Toyota Tundra. Manual — part 1164

5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - EFI NO. 2 FUSE)

a. Disconnect the D8 MAF meter connector.

b. Remove the EFI NO. 2 fuse from the engine room relay block.

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

Standard resistance (Check for open)

TESTER CONNECTION SPECIFIED CONDITION

Standard resistance (Check for short)

TESTER CONNECTION SPECIFIED CONDITION

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR

Tester Connection

Condition Specified Condition

D8-1 (+B) - EFI No. 2 fuse (2) Always

Below 1 ohms

Tester Connection

Condition Specified Condition

D8-1 (+B) or EFI No. 2 fuse (2) - Body ground Always

10 kohms or higher

2008 Toyota Tundra

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

Fig. 58: Identifying D8 MAF Meter Connector Terminals

OK : CHECK ECM POWER SOURCE CIRCUIT (See ECM POWER SOURCE CIRCUIT )

6. CHECK HARNESS AND CONNECTOR (SENSOR GROUND)

a. Disconnect the D8 MAF meter connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

NG : Go to step 7

Tester Connection

Condition Specified Condition

D8-2 (E2G) - Body ground Always

Below 1 ohms

2008 Toyota Tundra

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

Fig. 59: Identifying D8 MAF Meter Connector Terminal (E2G)

OK : REPLACE MASS AIR FLOW METER (See REMOVAL )

7. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)

a. Disconnect the D8 MAF meter connector.

b. Disconnect the D74 ECM connector.

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

Standard resistance (Check for open)

TESTER CONNECTION SPECIFIED CONDITION

Standard resistance (Check for short)

TESTER CONNECTION SPECIFIED CONDITION

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR

Tester Connection

Condition Specified Condition

D8-3 (VG) - D74-74 (VG)

Always

Below 1 ohms

D8-2 (E2G) - D74-75 (E2G) Always

Below 1 ohms

Tester Connection

Condition Specified Condition

D8-3 (VG) or D74-74 (VG) - Body ground

Always

10 kohms or higher

D8-2 (E2G) or D74-75 (E2G) - Body ground Always

10 kohms or higher

2008 Toyota Tundra

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

Fig. 60: Identifying D74 ECM Connector Terminals

OK : REPLACE ECM (See REMOVAL )

DTC P0110 INTAKE AIR TEMPERATURE CIRCUIT MALFUNCTION; DTC P0112 INTAKE AIR
TEMPERATURE CIRCUIT LOW INPUT; DTC P0113 INTAKE AIR TEMPERATURE CIRCUIT
HIGH INPUT

DESCRIPTION

2008 Toyota Tundra

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