TERMINALS OF ECU
CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY LH
(a) Disconnect the c5 and c6 position control ECU and switch assembly LH connectors.
(b) 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 | Battery power supply | Always | 11 to 14 V |
c6-12 (SYSB) - c5-2 (GND) | P - W-B | System power source | Always | 11 to 14 V |
c6-3 (IG) - c5-2 (GND) | R - W-B | Ignition power supply | Engine switch on (IG) | 11 to 14 V |
c6-3 (IG) - c5-2 (GND) | R - W-B | Ignition power supply | Engine 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 |
(c) Reconnect the c5 and c6 position control ECU and switch assembly LH connectors.
(d) 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 | Always | 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)
(a) Disconnect the N4 outer mirror control ECU assembly (driver door) connector.
(b) 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 | Battery power supply | Always | 11 to 14 V |
N4-14 (BDR) - N4-7 (GND) | L - W-B | Battery power supply | Always | 11 to 14 V |
N4-5 (SIG) - N4-7 (GND) | Y - W-B | Ignition power supply | Engine 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 |
(c) Reconnect the N4 outer mirror control ECU assembly (driver door) connector.
(d) 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
(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Click here
(b) 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 | - | Battery power supply | Always | 11 to 14 V |
MB-32 (IG) - Body ground | - | Ignition power supply | Engine switch on (IG) | 11 to 14 V |
MB-32 (IG) - Body ground | - | Ignition power supply | Engine switch off | Below 1 V |
MB-30 (ACC) - Body ground | - | Ignition power supply | Engine switch on (ACC) | 11 to 14 V |
MB-30 (ACC) - Body ground | - | Ignition power supply | Engine 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.
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