DESCRIPTION
These DTCs are stored when the DCM (Telematics Transceiver) detects an open or a short in the telephone and GPS antenna assembly (for Front 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 Front Side).
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
B1536 |
Short in Telephone SUB Antenna Circuit |
Telephone and GPS antenna assembly (for Front Side) impedance is lower than malfunction criterion for 10 seconds when ignition switch is ON. (Short circuit) |
|
B1537 |
Open in Telephone SUB Antenna Circuit |
Telephone and GPS antenna assembly (for Front 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 B1536 or B1537 is output |
A |
DTC B1536 or B1537 is not output |
B |
B | ![]() |
CHECK FOR INTERMITTENT PROBLEMS |
|
2. |
INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY (for Front Side) |
(a) Disconnect the D telephone and GPS antenna cord (antenna cord sub-assembly) connector from the telephone and GPS antenna assembly (for Front Side). |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
2 - 2a |
Always |
4 to 11 kΩ |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (for Front Side) |
|
3. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY) |
(a) Disconnect the telephone and GPS antenna cord (antenna cord sub-assembly) connector from the telephone and GPS antenna assembly (for Front Side). |
|
(b) Disconnect the telephone and GPS antenna cord (antenna cord sub-assembly) connector from the DCM (Telematics Transceiver). |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D-2 - A-1 |
Always |
Below 1 Ω |
D-2 or A-1 - Body ground |
Always |
10 kΩ or higher |
D-2a - A-1a |
Always |
Below 1 Ω |
D-2a or A-1a - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY) |
|
4. |
REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY (for Front Side) |
(a) Replace the telephone and GPS antenna assembly (for Front Side) with a known good one and check if the same problem occurs again.
Click here
OK:
The system returns to normal.
OK | ![]() |
END |
|
5. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (Telematics Transceiver).
Click here
NOTICE:
NEXT | ![]() |
PERFORM DCM ACTIVATION |
Toyota CH-R Service Manual > Navigation System: Portable Player cannot be Registered
CAUTION / NOTICE / HINT
HINT:
Some versions of "Bluetooth" compatible audio players may not function properly,
or the functions may be limited using the radio and display receiver assembly, even
if the portable audio player itself can play files.
Click here
PROCEDURE
...
Toyota CH-R Service Manual > Occupant Classification Ecu: Removal
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration)
that must be performed after parts are removed, installed, or replaced during the
occupant detection ECU removal/installation are shown below.
Necessary Procedure After Parts Re ...