B1571
CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B1571: Manual (SOS) Switch Green Indicator Malfunction
B1571 - Manual (SOS) Switch Green Indicator Malfunction
DESCRIPTION
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 engine 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.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK DTC
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG) and wait for 10 seconds.
(d) Turn the Techstream on.
(e) Perform "HEALTH CHECK" and check for current DTCs Health Check.
Result:
B -- INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH GREEN INDICATOR CONDITION)
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY - BODY GROUND)
(a) Remove the map light assembly but do not disconnect the connector Removal.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. INSPECT MAP LIGHT ASSEMBLY (GREEN INDICATOR)
(a) Disconnect the R5 map light assembly connector.
(b) Connect 2 dry-cell batteries (1.5 V each) in series.
(c) Connect the positive (+) lead to terminal R5-28 (IND2) and the negative (-) lead to terminal R5-18 (GND3) of the map light assembly connectors.
(d) Check if the illumination for the manual (SOS) switch green indicator comes on.
OK:
Green indicator comes on.
Text in Illustration
NG -- REPLACE MAP LIGHT ASSEMBLY Removal
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY)
(a) Disconnect the J114 DCM (Telematics Transceiver) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. REPLACE DCM (TELEMATICS TRANSCEIVER)
(a) Replace the DCM (Telematics Transceiver) Removal.
NOTICE:
* The engine switch must be off.
* Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT -- PERFORM DCM ACTIVATION DCM Activation
6. INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH GREEN INDICATOR CONDITION)
(a) Confirm the green indicator status after engine switch on (IG) System Description.
Result:
B -- REPLACE DCM (TELEMATICS TRANSCEIVER)
A -- Continue to next step.
7. INSPECT MAP LIGHT ASSEMBLY (GREEN INDICATOR INPUT VOLTAGE)
(a) Remove the map light assembly but do not disconnect the connector Removal.
(b) Connect the positive lead of a voltmeter to terminal R5-28 (IND2), and the negative lead to terminal R5-18 (GND3).
(c) Measure the voltage.
Standard:
1.0 to 8.5 V for 2 seconds after the engine switch is on (IG) and red indicator has turned off.
0 V when the engine switch is off.
Text in Illustration
NG -- INSPECT DCM (TELEMATICS TRANSCEIVER) (GREEN INDICATOR OUTPUT VOLTAGE)
OK -- REPLACE MAP LIGHT ASSEMBLY Removal
8. INSPECT DCM (TELEMATICS TRANSCEIVER) (GREEN INDICATOR OUTPUT VOLTAGE)
(a) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors Removal.
(b) Connect the positive lead of a voltmeter to terminal J114-12 (IND2), and the negative lead to body ground.
(c) Measure the voltage.
Standard:
1.0 to 8.5 V for 2 seconds after the engine switch is on (IG) and red indicator has turned off.
0 V when the engine switch is off.
Text in Illustration
NG -- CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR
9. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BODY GROUND)
(a) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors Removal.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
10. REPLACE DCM (TELEMATICS TRANSCEIVER)
(a) Replace the DCM (Telematics Transceiver) Removal.
NOTICE:
* The engine switch must be off.
* Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT -- PERFORM DCM ACTIVATION DCM Activation