The windshield wiper relay assembly controls the windshield wiper motor assembly through this circuit.
for LHD:
for RHD:
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter following menus: Body Electrical / Main Body / Active Test.
Perform the Active Test according to the display on the GTS.
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Front Wiper Lo Operation | Function to operate the windshield wiper motor assembly in LO | OFF or ON | - |
| Front Wiper Hi Operation | Function to operate the windshield wiper motor assembly in HI | OFF or ON | - |
| Tester Display |
|---|
| Front Wiper Lo Operation |
| Tester Display |
|---|
| Front Wiper Hi Operation |
Windshield wiper motor assembly operates normally.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the windshield wiper motor assembly.
Inspect the windshield wiper motor assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N67 and N68 windshield wiper relay assembly connectors.
Disconnect the A18 windshield wiper motor assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N67-2 (+1) - A18-1 (+1) | Always | Below 1 Ω |
| N67-4 (+2) - A18-4 (+2) | Always | Below 1 Ω |
| N68-6 (+SM) - A18-3 (+S) | Always | Below 1 Ω |
| N67-2 (+1) or A18-1 (+1) - Body ground | Always | 10 kΩ or higher |
| N67-4 (+2) or A18-4 (+2) - Body ground | Always | 10 kΩ or higher |
| N68-6 (+SM) or A18-3 (+S) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N67-2 (+1) - A18-5 (+1) | Always | Below 1 Ω |
| N67-4 (+2) - A18-3 (+2) | Always | Below 1 Ω |
| N68-6 (+SM) - A18-1 (+S) | Always | Below 1 Ω |
| N67-2 (+1) or A18-5 (+1) - Body ground | Always | 10 kΩ or higher |
| N67-4 (+2) or A18-3 (+2) - Body ground | Always | 10 kΩ or higher |
| N68-6 (+SM) or A18-1 (+S) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LHD |
| *B | for RHD |
| *a | Front view of wire harness connector
(to Windshield Wiper Motor Assembly) |
Disconnect the windshield wiper motor assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A18-5 (E) - Body ground | Always | Below 1 Ω |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A18-4 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
Click hereVehicle Exterior>WIPER / WASHER>WIPER ECU>REMOVAL201902,999999,_59,_079320,_0385310,RM100000001GLLS,
NG