ASC ECU Communication Stop Mode [11/2017 - ]: Procedure
- CHECK FOR OPEN IN CAN BUS LINES (STEREO COMPONENT EQUALIZER ASSEMBLY BRANCH LINE)
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the O31 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 O31-4 (CANH) - O31-12 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Result
Result OK NG
Result:
NG
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (STEREO COMPONENT EQUALIZER ASSEMBLY)
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to Stereo Component Equalizer Assembly)Standard Resistance
Tester Connection Condition Specified Condition O31-1 (GND) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω O31-9 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω - Reconnect the cable to the negative (-) battery terminal.
- Measure the voltage according to the value(s) in the table below.
*a Front view of wire harness connector
(to Stereo Component Equalizer Assembly)Standard Voltage
Tester Connection Condition Specified Condition O31-3 (+B) - Body ground Always 11 to 14 V O31-11 (IG) - Body ground Engine switch on (IG) 11 to 14 V Result
Result OK NG
Result:
OK
REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY. Refer to REMOVAL [09/2014 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.