Sundance L4-153 2.5L SOHC Turbo (1990)
is present at the Z1 wire, proceed to step 3.
3.
Connect the voltmeter to the K19 (terminal 85) wire at the ASD connector. Turn the ignition key to the RUN position. Input voltage from the
SBEC to the ASD relay should be present. If voltage is present proceed to step 4. If no voltage is present, disconnect the 60-Way SBEC connector,
and the ASD relay connector. Connect an ohmmeter between the K19/DK19 (terminal 85) wire and the DB/YL wire at pin connector no. 51 of the
SBEC connector, and check for continuity. If continuity exists, the problem is computer related. See: Computers and Control Systems/Testing and
Inspection
If no continuity exists, repair open in wire, reconnect SBEC and ASD relay, and test operation.
4.
Connect voltmeter to J2 (terminal 86) wire at ASD connector. Turn ignition key to START position, and crank engine, while observing voltage at
J2. Voltage should be present at J2 and drop to less than 1 volt within 2 seconds during cranking. If voltage drops ASD relay is functioning, and
no further testing of the ASD relay is necessary. If voltage does not drop, proceed to step 5. If no voltage is present, disconnect the ASD relay, and
connect an ohmmeter between the J2 (terminal 86) and K19 (terminal 85) of the ASD relay and check for continuity. If no continuity exists replace
and ASD relay and test operation.
5.
Disconnect the 60-Way SBEC connector and ASD relay. Connect an ohmmeter between the J2 wire at the ASD relay connector and the DB wire
at pin connector no. 9 of the SBEC. Check for continuity. If no continuity exists repair open in wire, reconnect SBEC and ASD relay, and test
operation. If continuity exists, the problem is computer related. See: Computers and Control Systems/Testing and Inspection
