Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM10000000263TS |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [09/2022 -
] |
Title: WIPER / WASHER: WIPER AND WASHER SYSTEM (for Gasoline Model): B235787; Wiper Module Missing Message; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ] |
DTC
|
B235787
|
Wiper Module Missing Message
|
DESCRIPTION
The main body ECU (multiplex network body ECU) and windshield wiper relay communicate via CXPI communication. The main body ECU (multiplex network body ECU) stores this DTC if communication becomes abnormal.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
Memory
|
DTC Output from
|
B235787
|
Wiper Module Missing Message
|
Detection condition:
-
Battery voltage is 9.5 V or more
Malfunction Status:
-
Communication malfunction between the main body ECU (multiplex network body ECU) and windshield wiper relay assembly
|
-
Windshield wiper relay assembly
-
Main body ECU (multiplex network body ECU)
-
Harness or connector
-
WIPER relay
-
Power distribution box assembly
|
○
|
Main Body
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
Inspect the fuses of circuits related to this system before performing the following procedure.
-
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*
Click here
PROCEDURE
1.
|
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
|
(a) Disconnect the A56 windshield wiper relay assembly connector.
(b) Disconnect the 8F power distribution box assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A56-4 (MPX1) - 8F-9
|
Always
|
Below 1 Ω
|
A56-4 (MPX1) or 8F-9 - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
(a) Check vehicle type.
Result
|
Proceed to
|
except G16E-GTS
|
A
|
for G16E-GTS
|
B
|
A
|
|
|
3.
|
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
(a) Check for voltage and pulses according to the value(s) in the table below.
Standard Voltage and Pulse:
Tester Connection
|
Condition
|
Specified Condition
|
8F-9 - Body ground
|
Ignition switch ON
|
Pulse generation
|
Ignition switch off
|
Below 1 V
|
|
|
*a
|
Component without harness connected
(Power Distribution Box Assembly)
|
|
|
OK
|
|
|
4.
|
PERFORM ACTIVE TEST USING TECHSTREAM
|
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the GTS.
Body Electrical > Main Body > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Wiper Power Relay
|
Function to operate the WIPER relay
|
OFF or ON
|
-
|
Body Electrical > Main Body > Active Test
Tester Display
|
Wiper Power Relay
|
OK:
WIPER relay operates normally.
OK
|
|
|
5.
|
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - BODY GROUND)
|
(a) Disconnect the A55 windshield wiper relay assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A55-3 (E) - Body ground
|
Always
|
Below 1 Ω
|
A56-5 (ES) - Body ground
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
6.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE - WINDSHIELD WIPER RELAY ASSEMBLY)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
A55-8 (+B) - Body ground
|
Ignition switch ON
|
11 to 14 V
|
Less than approximately 60 seconds after ignition switch turned off
|
11 to 14 V
|
Approximately 60 seconds or more after ignition switch turned off
|
Below 1 V
|
NG
|
|
|
(a) Inspect the WIPER relay.
Click here
NG |
|
REPLACE WIPER RELAY
|
OK
|
|
|
8.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE - WIPER RELAY)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
5 (WIPER relay) - Body ground
|
Ignition switch off
|
11 to 14 V
|
|
|
*1
|
No. 1 Engine Room Relay Block Assembly
|
|
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
9.
|
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - WIPER RELAY)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A55-8 (+B) - 3 (WIPER relay)
|
Always
|
Below 1 Ω
|
A55-8 (+B) or 3 (WIPER relay) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
(a) Inspect the WIPER relay.
Click here
NG |
|
REPLACE WIPER RELAY
|
OK
|
|
|
11.
|
CHECK HARNESS AND CONNECTOR (WIPER RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
|
(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
except Sedan:
Tester Connection
|
Condition
|
Specified Condition
|
1 (WIPER relay) - I85-6 (WPS)
|
Always
|
Below 1 Ω
|
1 (WIPER relay) or I85-6 (WPS) - Body ground
|
Always
|
10 kΩ or higher
|
Standard Resistance:
for Sedan:
Tester Connection
|
Condition
|
Specified Condition
|
2 (WIPER relay) - I85-6 (WPS)
|
Always
|
Below 1 Ω
|
2 (WIPER relay) or I85-6 (WPS) - Body ground
|
Always
|
10 kΩ or higher
|
|
|
*1
|
NO. 1 ENGINE ROOM RELAY BLOCK ASSEMBLY
|
|
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
12.
|
CHECK HARNESS AND CONNECTOR (WIPER RELAY - BODY GROUND)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
except Sedan:
Tester Connection
|
Condition
|
Specified Condition
|
2 (WIPER relay) - Body ground
|
Always
|
Below 1 Ω
|
Standard Resistance:
for Sedan:
Tester Connection
|
Condition
|
Specified Condition
|
1 (WIPER relay) - Body ground
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
13.
|
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
(a) Check for voltage and pulses according to the value(s) in the table below.
Standard Voltage and Pulse:
Tester Connection
|
Condition
|
Specified Condition
|
8F-9 - Body ground
|
Ignition switch ON
|
Pulse generation
|
Ignition switch off
|
Below 1 V
|
|
|
*a
|
Component without harness connected
(Power Distribution Box Assembly)
|
|
|
OK
|
|
|
14.
|
PERFORM ACTIVE TEST USING TECHSTREAM
|
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Wiper Power Relay
|
Function to operate the IG1 NO. 3 relay
|
OFF or ON
|
-
|
Body Electrical > Main Body > Active Test
Tester Display
|
Wiper Power Relay
|
OK:
IG1 NO. 3 relay operates normally.
OK
|
|
|
15.
|
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - BODY GROUND)
|
(a) Disconnect the A55 windshield wiper relay assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A55-3 (E) - Body ground
|
Always
|
Below 1 Ω
|
A56-5 (ES) - Body ground
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
16.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE - WINDSHIELD WIPER RELAY ASSEMBLY)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
A55-8 (+B) - Body ground
|
Ignition switch ON
|
11 to 14 V
|
Less than approximately 60 seconds after ignition switch turned off
|
11 to 14 V
|
Approximately 60 seconds or more after ignition switch turned off
|
Below 1 V
|
NG
|
|
|
17.
|
INSPECT NO. 1 INTEGRATION RELAY
|
(a) Remove the No. 1 integration relay.
Click here
(b) Inspect the No. 1 integration relay.
Click here
OK
|
|
|
18.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE - NO. 1 INTEGRATION RELAY)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
9A-4 - Body ground
|
Always
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
19.
|
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY - NO. 1 INTEGRATION RELAY)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A55-8 (+B) - 9A-3
|
Always
|
Below 1 Ω
|
A55-8 (+B) or 9A-3 - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
20.
|
INSPECT NO. 1 INTEGRATION RELAY
|
(a) Remove the No. 1 integration relay.
Click here
(b) Inspect the No. 1 integration relay.
Click here
OK
|
|
|
21.
|
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
|
(a) Disconnect the I85 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
|
9A-2 - I85-6 (WPS)
|
Always
|
Below 1 Ω
|
9A-2 or I85-6 (WPS) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
22.
|
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BODY GROUND)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
9A-1 - Body ground
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
23.
|
CHECK POWER DISTRIBUTION BOX ASSEMBLY
|
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Click here
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
8F-9 - MB-22 (CXP1)
|
Always
|
Below 1 Ω
|
8F-9 or MB-22 (CXP1) - Body ground
|
Always
|
10 kΩ or higher
|
|
|
*a
|
Component without harness connected
(Power Distribution Box Assembly)
|
|
|
|