Terminals Of Ecu [10/2015 - ]
- CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY LH
- Disconnect the c5 and c6 position control ECU and switch assembly LH connectors.
- Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
Tester Connection Wiring Color Terminal Description Condition Specified Condition c5-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω c5-7 (+B) - c5-2 (GND) W*1, R*2 - W-B Auxiliary battery power supply Power switch off 11 to 14 V c6-12 (SYSB) - c5-2 (GND) P - W-B System power source Power switch off 11 to 14 V c6-3 (IG) - c5-2 (GND) R - W-B Ignition power supply Power switch on (IG) 11 to 14 V c6-3 (IG) - c5-2 (GND) R - W-B Ignition power supply Power switch off Below 1 V c6-10 (DBCL) - Body ground GR - Body ground Driver seat belt buckle switch signal Driver seat belt fastened Below 1 Ω c6-10 (DBCL) - Body ground GR - Body ground Driver seat belt buckle switch signal Driver seat belt unfastened 10 kΩ or higher - *1: w/o Seat Variable Cushion Switch
- *2: w/ Seat Variable Cushion Switch
- Reconnect the c5 and c6 position control ECU and switch assembly LH connectors.
- Measure the voltage and resistance according to the value(s) in the table below.
Tester Connection Wiring Color Terminal Description Condition Specified Condition c5-6 (+B2) - c5-2 (GND) SB - W-B Lumbar support adjuster power source Power switch off 11 to 14 V c5-1 (GND2) - Body ground W-B - Body ground Lumbar support adjuster ground Always Below 1 Ω c5-3 (SLD+) - c5-2 (GND) L - W-B Slide motor signal (forward) Slide switch off Below 1 V Slide switch on (Forward) 11 to 14 V c5-4 (SLD-) - c5-2 (GND) GR - W-B Slide motor signal (rearward) Slide switch off Below 1 V Slide switch on (Rearward) 11 to 14 V c5-5 (FRV-) - c5-2 (GND) R - W-B Front vertical motor signal (downward) Front vertical switch off Below 1 V Front vertical switch on (Downward) 11 to 14 V c5-8 (FRV+) - c5-2 (GND) B - W-B Front vertical motor signal (upward) Front vertical switch off Below 1 V Front vertical switch on (Upward) 11 to 14 V c5-9 (RCL+) - c5-2 (GND) P - W-B Reclining motor signal (forward) Reclining switch off Below 1 V Reclining switch on (Forward) 11 to 14 V c5-11 (RCL-) - c5-2 (GND) LG - W-B Reclining motor signal (rearward) Reclining switch off Below 1 V Reclining switch on (Rearward) 11 to 14 V c5-10 (LFT+) - c5-2 (GND) V - W-B Lifter motor signal (upward) Lifter switch off Below 1 V Lifter switch on (Upward) 11 to 14 V c5-12 (LFT-) - c5-2 (GND) G - W-B Lifter motor signal (downward) Lifter switch off Below 1 V Lifter switch on (Downward) 11 to 14 V c6-1 (SGND) - c5-2 (GND) BR - W-B Position sensor ground Always Below 1 Ω c6-5 (SSRS) - c6-1 (SGND) G- BR Slide position signal Slide function operating 4.8 to 5.1 V
- CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR)
- Disconnect the N4 outer mirror control ECU assembly (driver door) connector.
- Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
Tester Connection Wiring Color Terminal Description Condition Specified Condition N4-6 (CPUB) - N4-7 (GND) L - W-B Auxiliary battery power supply Power switch off 11 to 14 V N4-14 (BDR) - N4-7 (GND) L - W-B Auxiliary battery power supply Power switch off 11 to 14 V N4-5 (SIG) - N4-7 (GND) Y - W-B Ignition power supply Power switch on (IG) 11 to 14 V N4-5 (SIG) - N4-7 (GND) Y - W-B Ignition power supply Always Below 1 V N4-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω - Reconnect the N4 outer mirror control ECU assembly (driver door) connector.
- Measure the voltage according to the value(s) in the table below.
Tester Connection Wiring Color Terminal Description Condition Specified Condition N4-1 (MM) - N4-7 (GND) W - W-B SET switch signal for seat memory switch LH SET switch on Below 1 V SET switch off 11 to 14 V N4-2 (M1) - N4-7 (GND) G - W-B M1 switch signal for seat memory switch LH M1 switch on Below 1 V M1 switch off 11 to 14 V N4-3 (M2) - N4-7 (GND) V - W-B M2 switch signal for seat memory switch LH M2 switch on Below 1 V M2 switch off 11 to 14 V N4-4 (M3) - N4-7 (GND) R - W-B M3 switch signal for seat memory switch LH M3 switch on Below 1 V M3 switch off 11 to 14 V
- CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Refer to REMOVAL [10/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 03/2018] , or refer to REMOVAL [03/2018 - 08/2019] , or refer to REMOVAL [08/2019 - ]
- Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
Tester Connection Wiring Color Terminal Description Condition Specified Condition MB-31 (BECU) - Body ground - Auxiliary battery power supply Power switch off 11 to 14 V MB-32 (IG) - Body ground - Ignition power supply Power switch on (IG) 11 to 14 V MB-32 (IG) - Body ground - Ignition power supply Power switch off Below 1 V MB-30 (ACC) - Body ground - Ignition power supply Power switch on (ACC) 11 to 14 V MB-30 (ACC) - Body ground - Ignition power supply Power switch off Below 1 V MB-11 (GND1) - Body ground - Ground Always Below 1 Ω J8-6 (FLCY) - Body ground P - Body ground Front door courtesy light switch assembly (driver door) input Front door LH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω If the result is not as specified, there may be a malfunction in the wire harness.
- Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.