(a) The vehicle speed is 20 km/h (12.4 mph) or more.
(b) The engine speed is 1,000 rpm or more.
(c) The STA signal is ON.
| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Engine/Hybrid System | Section: Engine Control | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000TA008LX |
| Title: 3UR-FE ENGINE CONTROL: SFI SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
P0617 |
Starter Relay Circuit High |
DESCRIPTION
While the engine is being cranked, the positive battery voltage is applied to terminal STA of the ECM. If the ECM detects the Starter Control (STA) signal while the vehicle is being driven, it determines that there is a malfunction in the STA circuit. The ECM then illuminates the MIL and stores the DTC.
This monitor runs when the vehicle is driven at 20 km/h (12.4 mph) for over 20 seconds.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0617 |
When conditions (a), (b) and (c) are met, and a positive (+B) battery voltage of 10.5 V or higher is applied to the ECM for 20 seconds (1 trip detection logic). |
|
MONITOR STRATEGY
|
Related DTCs |
P0617: Starter signal |
|
Required Sensors/Components (Main) |
ST relay, PNP switch and engine switch |
|
Required Sensors/Components (Related) |
Vehicle Speed Sensor (VSS), Crankshaft Position (CKP) sensor |
|
Frequency of Operation |
Continuous |
|
Duration |
20 seconds |
|
MIL Operation |
Immediate |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
|
Monitor runs whenever following DTCs not stored |
None |
|
Battery voltage |
10.5 V or higher |
|
Vehicle speed |
20 km/h (12.5 mph) or more |
|
Engine speed |
1,000 rpm or more |
TYPICAL MALFUNCTION THRESHOLDS
|
Starter signal |
ON |
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
-
The following troubleshooting flowchart is based on the premise that the engine is cranked normally.
If the engine will not crank, proceed to the Problem Symptoms Table
. - Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (STARTER SIGNAL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG) and turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Starter Signal.
(d) Check the value displayed on the Techstream when the engine switch is turned to the START positions.
OK:
|
Engine Switch Position |
Starter Signal |
|---|---|
|
On (IG) |
OFF |
|
START |
ON |
|
|
2. |
INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY |
(a) Disconnect the C19 PNP switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4 (B) - 5 (L) |
Shift lever in P |
Below 1 Ω |
|
Shift lever in N |
Below 1 Ω |
|
|
Shift lever not in P and N |
10 kΩ or higher |
|
|
3. |
CHECK HARNESS AND CONNECTOR (PNP SWITCH - ECM) |
(a) Disconnect the C19 PNP switch connector.
(b) Disconnect the A38 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C19-5 - A38-46 (STA) |
Always |
Below 1 Ω |
|
C19-5 or A38-46 (STA) - Body ground |
Always |
10 kΩ or higher |
|
|
|