Combination Meter ECU Communication Stop Mode [09/2022 - 11/2022]: Procedure
WARNING: This page is about a different car, the 2023 Toyota GR Corolla and 2023 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR OPEN IN CAN BUS LINES (COMBINATION METER ASSEMBLY MAIN LINE)
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the I4 combination meter assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition I4-9 (CANH) - I4-25 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω *a Front view of wire harness connector
(to Combination Meter Assembly)Result
Result OK NG
Result:
NG
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (COMBINATION METER 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.
Standard Resistance
Tester Connection Condition Specified Condition I4-19 (EP) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω I4-23 (ES) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω *a Front view of wire harness connector
(to Combination Meter Assembly) - Reconnect the cable to the negative (-) battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition I4-22 (B) - Body ground Always 11 to 14 V I4-38 (IG+) - Body ground Ignition switch ON 11 to 14 V Result
Result OK NG
Result:
OK
REPLACE COMBINATION METER ASSEMBLY
Refer to REMOVAL [09/2022 - 11/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.