DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
DTCs are displayed by blinking of the SRS warning light.
Tech Tips
When each warning light stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.
A DTC output mode signal is transmitted through the CAN communication system to each ECU including the center airbag sensor assembly. Thus when all systems do not enter DTC output mode, there may be an power management control ECU (HV CPU) malfunction.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
CHECK WIRE HARNESS (TC OF DLC3 - TC OF POWER MANAGEMENT CONTROL ECU (HV CPU))
Turn the power switch off.
*1 | Front view of wire harness connector (to DLC3) |
*2 | Front view of wire harness connector (to Power Management Control ECU (HV CPU)) |
Disconnect the connector from the power management control ECU (HV CPU).
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
NG |
REPLACE WIRE HARNESS |
OK |
CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)
*1 | Front view of wire harness connector (to DLC3) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
NG |
REPLACE WIRE HARNESS |
OK |
CHECK WIRE HARNESS (TC OF DCL3 - BODY GROUND)
*1 | Front view of wire harness connector (to DLC3) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
NG |
REPLACE WIRE HARNESS OR EACH ECU |
OK |
REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here