Safety Connect System (Diagnostic Codes & Symptom Tests): Overview Lexus GS IV

DESCRIPTION

This DTC is set when the DCM (Telematics Transceiver) detects an open or short in the manual (SOS) switch red indicator circuit of the manual (SOS) switch.

The manual (SOS) switch red indicator illuminates for 2 seconds and goes off when the power switch is turned on (IG). If a malfunction in the Safety Connect System is detected, the manual (SOS) switch red indicator will illuminate.

However, the manual (SOS) switch red indicator may not illuminate when this DTC is set.

HINT

The manual (SOS) switch red indicator may not operate to indicate another DTC has been set, therefore voice guidance is provided.

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1. CHECK FOR DTC Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG) and wait for 10 seconds. Turn the Techstream on. Perform "Health Check" and check for current DTCs. Refer to «HEALTH CHECK [03/2012 - ]»(ref-600445-S05211339182014022400000) . RESULT Result Proceed to DTC B1570 and B1571 are output A DTC B1570 is output (DTC B1571 is not output) B B --> See step 5 A: Go to next step
2. INSPECT MAP LIGHT ASSEMBLY (RED INDICATOR) Disconnect the map light assembly connector. Connect 2 dry-cell batteries (1.5 V each) in series. Connect the positive (+) lead to terminal 6 (IND1) and the negative (-) lead to terminal 21 (GND3) of the map light assembly connectors. Check if the illumination for the manual (SOS) switch red indicator comes on. OK Red indicator comes on. TEXT IN ILLUSTRATION *a Component without harness connected (Map Light Assembly) NG --> See step 10 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (DCM - MAP LIGHT ASSEMBLY) Disconnect the DCM (Telematics Transceiver) connector. Disconnect the map light assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N87-11 (IND1) - Y11-6 (IND1) Always Below 1 ohms N87-26 (SIG-) - Y11-21 (GND3) Always Below 1 ohms N87-11 (IND1) - Body ground Always 10 kohms or higher N87-26 (SIG-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to DCM [Telematics Transceiver]) *b Front view of wire harness connector (to Map Light Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (Telematics Transceiver). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . WARNING: The power switch must be off. Do not replace the DCM (Telematics Transceiver) with another vehicle's. NEXT --> See step 11
5. INSPECT MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH RED INDICATOR CONDITION) Confirm the red indicator status after the power switch on (IG). Refer to «SYSTEM DESCRIPTION [03/2012 - ]»(ref-600445-S38175722242014022400000) . RESULT Result Proceed to Red indicator remains off. A Red indicator remains on. B B --> See step 9 A: Go to next step
6. CHECK MAP LIGHT ASSEMBLY (RED INDICATOR INPUT VOLTAGE) Remove the map light assembly but do not disconnect the connectors. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000) . Connect the positive lead of a voltmeter to terminal 6 (IND1), and the negative lead to terminal 21 (GND3). Measure the voltage. Standard 1.0 to 8.5 V for 2 seconds after the power switch on (IG). 0 V when the power switch is off. TEXT IN ILLUSTRATION *a Component with harness connected (Map Light Assembly) NG --> See step 7 OK --> See step 10
7. CHECK DCM (TELEMATICS TRANSCEIVER) (RED INDICATOR OUTPUT VOLTAGE) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . Connect the positive lead of a voltmeter to terminal N87-11 (IND1), and the negative lead to body ground. Measure the voltage. Standard 1.0 to 8.5 V for 2 seconds after the power switch on (IG). 0 V when the power switch is off. TEXT IN ILLUSTRATION *a Component with harness connected (DCM [Telematics Transceiver]) NG --> See step 8 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR
8. CHECK HARNESS AND CONNECTOR (DCM - BODY GROUND) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N87-11 (IND1) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component with harness connected (DCM [Telematics Transceiver]) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (Telematics Transceiver). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . NOTE: The power switch must be off. Do not replace the DCM (Telematics Transceiver) with one from another vehicle. NEXT --> See step 11
10. REPLACE MAP LIGHT ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000)
11. PERFORM DCM ACTIVATION. Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000)

This DTC is set when the DCM (Telematics Transceiver) detects an open or short in the manual (SOS) switch green indicator circuit of the manual (SOS) switch. The manual (SOS) switch green indicator illuminates after the power switch is turned on (IG).

If the Safety Connect System is not active, the manual (SOS) switch green indicator will turn off.

If the Safety Connect System is active, the manual (SOS) switch green indicator will blink while communicating with call center.

