Table 179
Troubleshooting Test Steps
Values Results
1. Inspect Electrical Connectors and Wiring
A. Remove the electrical power from the ECM.
B. Thoroughly inspect the ECM connector J1/P1. Inspect all of
the other connectors for the circuit. Refer to the diagnostic func-
tional test Troubleshooting, “Electrical Connectors - Inspect”.
C. Perform a 45 N (10 lb) pull test on each of the wires in the
ECM connector that are associated with the circuit.
D. Check the ECM connector (allen head screw) for the correct
torque of 6 N·m (53 lb in).
E. Check the harness and the wiring for abrasion and for pinch
points.
Loose con-
nection or
damaged
wire
Result: The harness and wiring are OK.
Proceed to Test Step 2.
Result: There is a fault in a connector or the wiring.
Repair: Repair any faulty connectors or replace the wiring har-
ness. Ensure that all of the seals are properly in place and en-
sure that the connectors are correctly coupled.
Proceed to Test Step 4.
2. Check the Wiring Between the ECM and the Ether Control
The ether canister must be removed prior to performing this
procedure.
A. Verify that the keyswitch is in the OFF position.
B. Remove the ether canister.
C. Disconnect the engine harness connector for the ether
control.
D. Connect a digital voltmeter across the two terminals on the en-
gine harness connector for ether control.
E. Turn the keyswitch to the ON position.
F. Measure the voltage across the terminals while the keyswitch
is turned ON.
10 VDC Result: The voltage measured 0 VDC.
Repair: There is a problem in an electrical component be-
tween the ECM and the harness connector for the ether con-
trol. The problem may be inside an electrical connector. Make
the necessary repairs.
Proceed to Test Step 3.
Result: The voltage measured greater than 10 VDC.
The electrical components between the ECM and the harness
connector for the ether control are OK.
Proceed to Test Step 3.
3. Measure the Resistance of the Coil Inside the Ether
Control
A. Verify that the ether control is not connected to the engine
harness.
B. Measure the resistance of the coil inside the ether control.
20 Ω Result: The measured resistance was approximately 20 Ω.
Proceed to Test Step 4.
Result: The measured resistance was not approximately 20
Ω.
Repair: Replace the ether control.
Proceed to Test Step 4.
322 UENR4469-36
Circuit Tests
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