Toyota Tacoma (2015-2018) Service Manual: Data List / Active Test

Toyota Tacoma (2015-2018) Service Manual / 2gr-fks Charging / Charging System / Data List / Active Test

DATA LIST / ACTIVE TEST

1. READ DATA LIST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTICE:

In the table below, the values listed under Normal Condition are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

(a) Warm up the engine.

(b) Turn the A/C switch off.

(d) Connect the Techstream to the DLC3.

(e) Turn the ignition switch to ON.

(f) Turn the Techstream on.

(g) Enter the following menus: Powertrain / Engine / Data List.

(h) According to the display on the Techstream, read the Data List.

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Battery Voltage	Battery voltage / Min.: 0.0 V, Max.: 65.5 V	11 to 14 V (Idling)	If the result is not as specified, abnormal battery voltage is suspected.
BATT Voltage	BATT voltage / Min.: 0.0 V, Max.: 79.998 V	11 to 14 V (Idling)	-
Alternator Output Duty Ratio	Generator output duty / Min.: 0.0%, Max.: 399.9%	Changes according to alternator output	If the result is not as specified, a malfunction of the charging system is suspected.
Alternator Voltage - Non Active Test	Requested voltage when regulator forced drive is not executed Min.: 0.0 V, Max.: 79.998 V	13.5 to 14.4 V: After engine start (varies with battery temperature or driving conditions)	Active Test support data
Voltage of Alternator	Voltage of Alternator / Min.: 0.0 V, Max.: 79.9 V	-	-

HINT:

Normal Condition: If no idling conditions are specified, the shift lever should be in N (Neutral) or P, and the A/C switch and all accessory switches should be off.

2. PERFORM ACTIVE TEST

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Engine / Active Test.

(e) According to the display on the Techstream, perform the Active Test.

Tester Display	Test Part	Control Range	Diagnostic Note
Control the Voltage of Alternator	Requested output voltage of generator regulator during forced activation	Between 12.5 and 14.8 V	Test is possible after engine start

Freeze Frame Data

FREEZE FRAME DATA 1. DESCRIPTION The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful ...

Fail-safe Chart

FAIL-SAFE CHART If any of the following DTCs are stored, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily. DTC Fail-safe Operation Fail- ...

Other materials:

Open in Stop Light Switch Circuit (C1425)
DESCRIPTION The skid control ECU (brake actuator assembly) detects the brake operating conditions through a signal transmitted by the stop light switch. The skid control ECU incorporates a circuit to detect an open circuit. This DTC is output when an open circuit is detected in the stop light ...

Inspection
INSPECTION PROCEDURE 1. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY (a) Using a vernier caliper, measure the brush length. Text in Illustration *a Length Standard exposed length: 9.5 to 11.5 mm (0.374 to 0.453 in.) Minimum ex ...

Vacuum Pump
Components COMPONENTS ILLUSTRATION Installation INSTALLATION PROCEDURE 1. INSTALL VACUUM PUMP ASSEMBLY (a) Apply engine oil to the 2 O-rings on the vacuum pump assembly. (b) Apply engine oil to the inner surface of the installation hole. (c) Install the vacuum pump assembly so that th ...