TERMINALS OF ECU
1. CHECK POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) (w/ POWER BACK DOOR SYSTEM)
(a) Disconnect the L20 power back door ECU connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
L20-12 (B) - Body ground |
LG - Body ground |
Battery power supply |
Always |
11 to 14 V |
L20-10 (ECUB) - Body ground |
P - Body ground |
Battery power supply |
Always |
11 to 14 V |
L20-8 (IG) - Body ground |
SB - Body ground |
IG power supply |
Ignition switch ON |
11 to 14 V |
L20-8 (IG) - Body ground |
SB - Body ground |
IG power supply |
Ignition switch off |
Below 1 V |
L20-11 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Reconnect the L20 power back door ECU connector.
(d) Initialize the power back door system (See page
).
(e) Measure the voltage according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
L20-2 (DC+) - L20-1 (DC-) |
L - G |
Back door lock motor circuit |
Back door lock motor operating |
11 to 14 V |
L20-2 (DC+) - L20-1 (DC-) |
L - G |
Back door lock motor circuit |
Back door lock motor not operating |
Below 1 V |
L20-20 (FUL) - Body ground |
GR - Body ground |
Back door courtesy switch circuit |
Back door closed |
11 to 14 V |
L20-20 (FUL) - Body ground |
GR - Body ground |
Back door courtesy switch circuit |
Back door open |
Below 1 V |
L20-22 (HAF) - Body ground |
LG - Body ground |
Back door lock half-latch switch signal circuit |
Back door open → Back door closer operates → Back door closed |
Below 1 V → 11 to 14 V → Below 1 V |
L20-24 (POS) - Body ground |
P - Body ground |
Back door lock position switch signal circuit |
Back door open → Back door closer operates → Back door closed |
Below 1 V → 11 to 14 V → Below 1 V |
If the result is not as specified, the ECU may have a malfunction.
2. BACK DOOR CLOSER ECU (MULTIPLEX NETWORK DOOR ECU) (w/o POWER BACK DOOR SYSTEM)
(a) Disconnect the L21 back door closer ECU connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
L21-4 (B) - Body ground |
LG - Body ground |
Battery power supply |
Always |
11 to 14 V |
L21-16 (ECUB) - Body ground |
P - Body ground |
Battery power supply |
Always |
11 to 14 V |
L21-15 (IG) - Body ground |
SB - Body ground |
IG power supply |
Ignition switch ON |
11 to 14 V |
L21-15 (IG) - Body ground |
SB - Body ground |
IG power supply |
Ignition switch off |
Below 1 V |
L21-3 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Reconnect the L21 back door closer ECU connector.
(d) Measure the voltage according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
L21-2 (DC+) - L21-1 (DC-) |
L - G |
Back door lock motor circuit |
Back door lock motor operating |
11 to 14 V |
L21-2 (DC+) - L21-1 (DC-) |
L - G |
Back door lock motor circuit |
Back door lock motor not operating |
Below 1 V |
L21-6 (FUL) - Body ground |
GR - Body ground |
Back door courtesy switch circuit |
Back door closed |
11 to 14 V |
L21-6 (FUL) - Body ground |
GR - Body ground |
Back door courtesy switch circuit |
Back door open |
Below 1 V |
L21-5 (HAF) - Body ground |
LG - Body ground |
Back door lock half-latch switch signal circuit |
Back door open → Back door closer operates → Back door closed |
Below 1 V → 11 to 14 V → Below 1 V |
L21-7 (POS) - Body ground |
P - Body ground |
Back door lock position switch signal circuit |
Back door open → Back door closer operates → Back door closed |
Below 1 V → 11 to 14 V → Below 1 V |
If the result is not as specified, the ECU may have a malfunction.
3. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
(a) Disconnect the D49 and 2F connectors.
(b) Measure the resistance according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D49-2 (BDSU) - Body ground |
GR - Body ground |
Back door opener switch signal circuit |
Back door opener switch on |
Below 1 Ω |
D49-2 (BDSU) - Body ground |
GR - Body ground |
Back door opener switch signal circuit |
Back door opener switch off |
10 kΩ or higher |
2F-16 (GND1) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the D49 and 2F connectors.
(d) Measure the voltage according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D49-2 (BDSU) - Body ground |
GR - Body ground |
Back door opener switch signal circuit |
Back door opener switch off |
Pulse generation |
D49-2 (BDSU) - Body ground |
GR - Body ground |
Back door opener switch signal circuit |
Back door opener switch on |
Below 1 V |
If the result is not as specified, the ECU may have a malfunction.
CD cannot be Inserted / Played or CD is Ejected Right After Insertion
PROCEDURE
1.
CHECK IF A PROPER CD IS INSERTED
(a) Make sure that the CD is an audio CD or a CD with an MP3, WMA or AAC file,
and that it is not deformed, flawed, stained, deteriorated or otherwise defective.
OK:
CD is nor ...
Meter Illumination is Always Dark
DESCRIPTION
In this circuit, the meter CPU receives auto dimmer signals from the main body
ECU (driver side junction block assembly) using the CAN communication system (CAN
No. 1 Bus). When the meter CPU receives an auto dimmer signal, it dims the meter
...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is displayed during the DTC check, inspect the trouble areas
listed below for that code. For details of the code, refer to the following "See
page".
Power back door system
DTC C ...