Air Conditioning Amplifier Communication Stop Mode [09/2017 - 05/2019]: Procedure
- CHECK FOR OPEN IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY BRANCH WIRE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the air conditioning amplifier assembly connector.
*a Front view of wire harness connector
(to Air Conditioning Amplifier Assembly) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition I50-11 (CANH) - I50-12 (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.
*a Front view of wire harness connector
(to Air Conditioning Amplifier Assembly)Standard Resistance
Tester Connection Condition Specified Condition I50-14 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω - 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 [09/2017 - 05/2019]
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition I50-1 (IG+) - Body ground Power switch on (IG) 11 to 14 V Power switch off Below 1 V I50-21 (B) - Body ground Power switch off 11 to 14 V Result
Proceed to OK NG
Result:
OK
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to REMOVAL [09/2017 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.