Combination Meter ECU Communication Stop Mode: Procedure
- CHECK CAN BUS WIRE FOR DISCONNECTION (COMBINATION METER MAIN WIRE)
- Turn the power switch off.
- Disconnect the combination meter connector.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
*1 Front view of wire harness connector
(to Combination Meter) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Switch Condition Specified Condition L27-10 (CANH) - L27-11 (CANL) Power switch off 108 to 132 Ω
NG → REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (COMBINATION METER ECU)
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)
- Measure the voltage according to the value(s) in the table below.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard Voltage
Tester Connection Condition Specified Condition L27-19 (IG+) - Body ground Power switch on (IG) 11 to 14 V L27-18 (B) - Body ground Always 11 to 14 V Callouts For Fig. 92*1 Front view of wire harness connector
(to Combination Meter)
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK: Go to next step
- Measure the voltage according to the value(s) in the table below.
- CHECK HARNESS AND CONNECTOR (GROUND TERMINAL)
- Measure the resistance according to the value(s) in the table below.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard Resistance
Tester Connection Condition Specified Condition L27-30 (ES) - Body ground Always Below 1 Ω Callouts For Fig. 93*1 Front view of wire harness connector
(to Combination Meter)
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)
OK → See step 4
- Measure the resistance according to the value(s) in the table below.
- REPLACE METER CIRCUIT PLATE NO. 3 (COMBINATION METER ECU). Refer to DISASSEMBLY