Pinpoint Test C: A Single Illumination Source Is Inoperative

1. C1 VERIFY THE CONDITION 
   • Key in ON position.
   • Place the headlamp switch in the PARK position.
   • Rotate the instrument panel dimmer switch to the full illumination position.
   • Observe the lighting.
   • Are the illumination sources operating correctly? 

   Yes  : The system is operating correctly at this time.

   No  : If the exterior mirror control switch, the memory set switch, the LH door lock control switch, or the RH door lock control switch (fixed backlighting) are inoperative, GO to  C4.

   If the variable backlighting sources are inoperative, GO to  C2.

2. C2 CHECK THE VOLTAGE SUPPLY TO THE INOPERATIVE VARIABLE ILLUMINATION SOURCE 
   • Key in OFF position.
   • Disconnect: Inoperative Illumination Source.
   • Key in ON position.
   • Place the headlamp switch in the headlamps ON position.
   • Rotate the instrument panel dimmer switch to the full illumination position.
   • Measure the voltage between the inoperative illumination source and ground as follows:
     INOPERATIVE ILLUMINATION SOURCE CONNECTOR-PIN REFERENCE
     
     

     Component	Connector - Pin	Circuit
     message center switch	C253-6	1417 (LG/RD)
     headlamp switch	C205-2	1418 (LB/WH)
     overhead console	C930-14	1418 (LB/WH)
     overhead console	C930-6	1417 (LG/RD)
     parking aid disable switch	C2114-9	1417 (LG/RD)
     adjustable pedal switch	C2089-3	1417 (LG/RD)
     quarter window switch	C2981-4	1417 (LG/RD)
     DVD player	C949-3	1417 (LG/RD)
     clock	C2016-2	1418 (LB/WH)

   • Is the voltage greater than 10 volts? 

   Yes  : GO to  C3.

   No  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.

3. C3 CHECK THE GROUND TO THE INOPERATIVE ILLUMINATION SOURCE 
   • Measure the resistance between the inoperative illumination source and ground as follows:
     INOPERATIVE ILLUMINATION SOURCE CONNECTOR-PIN REFERENCE
     
     

     Component	Connector - Pin	Circuit
     message center switch	C253-3	1205 (BK)
     headlamp switch	C205-1	1205 (BK)
     overhead console	C930-4	1203 (BK/LB)
     parking aid disable switch	C2114-5	1205 (BK)
     adjustable pedal switch	C2089-2	1205 (BK)
     quarter window switch	C2981-8	1205 (BK)
     DVD player	C949-14	1205 (BK)
     clock	C2016-5	1205 (BK)

   • Is the resistance less than 5 ohms? 

   Yes  : INSTALL a new component in question. CLEAR the DTCs. REPEAT the self-test.

   No  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.

4. C4 CHECK FOR VOLTAGE AT THE FIXED ILLUMINATION SOURCE 
   • Key in OFF position.
   • Disconnect: Inoperative Illumination Source.
   • Key in ON position.
   • Measure the voltage between the inoperative illumination source and ground as follows:
     INOPERATIVE ILLUMINATION SOURCE CONNECTOR-PIN REFERENCE
     
     

     Component	Connector - Pin	Circuit
     exterior mirror control switch	C527-6	1499 (PK/LG)
     memory set switch	C9023-3	1499 (PK/LG)
     LH door lock control switch	C508b-5	1499 (PK/LG)
     RH door lock control switch	C605-5	1499 (PK/LG)

   • Is the voltage greater than 10 volts? 

   Yes  : VERIFY the smart junction box (SJB) fuse 6 (5A) is OK. If OK, GO to  C5.

   No  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.

5. C5 CHECK THE GROUND TO THE INOPERATIVE ILLUMINATION SOURCE 
   • Measure the resistance between the inoperative fixed illumination source and ground as follows:
     INOPERATIVE FIXED ILLUMINATION SOURCE CONNECTOR-PIN REFERENCE
     
     

     Component	Connector - Pin	Circuit
     exterior mirror control switch	C527-3	1205 (BK)
     memory set switch	C9023-4	1205 (BK)
     LH door lock control switch	C508b-1	1205 (BK)
     RH door lock control switch	C605-1	1205 (BK)

   • Is the resistance less than 5 ohms? 

Yes  : INSTALL a new component in question. CLEAR the DTCs. REPEAT the self-test.

No  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.