DTC B15C5: Manual Button Malfunction [11/2018 - 10/2019]: Procedure

1. Turn the ignition switch off.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON and wait for 10 seconds.
4. Turn the Techstream on.
5. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [11/2018 - 10/2019]

   Body Electrical > Telematics > Clear DTCs 

6. Recheck for DTCs.

   Refer to DTC CHECK / CLEAR [11/2018 - 10/2019]

   Body Electrical > Telematics > Trouble Codes 

   Result

   Result	Proceed to
   DTC B15C5 is output	A
   DTC B15C5 is not output	B

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

A 

See step  2

1. Remove the map light sub-assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	for TMC Made
   *B	for TMMC Made
   *a	Component without harness connected (Map Light Sub-assembly)

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR TMC MADE:
   
   

   Tester Connection	Condition	Specified Condition
   18 (SIG1) - 12 (GND3)	Manual (SOS) switch not pressed	410 to 414 Ω
   18 (SIG1) - 12 (GND3)	Manual (SOS) switch pressed	81 to 83 Ω

   FOR TMMC MADE:
   
   

   Tester Connection	Condition	Specified Condition
   9 (SIG1) - 10 (GND3)	Manual (SOS) switch not pressed	410 to 414 Ω
   9 (SIG1) - 10 (GND3)	Manual (SOS) switch pressed	81 to 83 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE MAP LIGHT SUB-ASSEMBLY. Refer to  REMOVAL [11/2018 - ] 

Result: 

OK 

See step  3

1. Disconnect the G9 DCM (Telephone Transceiver Assembly) connector.
2. Disconnect the P14 map light sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR TMC MADE:
   
   

   Tester Connection	Condition	Specified Condition
   G9-26 (SIG-) - P14-12 (GND3)	Always	Below 1 Ω
   G9-26 (SIG-) or P14-12 (GND3) - Body ground	Always	10 kΩ or higher
   G9-27 (SIG1) - P14-18 (SIG1)	Always	Below 1 Ω
   G9-27 (SIG1) or P14-18 (SIG1) - Body ground	Always	10 kΩ or higher

   FOR TMMC MADE:
   
   

   Tester Connection	Condition	Specified Condition
   G9-26 (SIG-) - P14-10 (GND3)	Always	Below 1 Ω
   G9-26 (SIG-) or P14-10 (GND3) - Body ground	Always	10 kΩ or higher
   G9-27 (SIG1) - P14-9 (SIG1)	Always	Below 1 Ω
   G9-27 (SIG1) or P14-9 (SIG1) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Replace the DCM (Telephone Transceiver Assembly).

   Refer to REMOVAL [11/2018 - 10/2019]

   NOTE:

   • The ignition switch must be off.
   • Do not exchange the DCM (Telephone Transceiver Assembly) with one from another vehicle.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [11/2018 - 10/2019]