Toyota 2GR-FE Manual page 551

3
CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM)
Wire Harness Side:
Air Fuel Ratio Sensor Connector
C15
Bank 1
C35
Bank 2
C55 ECM Connector
A1A-
A2A+
A1A+
A2A-
OK
4
PERFORM CONFIRMATION DRIVING PATTERN
NEXT
5
CHECK WHETHER DTC OUTPUT RECURS (DTC P2A00 AND/OR P2A03)
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(a) Disconnect the C15 and C35 A/F sensor connectors.
(b) Turn the ignition switch on (IG).
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage
(d) Turn the ignition switch off.
(e) Disconnect the C55 ECM connector.
(f) Measure the resistance according to the value(s) in the
table below.
HA1A
Standard resistance (Check for open)
HA2A
A127715E14
Standard resistance (Check for short)
HA1A (C15-1) or HA1A (C55-86) - Body ground
A1A+ (C15-3) or A1A+ (C55-93) - Body ground
A1A- (C15-4) or A1A- (C55-116) - Body ground
HA1A (C35-1) or HA2A (C55-109) - Body ground
A2A+ (C35-3) or A2A+ (C55-120) - Body ground
A2A- (C35-4) or A2A- (C55-119) - Body ground
(g) Reconnect the ECM connector.
(h) Reconnect the A/F sensor connector.
NG
(a) Read the DTCs using the intelligent tester.
(b) Enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DTC INFO / CURRENT CODES.
Tester Connection
+B (C15-2) - Body ground
+B (C35-2) - Body ground
Tester Connection
HA1A (C15-1) - HA1A (C55-86)
A1A+ (C15-3) - A1A+ (C55-93)
A1A- (C15-4) - A1A- (C55-116)
HA2A (C35-1) - HA2A (C55-109)
A2A+ (C35-3) - A2A+ (C55-120)
A2A- (C35-4) - A2A- (C55-119)
Tester Connection
REPAIR OR REPLACE HARNESS OR
CONNECTOR
ES–395
Specified Condition
9 to 14 V
9 to 14 V
ES
Specified Condition
Below 1 Ω
Below 1 Ω
Below 1 Ω
Below 1 Ω
Below 1 Ω
Below 1 Ω
Specified Condition
10 kΩ or higher
10 kΩ or higher
10 kΩ or higher
10 kΩ or higher
10 kΩ or higher
10 kΩ or higher