Toyota Tundra. Manual — part 1401

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS

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 to 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.

Required sensors/components (main)

ECM

Required sensors/components (sub)

-

Frequency of operation

Once per driving cycle

Duration

1 seconds

MIL operation

Immediate

Sequence of operation

None

DMA communication error

Not detected

When one of following conditions is met:

Condition 1 or 2

1. Difference of main TP and sub TP

0.3 V or higher

2. Difference of main brake switch signal and sub brake switch signal

Different

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

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

DTC DETECTION CONDITION AND TROUBLE AREA

MONITOR STRATEGY

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS

WIRING DIAGRAM

DTC

Code

DTC Detection Condition

Trouble Area

P0617

When conditions (a), (b) and (c) met, positive (+B) battery voltage
10.5 V or higher applied to ECM for 20 seconds (1 trip detection
logic)

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

b. Engine speed 1000 RPM or more

c. STA signal ON



Park/Neutral Position
(PNP) switch



Starter relay circuit



Ignition switch



ECM

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

Monitor runs whenever following DTCs not present

None

Battery voltage

10.5 V or higher

Vehicle speed

20 km/h (12.5 mph) or more

Engine speed

1000 RPM or more

Starter signal

ON

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 190: 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 to 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 (2UZ-FE) - Tundra

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

START positions.

OK

IGNITION SWITCH POSITION

NG : Go to step 2

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

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.

Standard resistance

STANDARD RESISTANCE SPECIFICATION

Result

RESULT REFERENCE

Ignition Switch Position STARTER SIG (Starter Signal)

ON

OFF

START

ON

Tester Connection

Condition

Specified Condition

4 (B) - 5 (L)

Shift lever position P

Below 1 ohms

4 (B) - 5 (L)

Shift lever position N

Below 1 ohms

Result Proceed To

NG

A

OK

B

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra