3 CHECK FOR A VOLTAGE SIGNAL TO THE DOOR AJAR SWITCH USING THE CONNECTOR GROUND Disconnect: Suspect Door Ajar Switch. Measure the voltage between the suspect ajar switch connector, harness side as follows: CONNECTOR-PIN SPECIFICATION SJB DTC/Door Ajar Switch Connector-Pin/Circuit Connector-Pin/Circuit B1320 LH front C525-5 CPL26 (GN/VT) C525-6 GD133 (BK) B1328 RH front C609-5 CPL31 (WH) C609-6 GD145 (BK/BU) B1572 LH rear C704-5 CPL36 (GN) C704-6 GD133 (BK) B1336 RH rear C804-5 CPL39 (YE) C804-6 GD145 (BK/BU) Is the voltage greater than 10 volts? Yes : INSTALL a new door ajar switch for the switch in question. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS»(ref-355732) . CLEAR the DTCs. REPEAT the self-test. No : REPAIR the ground circuit in question for an open. CLEAR the DTCs. REPEAT the self-test.
- F4 CHECK THE DOOR AJAR SWITCH INPUT CIRCUIT FOR AN OPEN Disconnect: SJB C2280c (Vehicles Without IA ). Disconnect: RFA Module C2153e (Vehicles With IA ). For vehicles not equipped with IA , measure the resistance between the suspect door ajar switch, harness side and the SJB , harness side as follows: DOOR AJAR SWITCH CHART SJB DTC/Door Ajar Switch Suspect Door Ajar Switch Connector-Pin SJB Connector-Pin Circuit B1320 LH front C525-5 C2280c-14 CPL26 (GN/VT) B1328 RH front C609-5 C2280c-2 CPL31 (WH) B1572 LH rear C704-5 C2280c-3 CPL36 (GN) B1336 RH rear C804-5 C2280c-15 CPL39 (YE) For vehicles equipped with IA , measure the resistance between the suspect door ajar switch, harness side and the RFA module, harness side as follows: DOOR AJAR SWITCH SPECIFICATION SJB DTC/Door Ajar Switch Suspect Door Ajar Switch Connector-Pin RFA Module Connector-Pin Circuit B1320 LH front C525-5 C2153e-19 CPL26 (GN/VT) B1328 RH front C609-5 C2153e-18 CPL31 (WH) B1572 LH rear C704-5 C2153e-21 CPL36 (GN) B1336 RH rear C804-5 C2153e-20 CPL39 (YE) Is the resistance less than 5 ohms? Yes : For vehicles not equipped with IA , GO to F5 . For vehicles equipped with IA , GO to F6 . No : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
- F5 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
- F6 CHECK FOR CORRECT RFA MODULE OPERATION Disconnect all the RFA module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the RFA module connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new RFA module. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
Pinpoint Test G: The Puddle Lamps Stay On Continuously
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- G1 CHECK THE INTERIOR COURTESY LAMPS Ignition OFF. Are the interior courtesy lamps illuminated? Yes : Go To «PINPOINT TEST F»(ref-355766-S40920304752010012800000) . No : GO to G2 .
- G2 CHECK THE SJB PUDDLE LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE Disconnect: SJB C2280c. Ignition ON. Do the puddle lamps continue to illuminate? Yes : REPAIR circuit CLN25 (VT) for a short to voltage. CLEAR the DTCs. REPEAT the self-test. No : GO to G3 .
- G3 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test H: The Interior Courtesy Lamps Stay On Continuously
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- H1 CHECK FOR RECORDED SJB DTCs Review the recorded results from the SJB self-test. Are any DTCs present? Yes : For DTC B2A35, GO to H2 . For all other DTCs, REFER to «DTC CHARTS»(ref-355766-S39123610352010012800000) . No : GO to H2 .
- H2 CHECK THE SJB INTERIOR COURTESY LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect: SJB C2280a. Ignition ON. Observe the courtesy lamps. Do the interior courtesy lamps continue to illuminate? Yes : REPAIR circuit CLN03 (YE/GY) for a short to voltage. CLEAR the DTCs. TEST the system for normal operation. No : GO to H3 .
- H3 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test I: All The Demand Lamps Are Inoperative
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Note. Make sure the battery saver is operating correctly by checking the courtesy lamps first.
Scheme 17
- I1 BYPASS THE SJB Ignition OFF. Disconnect: SJB C2280d. NOTE: If the fuse fails, refer to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. Connect a fused jumper wire between the SJB C2280d-21, circuit CLN09 (YE/GN), harness side and battery positive. Do the demand lamps illuminate when switched on? Yes : VERIFY the SJB fuse 25 (10A) is OK. If OK, GO to I2 . No : REPAIR the circuit. TEST the system for normal operation.
- I2 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test J: An Individual Demand Lamp Is Inoperative
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 18
Scheme 19
- J1 CHECK FOR VOLTAGE TO THE DEMAND LAMP Ignition OFF. Disconnect: Suspect Demand Lamp. Ignition ON. Measure the voltage between the suspect demand lamp, harness side and ground as follows: CONNECTOR-PIN SPECIFICATION Location Connector-Pin Circuit LH vanity mirror lamp C905-1 CLN09 (YE/GN) RH vanity mirror lamp C906-1 CLN09 (YE/GN) Front C929-3 CLN09 (YE/GN) LH rear C963-3 CLN09 (YE/GN) RH rear C964-3 CLN09 (YE/GN) Is the voltage greater than 10 volts? Yes : GO to J2 . No : REPAIR circuit CLN09 (YE/GN) for an open. TEST the system for normal operation.
- J2 CHECK FOR VOLTAGE TO THE DEMAND LAMP USING THE CONNECTOR GROUND Measure the voltage between the inoperative demand lamp, harness side and ground as follows: CONNECTOR-PIN SPECIFICATION Inoperative Lamp Connector-Pin/Circuit Connector-Pin/Circuit LH vanity mirror lamp C905-1 CLN09 (YE/GN) C905-2 GD133 (BK) RH vanity mirror lamp C906-1 CLN09 (YE/GN) C906-2 GD133 (BK) Front C929-3 CLN09 (YE/GN) C929-1 GD133 (BK) LH rear C963-3 CLN09 (YE/GN) C963-2 GD133 (BK) RH rear C964-3 CLN09 (YE/GN) C964-2 GD133 (BK) Is the voltage greater than 10 volts? Yes : INSTALL a new demand lamp for the suspect lamp. TEST the system for normal operation. No : REPAIR the ground circuit in question for an open. TEST the system for normal operation.
Pinpoint Test K: The Battery Saver Does Not Deactivate After Time-Out
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- K1 CHECK THE SJB IGNITION SWITCH PIDs Ignition ON. Enter the following diagnostic mode on the scan tool: SJB DataLogger. Monitor the SJB ignition switch PIDs (IGN_A_ECU, IGN_O_ECU, IGN_R_ECU and IGN_S_ECU) while rotating the ignition switch through all positions. Do the ignition switch PIDs agree with the ignition switch positions? Yes : GO to K2 . No : REFER to «STEERING COLUMN SWITCHES»(ref-355717) .
- K2 CHECK THE DEMAND LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect: SJB C2280d. Ignition ON. Operate the demand lamps. Do the demand lamps illuminate? Yes : REPAIR circuit CLN09 (YE/GN) for a short to voltage. TEST the system for normal operation. No : GO to K3 .
- K3 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test L: The Ambient Lighting Is Inoperative
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 20
Scheme 21
Scheme 22
Scheme 23
Scheme 24
- L1 CHECK FOR COMMUNICATION TO THE ILCM Enter the following diagnostic mode on the scan tool: ILCM DataLogger. Carry out the network test using the scan tool. Does the scan tool communicate with the ILCM? Yes : GO to L2 . No : REFER to «MODULE COMMUNICATIONS NETWORK»(ref-355713) .
- L2 CHECK THE INPUT FROM THE AMBIENT LIGHTING SWITCH Enter the following diagnostic mode on the scan tool: ILCM DataLogger. While pressing and releasing the ambient lighting switch, monitor the ILCM ambient lighting select switch PID (AmbiColor). Does the PID read active with the switch pressed and idle with the switch released? Yes : GO to L8 . No : If the PID always reads active, GO to L3 . If the PID always reads idle, GO to L5 .
- L3 CHECK THE AMBIENT LIGHTING SWITCH FOR A SHORT TO GROUND Enter the following diagnostic mode on the scan tool: ILCM DataLogger. Disconnect: Ambient Lighting Switch C2393. Monitor the ILCM ambient lighting select switch PID (AmbiColor). Does the PID still read active? Yes : GO to L4 . No : INSTALL a new ambient lighting switch. REFER to «AMBIENT LIGHTING SWITCH»(ref-355766-S25416798742010012800000) . TEST the system for normal operation.
- L4 CHECK THE AMBIENT LIGHTING SELECT SWITCH INPUT CIRCUITS FOR A SHORT TO GROUND Disconnect: ILCM C2392. Measure the resistance between the ILCM C2392-8, circuit CPL60 (WH/BN), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to L5 . No : REPAIR circuit CPL60 (WH/BN) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
- L5 BYPASS THE AMBIENT LIGHTING SELECT SWITCH Ignition OFF. Disconnect: Ambient Lighting Select Switch C2393. Ignition ON. Enter the following diagnostic mode on the scan tool: ILCM DataLogger. Monitor the ILCM ambient lighting select switch PID (AmbiColor). Connect a fused jumper wire between the ambient lighting select switch C2393-2, circuit CPL60 (WH/BN), harness side and ground. Does the PID read active? Yes : GO to L6 . No : GO to L7 .
- L6 BYPASS THE AMBIENT LIGHTING SELECT SWITCH USING THE CONNECTOR GROUND Enter the following diagnostic mode on the scan tool: ILCM DataLogger. Monitor the ILCM ambient lighting select switch PID (AmbiColor). Connect and remove a fused jumper wire between the ambient lighting switch C2393-2, circuit CLN60 (WH/BN), harness side and the ambient lighting switch C2393-7, circuit GD116 (BK/VT), harness side. Does the PID read active? Yes : REMOVE the jumper wire. INSTALL a new ambient lighting switch. TEST the system for normal operation. No : REMOVE the jumper wire. REPAIR circuit GD116 (BK/VT) for an open. TEST the system for normal operation.
- L7 CHECK THE AMBIENT LIGHTING SELECT SWITCH INPUT FOR AN OPEN Ignition OFF. Disconnect: ILCM C2392. Measure the resistance between the ILCM C2392-8, circuit CLN60 (WH/BN), harness side and the ambient lighting select switch C2393-2, circuit CPL60 (WH/BN), harness side. Is the resistance less than 5 ohms? Yes : GO to L9 . No : REPAIR circuit CLN60 (WH/BN) for an open. TEST the system for normal operation.
- L8 CHECK THE AMBIENT LIGHTING RETURN CIRCUIT Ignition OFF. Check the diode circuits between the ILCM , harness side as follows: CONNECTOR-PIN SPECIFICATION Connector-Pin/Circuit Connector-Pin/Circuit Zone 1 C2392-4 CLN44 (OG) C2392-20 RLN44 (BN) C2392-3 CLN45 (GN) C2392-20 RLN44 (BN) C2392-6 CLN46 (BU) C2392-20 RLN44 (BN) Zone 2 C2392-11 CLN48 (YE/OG) C2392-20 RLN44 (BN) C2392-12 CLN49 (YE/GN) C2392-20 RLN44 (BN) C2392-2 CLN50 (YE/BU) C2392-20 RLN44 (BN) Zone 3 C2392-13 CLN51 (WH/OG) C2392-20 RLN44 (BN) C2392-14 CLN52 (WH/GN) C2392-20 RLN44 (BN) C2392-15 CLN53 (WH/BU) C2392-20 RLN44 (BN) Does the meter indicate the circuit is good? Yes : GO to L9 . No : REPAIR circuit RLN44 (BU) for an open. TEST the system for normal operation.
- L9 CHECK FOR CORRECT ILCM OPERATION Disconnect the ILCM connector. Check for: corrosion damaged pins pushed-out pins Connect the ILCM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new ILCM . REFER to «INTERIOR LIGHTING CONTROL MODULE (ILCM)»(ref-355766-S37492885092010012800000) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test M: The Ambient Lighting Does Not Cycle Through All Color Combinations
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- M1 CHECK THE INPUT FROM THE AMBIENT LIGHTING SWITCH Enter the following diagnostic mode on the scan tool: ILCM DataLogger. While pressing and releasing the ambient lighting switch, monitor the ILCM ambient lighting select switch PID (AmbiColor). Does the PID read active with the switch pressed and idle with the switch released? Yes : GO to M2 . No : Go To «PINPOINT TEST L»(ref-355766-S37437233782010012800000) .
- M2 CHECK THE AMBIENT LIGHTING HARNESS Ignition OFF. Check the diode circuits between the ILCM , harness side as follows: CONNECTOR PIN SPECIFICATION Connector-Pin/Circuit Connector-Pin/Circuit Zone 1 C2392-4 CLN44 (OG) C2392-20 RLN44 (BN) C2392-3 CLN45 (GN) C2392-20 RLN44 (BN) C2392-6 CLN46 (BU) C2392-20 RLN44 (BN) Zone 2 C2392-11 CLN48 (YE/OG) C2392-20 RLN44 (BN) C2392-12 CLN49 (YE/GN) C2392-20 RLN44 (BN) C2392-2 CLN50 (YE/BU) C2392-20 RLN44 (BN) Zone 3 C2392-13 CLN51 (WH/OG) C2392-20 RLN44 (BN) C2392-14 CLN52 (WH/GN) C2392-20 RLN44 (BN) C2392-15 CLN53 (WH/BU) C2392-20 RLN44 (BN) Does the meter indicate the circuit is good? Yes : GO to M3 . No : REPAIR the circuit in question or INSTALL a new ambient lighting harness. TEST the system for normal operation.
