ASC ECU Communication Stop Mode [10/2018 - 07/2022]: Procedure
- CHECK FOR OPEN IN CAN BUS WIRE (STEREO COMPONENT EQUALIZER ASSEMBLY BRANCH WIRE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the stereo component equalizer assembly connector.
*a Front view of wire harness connector
(to Stereo Component Equalizer Assembly) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F16-4 (CANH) - F16-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F16-1 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω F16-9 (GND1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω *a Front view of wire harness connector
(to Stereo Component Equalizer Assembly) - Reconnect the cable to the negative (-) auxiliary battery terminal.NOTE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
Refer to INITIALIZATION [10/2018 - 07/2022]
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition F16-3 (+B) - Body ground Always 11 to 14 V F16-11 (IG) - Body ground Engine switch on (IG) 11 to 14 V Result
Proceed to OK NG
Result:
OK
REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY. Refer to REMOVAL [10/2018 - 07/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.