SRS Warning Light Does Not Come On

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: SRS Warning Light does not Come ON

SRS Warning Light does not Come ON

DESCRIPTION

Refer to "SRS Warning Light Remains ON" [1][2]SRS Warning Light Remains On.

WIRING DIAGRAM

Refer to "SRS Warning Light Remains ON" [1][2]SRS Warning Light Remains On.

INSPECTION PROCEDURE
NOTICE:
- w/ Navigation system:
After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
- When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

PROCEDURE

1. CHECK BATTERY
(a) Measure the voltage of the battery.
Standard voltage:
11 to 14 V
NG -- REPLACE OR RECHARGE BATTERY
OK -- Continue to next step.
2. CHECK CONNECTOR
(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the combination meter.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTOR PROPERLY
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (SOURCE VOLTAGE OF COMBINATION METER)





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the E77 connector from the combination meter.
(d) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK SRS WARNING LIGHT (SHORT TO GROUND)
(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Connect the connector to the combination meter.
(d) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(e) Turn the engine switch on (IG).
(f) Check the SRS warning light condition.
NOTICE:
Make sure that nobody is in the vehicle.

OK:
After the primary check period, the SRS warning light goes off for approximately 10 seconds and then remains on.
HINT:
The primary check period is approximately 6 seconds after the engine switch is turned on (IG).

NG -- GO TO METER / GAUGE SYSTEM
OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY