Quantum L5-2226cc 2.22L SOHC (1985)
Oxygen Sensor: All Technical Service Bulletins
Oxygen Sensor System - Checking Procedure
Applies To
QUANTUM
5 Cyl CIS
1984
Group
26
Subject
OXS System
Part Identifier N/A
Key Points
Checking procedure
Supercedes Product Circular, Group 26, 84-01
A-63
Number
85-02
June 28, 1985
The OXS system on this vehicle uses a pressure gradient switch.. This switch signals the OXS control unit to operate the frequency valve at an ON/OFF
ratio of 80% during warm up.
A coolant temperature actuated vacuum switch controls the pressure gradient signal to the OXS control unit.
The switch is off after the vehicle is warmed up.
Pressure gradient switch, checking (installed in vehicle) Work sequence
CAUTION
Test should only be made with Siemens 451 or VAG 1367 testers
FIGURE 1
-
connect " + " lead to battery positive terminal
-
connect " - " lead to battery negative terminal
-
connect dwell lead to OXS test connection (blue/white wire) using adapter US 1112