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1. CHECK FOR DTC Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG) and wait for 10 seconds. Turn the Techstream on. Perform "Health Check" and check for current DTCs. Refer to «HEALTH CHECK [03/2012 - ]»(ref-600445-S05211339182014022400000) . RESULT Result Proceed to DTC B1570 and B1571 are output A DTC B1571 is output (DTC B1570 is not output) B B --> See step 5 A: Go to next step
2. INSPECT MAP LIGHT ASSEMBLY (GREEN INDICATOR) Disconnect the map light assembly connector. Connect 2 dry-cell batteries (1.5 V each) in series. Connect the positive (+) lead to terminal 18 (IND2) and the negative (-) lead to terminal 21 (GND3) of the map light assembly connectors. Check if the illumination for the manual (SOS) switch green indicator comes on. OK Green indicator comes on. TEXT IN ILLUSTRATION *a Component without harness connected (Map Light Assembly) NG --> See step 10 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (DCM - MAP LIGHT ASSEMBLY) Disconnect the DCM (Telematics Transceiver) connector. Disconnect the map light assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N87-12 (IND2) - Y11-18 (IND2) Always Below 1 ohms N87-26 (SIG-) - Y11-21 (GND3) Always Below 1 ohms N87-12 (IND2) - Body ground Always 10 kohms or higher N87-26 (SIG-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to DCM [Telematics Transceiver]) *b Front view of wire harness connector (to Map Light Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (Telematics Transceiver). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . NOTE: The power switch must be off. Do not replace the DCM (Telematics Transceiver) with one from another vehicle. NEXT --> See step 11
5. INSPECT MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH GREEN INDICATOR CONDITION) Confirm the green indicator status after the power switch on (IG). Refer to «SYSTEM DESCRIPTION [03/2012 - ]»(ref-600445-S38175722242014022400000) . RESULT Result Proceed to Green indicator remains off. A Green indicator remains on. B B --> See step 9 A: Go to next step
6. CHECK MAP LIGHT ASSEMBLY (GREEN INDICATOR INPUT VOLTAGE) Remove the map light assembly but do not disconnect the connectors. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000) . Connect the positive lead of a voltmeter to terminal 18 (IND2), and the negative lead to terminal 21 (GND3). Measure the voltage. Standard 1.0 to 8.5 V for 2 seconds after the power switch on (IG) and red indicator has turned off. 0 V when the power switch is off. TEXT IN ILLUSTRATION *a Component with harness connected (Map Light Assembly) NG --> See step 7 OK --> See step 10
7. CHECK DCM (TELEMATICS TRANSCEIVER) (GREEN INDICATOR OUTPUT VOLTAGE) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . Connect the positive lead of a voltmeter to terminal N87-12 (IND2), and the negative lead to body ground. Measure the voltage. Standard 1.0 to 8.5 V for 2 seconds after the power switch on (IG) and red indicator has turned off. 0 V when the power switch is off. TEXT IN ILLUSTRATION *a Component with harness connected (DCM [Telematics Transceiver]) NG --> See step 8 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR
8. CHECK HARNESS AND CONNECTOR (DCM - BODY GROUND) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N87-12 (IND2) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component with harness connected (DCM [Telematics Transceiver]) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (Telematics Transceiver). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . NOTE: The power switch must be off. Do not replace the DCM (Telematics Transceiver) with one from another vehicle. NEXT --> See step 11
10. REPLACE MAP LIGHT ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000)
11. PERFORM DCM ACTIVATION. Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000)

This DTC is stored when the DCM (telematics transceiver) detects a malfunction in the telephone microphone assembly circuit.

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1. CHECK FOR DTC Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG) and wait for 10 seconds. Perform "Health Check" and check for current DTCs. Refer to «HEALTH CHECK [03/2012 - ]»(ref-600445-S05211339182014022400000) . RESULT Result Proceed to DTC B1572 is output A DTC B1572 is not output B B --> See step 7 A: Go to next step
2. CHECK MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE POWER SOURCE) Remove the map light assembly with the connector connected. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000) . Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition Y11-4 (MACC) - Body Ground Power switch on (ACC) 4 to 6 V TEXT IN ILLUSTRATION *a Component with harness connected (Map Light Assembly) NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (DCM - MAP LIGHT ASSEMBLY) Disconnect the DCM (telematics transceiver) connector. Disconnect the map light assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N87-34 (MCI+) - Y11-3 (MCO+) Always Below 1 ohms N87-35 (MCI-) - Y11-2 (MCO-) Always Below 1 ohms N87-34 (MCI+) - Body Ground Always 10 kohms or higher N87-35 (MCI-) - Body Ground Always 10 kohms or higher N87-32 (SGND) - Body Ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to DCM [Telematics Transceiver]) *b Front view of wire harness connector (to Map Light Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK TELEPHONE MICROPHONE ASSEMBLY Replace the telephone microphone assembly with a normally functioning one and check that the same problem does not occur again. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000) . OK The system returns to normal. NG --> See step 8 OK --> END (TELEPHONE MICROPHONE ASSEMBLY IS DEFECTIVE)
5. CHECK DCM (TELEMATICS TRANSCEIVER) (TELEPHONE MICROPHONE POWER SOURCE) Remove the DCM (telematics transceiver) with the connector connected. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition N87-33 (MCVD) - Body Ground Power switch on (ACC) 4 to 6 V TEXT IN ILLUSTRATION *a Component with harness connected (DCM [Telematics Transceiver]) NG --> See step 6 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR
6. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (telematics transceiver). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . NOTE: The power switch must be off. Do not replace the DCM (telematics transceiver) with one from another vehicle. NEXT --> See step 9
7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
8. REPLACE MAP LIGHT ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000)
9. PERFORM DCM ACTIVATION. Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000)

This DTC is stored when the DCM (telematics transceiver) detects an open or short in the telephone and GPS antenna circuit. The DCM (telematics transceiver) sends and receives signals at a radio frequency of between 824 and 894 MHz or 1850 and 1990 MHz through the telephone and GPS antenna.

HINT

Refer to "Parts Location" for the installation location of the telephone and GPS antenna cord. Refer to PARTS LOCATION [03/2012 - ] .

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1. CHECK FOR DTC Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG) and wait for 10 seconds. Perform "Health Check" and check for current DTCs. Refer to «HEALTH CHECK [03/2012 - ]»(ref-600445-S05211339182014022400000) . RESULT Result Proceed to DTC B1573 or B15CB is output A DTC B1573 and B15CB is not output B B --> See step 8 A: Go to next step
2. INSPECT TELEPHONE AND GPS ANTENNA (ROOF ANTENNA ASSEMBLY) Disconnect the telephone and GPS antenna connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 3a Always 4 to 11 kohms TEXT IN ILLUSTRATION *a Telephone and GPS Antenna NG --> See step 9 OK: Go to next step
3. INSPECT NO. 3 ANTENNA CORD SUB-ASSEMBLY Disconnect the No. 3 antenna cord sub-assembly from telephone and GPS antenna connector. Disconnect the No. 3 antenna cord sub-assembly from No. 2 antenna cord sub-assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A-3 - B-1 Always Below 1 ohms A-3a - B-1a Always Below 1 ohms A-3 - Body ground Always 10 kohms or higher A-3a - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a No. 3 Antenna Cord Sub-assembly NG --> See step 11 OK: Go to next step
4. INSPECT NO. 2 ANTENNA CORD SUB-ASSEMBLY Disconnect the No. 2 antenna cord sub-assembly from No. 3 antenna cord sub-assembly. Disconnect the No. 2 antenna cord sub-assembly from wire harness. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C-1 - D-3 (TEL1) Always Below 1 ohms C-1a - D-3a Always Below 1 ohms C-1 - Body ground Always 10 kohms or higher C-1a - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a No. 2 Antenna Cord Sub-assembly NG --> See step 12 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (NO. 2 ANTENNA CORD SUB-ASSEMBLY - DCM) Disconnect the N141 No. 2 antenna cord sub-assembly connector. Disconnect the N140 DCM (telematics transceiver) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N141-3 (TEL1) - N140-1 (TEL2) Always Below 1 ohms N141-3 (TEL1) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 2 Antenna Cord Sub-assembly) *b Front view of wire harness connector (to DCM [Telematics Transceiver]) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK TELEPHONE AND GPS ANTENNA (ROOF ANTENNA ASSEMBLY) Replace the telephone and GPS antenna with a normally functioning one and check if the same problem occurs again. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S40843678882014022400000) . OK The system returns to normal. NG --> See step 7 OK --> END (TELEPHONE AND GPS ANTENNA IS DEFECTIVE)
7. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (telematics transceiver). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . NOTE: The power switch must be off. Do not replace the DCM (telematics transceiver) with one from another vehicle. NEXT --> See step 10
8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
9. REPLACE TELEPHONE AND GPS ANTENNA (ROOF ANTENNA ASSEMBLY). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S40843678882014022400000)
10. PERFORM DCM ACTIVATION. Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000)
11. REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S29296524502014022400000)
12. REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S29296524502014022400000)

If GPS satellite signals cannot be acquired for 16 consecutive kilometers (10 consecutive miles), this DTC is stored.

