Lexus NX: Starter Relay Circuit High (P0617-142)
DESCRIPTION
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0617-142 | Starter Relay Circuit High | An ST signal from the hybrid vehicle control ECU is on when the power switch is off. (2 trip detection logic) |
| Does not come on | Master Warning Light: Comes on |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
- Turn the power switch off and wait for 5 seconds or more.
PROCEDURE
| 1. | CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) |
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| NG | .gif) | CONNECT SECURELY |
|
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| 2. | CHECK CONNECTOR CONNECTION CONDITION (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY]) |
(a) Check the connector connection condition of the certification ECU (smart key ECU assembly).
HINT:
Refer to the Service Bulletin for the installation position.
OK:
The connector is connected securely and there are no contact problems.
| NG | | CONNECT SECURELY |
|
| 3. | CHECK HARNESS AND CONNECTOR (ST2 TERMINAL VOLTAGE) |
| (a) Turn the power switch off. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I115-9 (ST2) - Body ground | Power switch off | Below 1 V |
| OK | | REPLACE HYBRID VEHICLE CONTROL ECU |
|
| 4. | CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY]) |
| (a) Disconnect the I51 certification ECU (smart key ECU assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I115-9 (ST2) - Body ground | Power switch off | Below 1 V |
(c) Reconnect the I51 certification ECU (smart key ECU assembly) connector.
| OK | | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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