Terminals Of ECM [11/2023 - ]
WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- ECM
HINT:
The standard voltage and resistance of each ECM terminal is shown in the table below.
In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage or resistance between the terminals is shown under "Specified Condition".
Use the illustration above as a reference for the ECM terminals.
Terminal No. (Symbol) Terminal Description Condition Specified Condition A83-9 (E1) - Body ground Ground Always Below 1 Ω A83-14 (STP) - A83-9 (E1) Stop light switch signal Brake pedal depressed 7.5 to 14 V Brake pedal released Below 1 V A83-15 (NSW) - A83-9 (E1) Park/neutral position switch signal Ignition switch ON and shift lever in P or N Below 1 V Ignition switch ON and shift lever not in P or N 11 to 14 V A83-16 (STA) - A83-9 (E1) Starter signal Cranking (shift lever in P or N, ignition switch ON (START)) 11 to 14 V Ignition switch ON and shift lever in P or N Below 2 V A83-25 (CANL) - A83-9 (E1) CAN communication line Ignition switch ON Pulse generation A83-26 (CANH) - A83-9 (E1) CAN communication line Ignition switch ON Pulse generation A83-28 (PWMS) - A83-9 (E1) Drive mode select switch (combination switch assembly) signal Ignition switch ON and drive mode select switch in neutral position 11 to 14 V Ignition switch ON and drive mode select switch pushed forward Below 1.5 V A83-29 (SPCN) - A83-9 (E1) Drive mode select switch (combination switch assembly) signal Ignition switch ON and drive mode select switch in neutral position 11 to 14 V Ignition switch ON and drive mode select switch pulled rearward Below 1.5 V A83-30 (SFTD) - A83-9 (E1) Down-shift switch signal Ignition switch ON 11 to 14 V Ignition switch ON and shift lever held in "-" (Down shift) Below 1 V A83-31 (SFTU) - A83-9 (E1) Up-shift switch signal Ignition switch ON 11 to 14 V Ignition switch ON and shift lever held in "+" (Up shift) Below 1 V A83-39 (D) - A83-9 (E1) D shift position switch signal Ignition switch ON and shift lever in D or M 11 to 14 V Ignition switch ON and shift lever not in D or M Below 1 V A83-40 (N) - A83-9 (E1) N shift position switch signal Ignition switch ON and shift lever in N 11 to 14 V Ignition switch ON and shift lever not in N Below 1 V A83-41 (R) - A83-9 (E1) R shift position switch signal Ignition switch ON and shift lever in R 11 to 14 V Ignition switch ON and shift lever not in R Below 1 V A83-42 (P) - A83-9 (E1) P shift position switch signal Ignition switch ON and shift lever in P 11 to 14 V Ignition switch ON and shift lever not in P Below 1 V A83-43 (S) - A83-9 (E1) M shift position switch signal Ignition switch ON and shift lever in M 11 to 14 V Ignition switch ON and shift lever not in M Below 1 V C89-1 (BATT) - A83-9 (E1) Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V C89-11 (+B2) - A83-9 (E1) Power source of ECM Ignition switch ON 11 to 14 V C89-12 (+B) - A83-9 (E1) Power source of ECM Ignition switch ON 11 to 14 V C89-17 (SL5+) - C89-18 (SL5-) Solenoid (SL5) valve signal 2nd or 8th gear selected Pulse generation C89-19 (SL3+) - C89-20 (SL3-) Solenoid (SL3) valve signal 3rd, 7th or Reverse gear selected Pulse generation C89-26 (SLT+) - C89-25 (SLT-) Solenoid (SLT) valve signal Engine idling Pulse generation C89-28 (SL6+) - C89-27 (SL6-) Solenoid (SL6) valve signal 1st or Reverse gear selected Pulse generation C89-29 (SL4+) - C89-30 (SL4-) Solenoid (SL4) valve signal 4th or 6th gear selected Pulse generation C89-31 (SL2+) - C89-32 (SL2-) Solenoid (SL2) valve signal 5th, 6th, 7th or 8th gear selected Pulse generation C89-33 (SL1+) - C89-34 (SL1-) Solenoid (SL1) valve signal 1st, 2nd, 3rd, 4th or 5th gear selected Pulse generation C89-35 (SLU+) - C89-36 (SLU-) Solenoid (SLU) valve signal Lock-up ON Pulse generation C89-40 (THO1) - C89-41 (ETHO) ATF temperature sensor signal ATF temperature 115°C (239°F) or higher Below 1.5 V C89-42 (SL) - A83-9 (E1) Solenoid (SL) valve signal - Shift lever in P, R or N
- Lock-up OFF (shift lever in D)
11 to 14 V C89-51 (NCO) - A83-9 (E1) Transmission Revolution Sensor (NC) signal Vehicle being driven Pulse generation C89-52 (NCB) - A83-9 (E1) Power source for sensor
(specific voltage)Ignition switch ON 11 to 14 V C89-53 (NTO) - A83-9 (E1) Transmission Revolution Sensor (NT) signal Engine idling (shift lever in P or N) Pulse generation C89-54 (NTB) - A83-9 (E1) Power source for sensor
(specific voltage)Ignition switch ON 11 to 14 V