This DTC is stored when an error in the EEPROM or PLL IC is detected during the DCM (telematics transceiver) self-check. The EEPROM (Electrically Erasable Programmable Read-Only Memory) stores the various data to operate the Safety Connect System. The PLL IC (Phase-Locked Loop Integrated Circuit) oscillates the telephone radio frequency.

This DTC is stored when the DCM (telematics transceiver) detects an open or short in the telephone and GPS antenna circuit. The DCM (telematics transceiver) receives signals at a radio frequency of between 1574.42 and 1576.42 MHz through the telephone and GPS antenna. The cable is a 50 ohms coaxial cable.

HINT

Refer to "Parts Location" for the installation location of the telephone and GPS antenna cord. Refer to PARTS LOCATION [03/2012 - ] .

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1. CHECK FOR DTC Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG) and wait for 10 seconds. Perform "Health Check" and check for current DTCs. Refer to «HEALTH CHECK [03/2012 - ]»(ref-600445-S05211339182014022400000) . RESULT Result Proceed to DTC B15C0 or B15C1 is output A DTC B15C0 and B15C1 is not output B B --> See step 10 A: Go to next step
2. INSPECT TELEPHONE AND GPS ANTENNA (ROOF ANTENNA ASSEMBLY) Disconnect the telephone and GPS antenna connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 - 2a Always 130 to 200 ohms TEXT IN ILLUSTRATION *a Telephone and GPS Antenna NG --> See step 14 OK: Go to next step
3. INSPECT NO. 3 ANTENNA CORD SUB-ASSEMBLY Disconnect the No. 3 antenna cord sub-assembly from telephone and GPS antenna connector. Disconnect the No. 3 antenna cord sub-assembly from No. 2 antenna cord sub-assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A-2 - B-2 Always Below 1 ohms A-2a - B-2a Always Below 1 ohms A-2 - Body ground Always 10 kohms or higher A-2a - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a No. 3 Antenna Cord Sub-assembly NG --> See step 12 OK: Go to next step
4. INSPECT NO. 2 ANTENNA CORD SUB-ASSEMBLY Disconnect the No. 2 antenna cord sub-assembly from No. 3 antenna cord sub-assembly. Disconnect the No. 2 antenna cord sub-assembly from antenna cord sub-assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C-2 - D-2 Always Below 1 ohms C-2a - D-2a Always Below 1 ohms C-2 - Body ground Always 10 kohms or higher C-2a - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a No. 2 Antenna Cord Sub-assembly NG --> See step 13 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (NO. 2 ANTENNA CORD SUB-ASSEMBLY - ANTENNA DIVIDER) Disconnect the N141 No. 2 antenna cord sub-assembly connector. Disconnect the N142 antenna divider connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N141-2 (GPS1) - N142-6 (GPS2) Always Below 1 ohms N141-2 (GPS1) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 2 Antenna Cord Sub-assembly) *b Front view of wire harness connector (to Antenna Divider) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. INSPECT ANTENNA DIVIDER Remove the antenna divider. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S29296524502014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 5 (GPSD2)- 6 (GPS2) Always Below 1 ohms NG --> See step 15 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (ANTENNA DIVIDER - DCM) Disconnect the N142 antenna divider connector. Disconnect the N144 DCM (telematics transceiver) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N142-5 (GPSD2) - N144-1 (GPSD1) Always Below 1 ohms N142-5 (GPSD2) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Antenna Divider) *b Front view of wire harness connector (to DCM [Telematics Transceiver]) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK TELEPHONE AND GPS ANTENNA (ROOF ANTENNA ASSEMBLY) Replace the telephone and GPS antenna with a normally functioning one and check if the same problem occurs again. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S40843678882014022400000) . OK The system returns to normal. NG --> See step 9 OK --> END (TELEPHONE AND GPS ANTENNA IS DEFECTIVE)
9. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (telematics transceiver). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . NOTE: The power switch must be off. Do not replace the DCM (telematics transceiver) with one from another vehicle. NEXT --> See step 11
10. CHECK FOR INTERMITTENT PROBLEMS. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600412-S12576599882014022400000)
11. PERFORM DCM ACTIVATION. Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000)
12. REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S29296524502014022400000)
13. REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S29296524502014022400000)
14. REPLACE TELEPHONE AND GPS ANTENNA (ROOF ANTENNA ASSEMBLY). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S40843678882014022400000)
15. REPLACE ANTENNA DIVIDER. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S29296524502014022400000)

If the DCM (telematics transceiver) detects an error in the communication between the DCM (telematics transceiver) and the center airbag sensor assembly as a result of the DCM (telematics transceiver) self-check, this DTC will be set.

