Toyota Yaris: Manual Transaxle System / Pattern Select Switch iMT Mode Circuit
DESCRIPTION
Operating the iMT switch illuminates the iMT indicator light in the combination meter assembly. This displays the iMT system standby condition.
WIRING DIAGRAM
PROCEDURE
| 1. | CHECK DTC OUTPUT (SFI SYSTEM) |
(a) Check for SFI system DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| B |
 | CHECK FOR INTERMITTENT PROBLEMS |
|
| 2. | INSPECT iMT SWITCH (COMBINATION SWITCH ASSEMBLY) |
| (a) Disconnect the H18 iMT Switch (combination switch assembly) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 8 (MSW1) - 5 (E) | Switch pushed | Below 1 Ω |
| 8 (MSW1) - 5 (E) | Switch not pushed | 10 kΩ or higher |
(c) Connect the H18 iMT Switch (combination switch assembly) connector.
| NG |
 | REPLACE iMT SWITCH (COMBINATION SWITCH ASSEMBLY) |
|
| 3. | CHECK HARNESS AND CONNECTOR (iMT SWITCH (COMBINATION SWITCH ASSEMBLY) - BODY GROUND) |
(a) Disconnect the H18 iMT switch (combination switch assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| H18-5 (E) - Body ground | Always | Below 1 Ω |
(c) Connect the H18 iMT switch (combination switch assembly) connector.
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 4. | CHECK HARNESS AND CONNECTOR (iMT SWITCH (COMBINATION SWITCH ASSEMBLY) - ECM) |
(a) Disconnect the H18 iMT switch (combination switch assembly) connector.
(b) Disconnect the A106 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| H18-8 (MSW1) -A106-4 (MTMS) | Always | Below 1 Ω |
| H18-8 (MSW1) or A106-4 (MTMS) - Body ground | Always | 10 kΩ or higher |
(d) Connect the A106 ECM connector.
(e) Connect the H18 iMT switch (combination switch assembly) connector.
| OK |
 | REPLACE ECM |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Refueling
Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.
To open the fuel-filler lid, pull the remote fuel-filler lid release.
