Lexus ES: Power Trunk Lid does not Operate Using Any Switches
DESCRIPTION
The power trunk lid controls the luggage closer motor assembly and operates the luggage closer motor assembly and luggage door closer assembly.
If the power trunk lid does not operate using any of the operations, a malfunction related to the power trunk lid operation conditions or luggage closer motor assembly are possible causes.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration.
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The power trunk lid system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure.
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This check is possible only when the "PBD Power Operation" customization setting using the Techstream is set to "ON" (initial setting is "ON").
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- Inspect fuses for circuits related to this system before performing the following procedure.
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If the luggage closer motor assembly has been removed and installed or replaced, or if any of the connectors has been disconnected, initialize the power trunk lid system.
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PROCEDURE
| 1. | CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Back Door / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > Back Door > Clear DTCs(f) Check for DTCs.
Body Electrical > Back Door > Trouble CodesOK:
DTC is not output.
| NG | .gif) | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
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| 2. | CHECK HARNESS AND CONNECTOR (LUGGAGE CLOSER MOTOR ASSEMBLY - AUXILIARY BATTERY AND BODY GROUND) |
(a) Disconnect the R7 luggage closer motor assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| R7-11 (GND) - Body ground | Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| R7-8 (IG) - Body ground | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |
| R7-10 (ECUB) - Body ground | Power switch off | 11 to 14 V |
| R7-12 (B) - Body ground | Power switch off | 11 to 14 V |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 3. | READ VALUE USING TECHSTREAM |
(a) Enter the following menus: Body Electrical / Main Body / Data List.
(b) Read the Data List according to the display on the Techstream.
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| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Trunk Main SW | Luggage door opening cancel switch assembly signal | OFF or ON | OFF: Luggage door opening cancel switch assembly off ON: Luggage door opening cancel switch assembly on | - |
| Tester Display |
|---|
| Trunk Main SW |
OK:
The Data List item changes according to the operation of the luggage door opening cancel switch assembly.
| OK | | REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY |
|
| 4. | INSPECT LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY |
(a) Remove the luggage door opening cancel switch assembly.
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(b) Inspect the luggage door opening cancel switch assembly.
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| NG | | REPLACE LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY |
|
| 5. | CHECK HARNESS AND CONNECTOR (LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) |
(a) Disconnect the G37 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G61-2 (B) - G37-27 (TMSW) | Always | Below 1 Ω |
| G61-1 (L) - Body ground | Always | Below 1 Ω |
| G61-2 (B) or G37-27 (TMSW) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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