Toyota Tundra. Manual — part 1225

INSPECTION PROCEDURE

1. CHECK DTC

a. Clear DTC (See DTC CHECK/CLEAR ).

b. Turn the ignition switch OFF.

c. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.

d. Connect the cable to the negative (-) battery terminal.

e. Turn the ignition switch ON.

f. Check DTC.

OK: P060E is not present.

NG : REPLACE ECM (See REMOVAL )

OK : CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT
PROBLEMS )

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 sets the DTC. This monitor runs when
the vehicle is driven at 12.4 mph (20 km/h) for over 20 seconds.

DTC TROUBLE DETECTION CONDITION CHART

MONITOR STRATEGY

MONITOR STRATEGY

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)

a. Vehicle speed 12.4 mph (20 km/h) or more

b. Engine speed 1000 RPM or more

c. STA signal ON



Park/Neutral Position
(PNP) switch



ST relay circuit



Ignition switch



ECM

Related DTCs

P0617: Starter signal

Required Sensors/Components (Main)

ST relay, PNP switch, Ignition switch

Required Sensors/Components (Related) Vehicle Speed Sensor (VSS), Crankshaft Position (CKP) sensor
Frequency of Operation

Continuous

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS

WIRING DIAGRAM

Duration

20 seconds

MIL Operation

Immediate

Sequence of Operation

None

Monitor runs whenever following DTCs not present

None

Battery voltage

10.5 V or more

Vehicle speed

12.4 mph (20 km/h) or more

Engine speed

1000 RPM or more

Starter signal

ON

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

Fig. 180: Starter Relay Circuit High - 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 (See 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.

1. READ VALUE USING TECHSTREAM (STARTER SIGNAL)

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch ON and turn the Techstream ON.

c. Enter the following menus: Powertrain/Engine and ECT/Data List/All Data/Starter Signal.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

d. Check the value displayed on the Techstream when the ignition switch is turned to the ON and

START positions.

Standard

DATA LIST

Result

RESULT CHART

B : CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT
PROBLEMS )

A : Go to next step.

2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

a. Disconnect the D35 PNP switch connector.

b. Measure the resistance according to the value(s) in the table below.

Fig. 181: Identifying D35 PNP Switch Connector Terminals

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Ignition Switch Position Starter Signal

ON

OFF

START

ON

Result Proceed To

NG

A

OK

B

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra