2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 121

1. INSPECT DCM (TELEMATICS TRANSCEIVER) (SIG1 VOLTAGE)

(a) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors See: Accessories and Optional

Equipment/Emergency Contact Module/Service and Repair/Removal.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

NG -- INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH)

OK -- Continue to next step.

2. REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver) See: Accessories and Optional Equipment/Emergency Contact Module/Service and

Repair/Removal.

NOTICE:

* The engine switch must be off.

* Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

NEXT -- PERFORM DCM ACTIVATION See: Accessories and Optional Equipment/Emergency Contact Module/Testing and

Inspection/Scan Tool Testing and Procedures/DCM Activation

3. INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH)

(a) Disconnect the T10 map light assembly connector.

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

Standard Resistance:

Text in Illustration

NG -- REPLACE MAP LIGHT ASSEMBLY See: Accessories and Optional Equipment/Emergency Contact Button/Service and

Repair/Manual (SOS) Switch/Removal

OK -- Continue to next step.