Lexus ES: DCM Communication Stop Mode
DESCRIPTION
Detection Item | Symptom | Trouble Area |
DCM Communication Stop Mode | Any of the following conditions are met: | -
DCM (telematics transceiver) branch line or connector
-
Power source circuit of DCM (telematics transceiver)
-
DCM (telematics transceiver) ground circuit
-
DCM (telematics transceiver)
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
-
Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
-
When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.
PROCEDURE
1. | CHECK FOR OPEN IN CAN BUS LINES (DCM (TELEMATICS TRANSCEIVER) BRANCH LINE) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the G128 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | G128-25 (CANP) - G128-26 (CANN) | Cable disconnected from negative (-) battery terminal | 54 to 69 Ω | | | *a | Front view of wire harness connector (to DCM (Telematics Transceiver)) | | |
NG | | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (DCM (TELEMATICS TRANSCEIVER)) |
OK | | |
2. | CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | G128-20 (E) - Body ground | Cable disconnected from negative (-) battery terminal | Below 1 Ω | | | *a | Front view of wire harness connector (to DCM (Telematics Transceiver)) | | |
(b) Reconnect the cable to the negative (-) battery terminal.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
G128-1 (+B) - Body ground | Always | 11 to 14 V |
G128-19 (IG2) - Body ground | Engine switch on (IG) | 11 to 14 V |
NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
READ NEXT:
DESCRIPTION Detection Item Symptom Trouble Area Tilt and Telescopic ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Multiplex Tilt and Tele
DESCRIPTION Detection Item Symptom Trouble Area Parking Assist ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Panoramic View Monitor / Cir
DESCRIPTION Detection Item Symptom Trouble Area Bus Buffer ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Accessory Gateway" is indicated
SEE MORE:
PRECAUTION PRECAUTIONS FOR INSPECTING HYBRID CONTROL SYSTEM (a) Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
Inspecting the high-voltage syst
PARTS LOCATION ILLUSTRATION *1 OUTER MIRROR SWITCH ASSEMBLY *2 OUTER REAR VIEW MIRROR ASSEMBLY LH *3 OUTER REAR VIEW MIRROR ASSEMBLY RH *4 DEF RELAY *5 OUTER MIRROR LH *6 OUTER MIRROR RH *7 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - DEF FUSE
© 2016-2024 Copyright www.lexguide.net