(a) Vehicle speed 20 km/h (12.4 mph) or more
(b) Engine speed 1000 rpm or more
(c) STA signal ON
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Engine/Hybrid System | Section: Engine Control | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000000TA008SX |
| Title: 2UZ-FE ENGINE CONTROL: SFI SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
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 No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0617 |
When conditions (a), (b) and (c) met, positive (+B) battery voltage 10.5 V or more applied to ECM for 20 seconds (1 trip detection logic) |
|
MONITOR STRATEGY
|
Related DTCs |
P0617: Starter signal |
|
Required Sensors/Components (Main) |
ST relay, PNP switch and Ignition 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 present |
None |
|
Battery voltage |
10.5 V or more |
|
Vehicle speed |
20 km/h (12.5 mph) or more |
|
Engine speed |
1000 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 ignition switch to ON.
(c) Turn the Techstream ON.
(d) Enter the following menus: Powertrain / Engine / Data List / All Data / Starter Signal.
(e) Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions.
OK:
|
Ignition Switch Position |
Starter Signal |
|---|---|
|
ON |
OFF |
|
START |
ON |
|
|
2. |
READ VALUE USING TECHSTREAM (STARTER SIGNAL) |
(a) Disconnect the Park/Neutral Position (PNP) switch connector.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream ON.
(e) Enter the following menus: Powertrain / Engine / Data List / All Data / Starter Signal.
(f) Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions.
OK:
|
Starter Signal |
Proceed to |
|---|---|
|
Remains ON |
A |
|
OFF |
B |
|
|
3. |
INSPECT ECM (STA TERMINAL VOLTAGE) |
(a) Disconnect the ECM connector.
(b) Disconnect the PNP switch connector.
(c) Turn the ignition switch to ON.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
Proceed to |
|---|---|---|---|
|
A27-46(STA) - Body ground |
Ignition switch ON |
Below 1.5 V |
A |
|
11 to 14 V |
B |
|
|
4. |
INSPECT PARK / NEUTRAL POSITION SWITCH ASSEMBLY |
(a) Disconnect the 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) |
Except P or N |
10 kΩ or higher |
|
2 (RB) - 5 (L) |
All positions |
10 kΩ or higher |
Result
|
Result |
Proceed to |
|---|---|
|
Short between 4 and 5 |
A |
|
Short between 2 and 5 |
B |
|
Within standard range |
C |
|
|
5. |
REPLACE PARK / NEUTRAL POSITION SWITCH ASSEMBLY |
(a) Replace the park/neutral position switch.
-
for 2WD
-
for 4WD
|
|
6. |
INSPECT IGNITION SWITCH ASSEMBLY |
(a) Disconnect the ignition switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
5 (AM2) - 7 (ST2) |
Ignition switch position START |
Below 1 Ω |
|
Except above |
10 kΩ or higher |
|
|
7. |
READ VALUE USING TECHSTREAM (STARTER SIGNAL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream ON.
(d) Enter the following menus: Powertrain / Engine / Data List / All Data / Starter Signal.
(e) Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions.
OK:
|
Ignition Switch Position |
Starter Signal |
|---|---|
|
ON |
OFF |
|
START |
ON |
Result
|
Result |
Proceed to |
|---|---|
|
Outside standard range |
A |
|
Within standard range |
B |
|
|
8. |
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - PNP SWITCH - ECM) |
|
|
9. |
CHECK WHETHER DTC OUTPUT RECURS |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream ON.
(d) Clear DTCs
.
(e) Drive the vehicle at more than 20 km/h (12.43 mph) for over 20 seconds.
(f) Enter the following menus: Powertrain / Engine / Trouble Codes.
(g) Read DTCs.
Result
|
Result |
Proceed to |
|---|---|
|
P0617 is output |
A |
|
No DTC is output |
B |
|
|
|