ENTRY AND START SYSTEM(for Start Function) TERMINALS OF ECU
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CHECK POWER MANAGEMENT CONTROL ECU
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Disconnect the A22, L5 and L6 connectors.
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Measure the voltage and resistance according to the value(s) in the table below.
Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item A22-2 (IG2D) - Body ground Output V - Body ground IG2 signal 20°C (68°F) 130 to 230 Ω IG2 Relay Monitor (Outside) A22-23 (STP) - Body ground Input L - Body ground Stop light switch signal Brake pedal depressed → Brake pedal released Output voltage at terminal AM21 or AM22 is -2 V or more → 1 V or less Stop Light Switch1 L5-1 (AM22) - Body ground Input W - Body ground +B power supply Power switch off 9.5 to 16 V - L6-7 (AM21) - Body ground Input Y - Body ground +B power supply Power switch off 9.5 to 16 V - L5-6 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω - L6-4 (E12) - Body ground - W-B - Body ground Ground Always Below 1 Ω - L6-24 (CA1L) - Body ground Input/Output P - Body ground CAN communication line Always 10 kΩ or higher - L6-25 (CA1H) - Body ground Input/Output V - Body ground CAN communication line Always 10 kΩ or higher - L6-17 (SSW2) - Body ground Input Y - Body ground SSW2 contact signal (backup for SSW1 and has same behavior as SSW1)
Tech Tips
Backup for SSW1. Behaves the same way as SSW1.
Power switch pushed → Power switch not pushed Below 1 Ω → 10 kΩ or higher Start Switch2 L5-7 (SSW1) - Body ground Input B - Body ground SSW1 contact signal Power switch pushed → Power switch not pushed Below 1 Ω → 10 kΩ or higher Start Switch1 L6-1 (ACCD) - Body ground Output G - Body ground ACC signal 20°C (68°F) 81.49 to 118.98 Ω ACC Relay Monitor L6-2 (IG1D) - Body ground Output B - Body ground IG1 signal 20°C (68°F) 54.32 to 79.32 Ω IG1 Relay Monitor (Outside) L6-11 (LIN2) - Body ground Input/Output L - Body ground LIN communication line Always 10 kΩ or higher - If the result is not as specified, there may be a malfunction in the wire harness.
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Reconnect the A22, L5 and L6 connectors.
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Measure the voltage and check for pulses according to the value(s) in the table below.
Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item A22-2 (IG2D) - L5-6 (E1) Output V - W-B IG2 signal Power switch on (ACC) → Power switch on (IG) 1 V or less → Output voltage at terminal AM21 or AM22 is -2 V or more IG2 Relay Monitor (Outside) L5-9 (INDW) - L5-6 (E1) Output BE - W-B Power switch indicator (orange) illumination output Brake pedal released, park (P) selected, power switch on (ACC), or on (IG) → Other than previous condition 7 V or higher → 1 V or less - A22-22 (PCON) - L5-6 (E1) Output LG - W-B P position signal Park (P) selected Pulse generation
(See waveform 1)
- A22-28 (PPOS) - L5-6 (E1) Input W - W-B P position signal Park (P) selected Pulse generation
(See waveform 1)
- L6-17 (SSW2) - L5-6 (E1) Output Y - W-B SSW2 contact signal (backup for SSW1 and has same behavior as SSW1)
Tech Tips
Backup for SSW1. Behaves the same way as SSW1.
Power switch pushed → Power switch not pushed 9 V or higher → 1 V or less Start Switch2 L5-7 (SSW1) - L5-6 (E1) Output B - W-B Power switch signal Power switch pushed → Power switch not pushed 9 V or higher → 1 V or less Start Switch1 L6-1 (ACCD) - L5-6 (E1) Output G - W-B ACC signal Power switch off → Power switch on (ACC) 1 V or less → Output voltage at terminal AM21 or AM22 is -2 V or more ACC Relay Monitor L6-2 (IG1D) - L5-6 (E1) Output B - W-B IG1 signal Power switch on (ACC) → Power switch on (IG) 1 V or less → Output voltage at terminal AM21 or AM22 is -2 V or more IG1 Relay Monitor (Outside) L5-8 (INDS) - L5-6 (E1) Output R - W-B Power switch indicator (green) illumination output Brake pedal depressed, park (P) selected 7 V or higher - L5-14 (SPDI) - L5-6 (E1) Input V - W-B Vehicle speed signal Power switch on (IG), vehicle being driven at approx. 5 km/h (3 mph) Pulse generation
(See waveform 2)
Vehicle Speed Signal L6-20 (IMO) - L5-6 (E1) Output SB - W-B ID code box communication input
(Signal input from power management control ECU to ID code box)
Power switch off 11 to 14 V
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Engine Start Request
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EFI Code Receive
Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected Pulse generation
(See waveform 3)
L6-21 (IMI) - L5-6 (E1) Input LG - W-B ID code box communication output
(Signal output from ID code box to power management control ECU)
Power switch off 11 to 14 V Power switch on (IG) Pulse generation
(See waveform 3)
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Using an oscilloscope, check the signal waveform of the ECU.
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Waveform 1
Tester Connection CH1: A22-22 (PCON) - L5-6 (E1)
CH2: A22-28 (PPOS) - L5-6 (E1)
Tool Setting 10 V/DIV., 10 ms./DIV. Vehicle Condition Park (P) selected -
Waveform 2
Tester Connection L5-14 (SPDI) - L5-6 (E1) Tool Setting 5 V/DIV., 10 ms./DIV. Vehicle Condition Power switch on (IG), vehicle being driven at approx. 5 km/h (3 mph) Tech Tips
The wavelength becomes shorter as the vehicle speed increases.
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Waveform 1 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 510 ms Measurement Condition Item Content Tester Connection L6-20 (IMO) - L5-6 (E1) Tool Setting 2 V/DIV., 200 ms./DIV. Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected -
Waveform 2 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 510 ms Measurement Condition Item Content Tester Connection L6-21 (IMI) - L5-6 (E1) Tool Setting 2 V/DIV., 200 ms./DIV. Condition Power switch on (IG)
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