DESCRIPTION
These DTCs are stored when the DCM (Telematics Transceiver) detects an open or a short in the telephone and GPS antenna assembly (for Roof Side) circuit. The DCM (Telematics Transceiver) oscillates and receives 824 - 894 MHz or 1850 - 1990 MHz radio-frequency through the telephone and GPS antenna assembly (for Roof Side).
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
B1573 |
Short in Telephone Antenna Circuit |
Telephone and GPS antenna assembly (for Roof Side) impedance is lower than malfunction criterion for 10 seconds when ignition switch is ON. (Short circuit) |
|
B15CB |
Telematics Transceiver Antenna Disconnected |
Telephone and GPS antenna assembly (for Roof Side) impedance is higher than malfunction criterion for 10 seconds when ignition switch is ON. (Open circuit) |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
Click here
Click here
PROCEDURE
1. |
CHECK DTC |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch ON and wait for 10 seconds.
(d) Turn the Techstream on.
(e) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs(f) Recheck for DTCs.
Body Electrical > Telematics > Trouble Codes
Result |
Proceed to |
---|---|
DTC B1573 or B15CB is output |
A |
DTC B1573 or B15CB is not output |
B |
B | ![]() |
CHECK FOR INTERMITTENT PROBLEMS |
|
2. |
INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side) |
(a) Disconnect the F telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector from the telephone and GPS antenna assembly (for Roof Side). |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
4 - 4a |
Always |
4 to 11 kΩ |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side) |
|
3. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY) |
(a) Disconnect the F telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector from the telephone and GPS antenna assembly (for Roof Side). |
|
(b) Disconnect the E telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector from the telephone and GPS antenna cord (No. 6 antenna cord sub-assembly). |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F-4 - E-1 |
Always |
Below 1 Ω |
F-4 or E-1 - Body ground |
Always |
10 kΩ or higher |
F-4a - E-1a |
Always |
Below 1 Ω |
F-4a or E-1a - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY) |
|
4. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 6 ANTENNA CORD SUB-ASSEMBLY) |
(a) Disconnect the E telephone and GPS antenna cord (No. 6 antenna cord sub-assembly) connector from the telephone and GPS antenna cord (No. 3 antenna cord sub-assembly). |
|
(b) Disconnect the B telephone and GPS antenna cord (No. 6 antenna cord sub-assembly) connector from the telematics transceiver. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E-1 - B-1 |
Always |
Below 1 Ω |
E-1 or B-1 - Body ground |
Always |
10 kΩ or higher |
E-1a - B-1a |
Always |
Below 1 Ω |
E-1a or B-1a - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 6 ANTENNA CORD SUB-ASSEMBLY) |
|
5. |
REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (for Roof Side) |
(a) Replace the telephone and GPS antenna assembly (for Roof Side) with a known good one and check if the same problem occurs again.
Click here
OK:
The system returns to normal.
OK | ![]() |
END |
|
6. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (Telematics Transceiver).
Click here
NOTICE:
NEXT | ![]() |
PERFORM DCM ACTIVATION |
Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): Speaker Circuit
DESCRIPTION
If there is a short in a speaker circuit, the radio and display receiver assembly
detects it and stops output to the speakers.
Thus sound cannot be heard from the speakers even if there is no malfunction
in the radio and display receiver assembly, DCM (telematics transceiver)*1 or ...
Toyota CH-R Service Manual > Steering Lock System: Dtc Check / Clear
DTC CHECK / CLEAR
NOTICE:
The steering lock ECU (steering lock actuator or upper bracket assembly)
does not store history DTCs. If any DTCs are output, confirm and record
them as soon as possible. Do not turn the engine switch off or clear the
DTCs until the DTCs are confirmed ...