A73688
PTNK (+) E2 (-)E5
ECM
(1)
Vacuum E7
ECM
No Vacuum(2)
Vapor Pressure Sendor
A87823
Wire Harness Side
GND PTNK VCC
V11
Vapor Pressure Sensor
E5
ECME7
ECM
E2 VC
PTNK
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
05-577
767 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT ECM (PTNK VOLTAGE)
(a) Turn the ignition switch ON.
(b) Check the voltage of the ECM connectors.
(1) Disconnect the vacuum hose from the vapor pres-
sure sensor.
Standard (1):
Tester ConnectionSpecified Condition
E5-21 (PTNK) - E7-28 (E2)2.9 to 3.7 V
(2) Using a MITYVAC (hand-held vacuum pump), ap-
ply a vacuum of 4.0 kPa (30 mmHg, 1.18 in.Hg) to
the vapor pressure sensor.
NOTICE:
The vacuum applied to the vapor pressure sensor must be
less than 66.7 kPa (500 mmHg, 19.7 in.Hg).
Standard (2):
Tester ConnectionSpecified Condition
E5-21 (PTNK) - E7-28 (E2)0.5 V or less
OK REPLACE ECM (See page 10-24)
NG
3 CHECK WIRE HARNESS (VAPOR PRESSURE SENSOR - ECM)
(a) Disconnect the V11 vapor pressure sensor connector.
(b) Disconnect the E5 and E7 ECM connectors.
(c) Check the resistance of the wire harness side connectors.
Standard:
Tester ConnectionSpecified Condition
V11-2 (PTNK) - E5-21 (PTNK)
V11-1 (GND) - E7-28 (E2)
V11-3 (VCC) - E7-18 (VC)
Below 1 W
V11-2 (PTNK) or E5-21 (PTNK) - Body ground
V11-3 (VCC) or E7-18 (VC) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE VAPOR PRESSURE SENSOR ASSY