- M3 CHECK FOR CORRECT ILCM OPERATION Disconnect the ILCM connector. Check for: corrosion damaged pins pushed-out pins Connect the ILCM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new ILCM . REFER to «INTERIOR LIGHTING CONTROL MODULE (ILCM)»(ref-355766-S37492885092010012800000) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Pinpoint Test N: The Ambient Lighting Does Not Cycle Through Brightness Settings
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Scheme 25
Scheme 26
Scheme 27
- N1 CHECK THE INPUT FROM THE AMBIENT LIGHTING SWITCH Ignition ON. Enter the following diagnostic mode on the scan tool: ILCM DataLogger. While pressing and releasing the ambient lighting switch, monitor the ILCM ambient lighting switch PID (AmbiDim). Does the PID agree with the switch positions? Yes : GO to N6 . No : If the PID indicates active with the switch not pressed, GO to N2 . If the PID indicates idle when the switch is pressed, GO to N4 .
- N2 CHECK THE AMBIENT LIGHTING SWITCH FOR A SHORT TO GROUND Ignition OFF. Disconnect: Ambient Lighting Switch C2304. Ignition ON. Enter the following diagnostic mode on the scan tool: ILCM DataLogger. Monitor the ILCM ambient lighting switch PID (AmbiDim). Does the PID still read active? Yes : GO to N3 . No : INSTALL a new ambient lighting switch. REFER to «AMBIENT LIGHTING SWITCH»(ref-355766-S25416798742010012800000) . TEST the system for normal operation.
- N3 CHECK THE AMBIENT LIGHTING SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect: ILCM C2411. Measure the resistance between the ILCM C2411-9, circuit CLN55 (YE/VT), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to N6 . No : REPAIR circuit CLN55 (YE/VT) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
- N4 CHECK THE AMBIENT LIGHTING SWITCH INPUT AND GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: ILCM C2411. Disconnect: Ambient Lighting Switch C2304. Measure the resistance between the ambient lighting switch C2304-3, circuit CLN55 (YE/VT), harness side and the ILCM C2411-9, circuit CLN55 (YE/VT), harness side; and between the ambient lighting switch C2304-4, circuit GD114 (BK/BU), harness side and ground. Are the resistances less than 5 ohms? Yes : GO to N5 . No : REPAIR circuit CLN55 (YE/VT) or circuit GD114 (BK/BU) for an open. TEST the system for normal operation.
- N5 BYPASS THE AMBIENT LIGHTING SWITCH Connect: ILCM C2411. Ignition ON. Enter the following diagnostic mode on the scan tool: ILCM DataLogger. Monitor the ILCM ambient lighting switch PID (AmbiDim). Connect and remove a fused jumper wire between the ambient lighting switch C2304-3, circuit CLN55 (YE/VT), harness side and the ambient lighting switch C2304-4, circuit GD114 (BK/BU), harness side. Does the PID indicate active? Yes : REMOVE the jumper wire. INSTALL a new ambient lighting switch. REFER to «AMBIENT LIGHTING SWITCH»(ref-355766-S25416798742010012800000) . TEST the system for normal operation. No : REMOVE the jumper wire. GO to N6 .
- N6 CHECK FOR CORRECT ILCM OPERATION Disconnect the ILCM connector. Check for: corrosion damaged pins pushed-out pins Connect the ILCM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new ILCM . REFER to «INTERIOR LIGHTING CONTROL MODULE (ILCM)»(ref-355766-S37492885092010012800000) . TEST the system for normal operation. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
PINPOINT TEST O: DTC U0140
- O1 VERIFY THE CUSTOM CONCERN Ignition ON. Verify that there is an observable symptom present. Is an observable symptom present? Yes : GO to O2 . No : The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
- O2 CHECK THE COMMUNICATION NETWORK Enter the following diagnostic mode on the scan tool: Network Test. Carry out the network test. Does the SJB pass the network test? Yes : GO to O3 . No : REFER to «MODULE COMMUNICATIONS NETWORK»(ref-355713) .
- O3 RECHECK THE ILCM DTCs Enter the following diagnostic mode on the scan tool: ILCM Self-Test. Clear the DTCs and repeat the ILCM self-test.. Is DTC U0140 still present? Yes : GO to O4 . No : The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
- O4 CHECK FOR DTC U0140 SET IN OTHER MODULES Clear all DTCs. Ignition OFF. Ignition ON. Wait 10 seconds. Enter the following diagnostic mode on the scan tool: Self-Test. Retrieve the continuous memory DTCs from all modules. Is DTC U0140 set in the Driver Seat Module (DSM) or the Driver Door Module (DDM)? Yes : INSTALL a new SJB . REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . CLEAR all continuous DTCs. REPEAT the self-test. No : INSTALL a new ILCM . REFER to «INTERIOR LIGHTING CONTROL MODULE (ILCM)»(ref-355766-S37492885092010012800000) . TEST the system for normal operation.