Pinpoint Test C: A Single Illumination Source Is Inoperative

• 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  : System is operating correctly at this time.
• No  : If the exterior rear view mirror switch, the memory set switch, the driver door lock control switch, or the passenger door lock control switch (fixed backlighting) are inoperative, GO to  C4.

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

• 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:
  VOLTAGE 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)
  traction assist/parking aid switch	C2114-9	1417 (LG/RD)
  adjustable pedal switch	C2089-3	1417 (LG/RD)
  power vent window control switch	C2981-4	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.

• Measure the resistance between the inoperative illumination source and ground as follows:
  RESISTANCE 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)
  traction assist/parking aid switch	C2114-5	1205 (BK)
  adjustable pedal switch	C2089-2	1205 (BK)
  power vent window control switch	C2981-8	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.

• Key in OFF position.
• Disconnect: Inoperative Illumination Source.
• Key in ON position.
• Place the headlamp switch in the headlamps ON position.
• Measure the voltage between the inoperative illumination source and ground as follows:
  VOLTAGE REFERENCE
  
  

  Component	Connector-Pin	Circuit
  exterior rear view mirror switch	C527-6	1499 (PK/LG)
  memory set switch	C9023-3	1499 (PK/LG)
  driver door lock control switch	C508b-5	1499 (PK/LG)
  driver door power window control switch	C508a-4	400 (LB/BK)
  passenger door lock control switch	C605-5	1499 (PK/LG)

• Is the voltage greater than 10 volts? 

• Yes  : GO to C5  .
• No  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.

• Measure the resistance between the inoperative illumination source and ground as follows:
  RESISTANCE REFERENCE
  
  

  Component	Connector-Pin	Circuit
  exterior rear view mirror switch	C527-3	1205 (BK)
  memory set switch	C9023-4	1205 (BK)
  driver door lock control switch	C508b-1	1205 (BK)
  driver door power window control switch	C508a-5	1205 (BK)
  passenger 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.