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This DTC is stored when the DCM (telematics transceiver) detects an open or short circuit in the manual (SOS) switch.

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1. READ VALUE USING TECHSTREAM (MANUAL [SOS] SWITCH OPERATION) Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG) and wait for 10 seconds. Enter the following menus: Body Electrical / Telematics / Data List. Check that the manual (SOS) switch condition displayed on the Techstream changes according to the manual (SOS) switch operation. TELEMATICS Tester Display Measurement Item/Range Normal Condition Diagnostic Note Emergency Switch Manual (SOS) switch / OFF or ON OFF: Manual (SOS) switch not pressed - ON: Manual (SOS) switch pressed - RESULT Result Proceed to Techstream display changes when turning manual (SOS) switch ON/OFF A Techstream display does not change when turning manual (SOS) switch ON/OFF B B --> See step 3 A: Go to next step
2. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (telematics transceiver). Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . NOTE: The power switch must be off. Do not replace the DCM (telematics transceiver) with one from another vehicle. NEXT --> See step 10
3. CHECK DCM (TELEMATICS TRANSCEIVER) (SIG1 VOLTAGE) Remove the DCM (telematics transceiver) with the connector connected. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S17503572972014022400000) . Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition N87-27 (SIG1) - N87-26 (SIG-) Power switch on (IG), manual (SOS) switch not pressed 1.4 to 1.8 V TEXT IN ILLUSTRATION *a Component with harness connected (DCM [Telematics Transceiver]) NG --> See step 5 OK: Go to next step
4. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (telematics transceiver). Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000) . NOTE: The power switch must be off. Do not replace the DCM (telematics transceiver) with one from another vehicle. NEXT --> See step 11
5. INSPECT MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH) Remove the map light assembly. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 17 (SIG1) - 21 (GND3) Manual (SOS) switch not pressed 404 to 420 ohms 17 (SIG1) - 21 (GND3) Manual (SOS) switch pressed 79 to 85 ohms NG --> See step 8 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (DCM - MAP LIGHT ASSEMBLY) Disconnect the DCM (telematics transceiver) connector. Disconnect the map light assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N87-27 (SIG1) - Y11-17 (SIG1) Always Below 1 ohms N87-26 (SIG-) - Y11-21 (GND3) Always Below 1 ohms N87-27 (SIG1) - Body ground Always 10 kohms or higher N87-26 (SIG-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to DCM [Telematics Transceiver]) *b Front view of wire harness connector (to Map Light Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. REPLACE DCM (TELEMATICS TRANSCEIVER) Replace the DCM (telematics transceiver). Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000) . NOTE: The power switch must be off. Do not replace the DCM (telematics transceiver) with one from another vehicle. NEXT --> See step 9
8. REPLACE MAP LIGHT ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600657-S10896951432014022400000)
9. PERFORM DCM ACTIVATION. Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000)
10. PERFORM DCM ACTIVATION. Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000)
11. PERFORM DCM ACTIVATION. Refer to «DCM ACTIVATION [03/2012 - ]»(ref-600445-S29232479322014022400000)

This is the power source circuit to operate the DCM (telematics transceiver).

Scheme 328

After the power switch is turned on (IG), the DCM (telematics transceiver) will enter a self-check mode. The manual (SOS) switch red indicator will illuminate for 2 seconds and turn off followed by the manual (SOS) switch green indicator illuminating and remaining on under normal operation.

If both indicators illuminate and begin to blink simultaneously, this indicates that the DCM (telematics transceiver) is in "Shipping Mode." If no DTCs are stored, both the green and red indicators will turn off after blinking. The activation sequence must be performed.

HINT

In shipping mode, the system will attempt to activate shell mode automatically every time the power switch is turned on (IG).

If the red and green indicators fail to illuminate after the power switch is turned on (IG), the vehicle does not recognize the DCM (telematics transceiver). The DCM (telematics transceiver) connectors may have been disconnected or the DCM (telematics transceiver) is malfunctioning.

After the power switch is turned on (IG), the DCM (telematics transceiver) will enter a self-check mode. The manual (SOS) switch red indicator will illuminate for 2 seconds and turn off followed by the manual (SOS) switch green indicator illuminating and remaining on under normal operation. If neither the red nor green indicators remain on, verification of the subscription should be performed.

This means that the DCM (telematics transceiver) has detected a malfunction in the Safety Connect System and stores a DTC.

This may occur when the intensity of the radio frequency was very weak, PRL updates are required or the Safety Connect System has a malfunction, and a DTC is stored.