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 |
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Rear View Monitor (RVM) (if
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Rear View Monitor shows the area
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Detecting sensor
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Rear view camera
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Wide-rear view camera
Refer to the picture above for the
detailed location of the detec ...
Toyota CH-R Service Manual > Integration Relay: Components
COMPONENTS
ILLUSTRATION
*1
NO. 1 INTEGRATION RELAY
*2
NO. 1 RELAY BLOCK COVER
...