TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the MTV Solenoid harness connector.
Remove the MTV Relay from the IPM.
Measure the resistance of the MTV Relay Output circuit between the IPM and the
MTV Solenoid harness connector.
Is the resistance below 5.0 ohms?
All
Yes → Go To 4
No → Repair the MTV Relay Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
4 Turn the ignition off.
Disconnect the MTV Relay from the IPM.
Using a 12-volt test lightconnected to ground, probe the Fused B+ circuit in the IPM.
Does the test light illuminate brightly?
All
Yes → Go To 5
No → Repair the Fused B+ circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
5 Turn the ignition off.
Disconnect the MTV Relay from the IPM.
Using a 12-volt test light connected to battery voltage, probe the MTV Relay Ground
circuit in the IPM.
Does the test light illuminate brightly?
All
Yes → Go To 6
No → Repair the MTV Relay Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
6 Turn the ignition off.
Disconnect the MTV Relay from the IPM.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the MTV Relay Control circuit
in the IPM.
With the DRBIIIt, actuate the MTV Relay.
Does the 12-volt test light flash on and off?
All
No → Go To 7
Yes → Replace the MTV Relay.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
7 Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the MTV Relay from the IPM.
Measure the resistance of the MTV Relay Control circuit to ground.
Is the resistance below 5.0 ohms?
All
Yes → Repair the MTV Relay Control circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 8
247
DRIVEABILITY - NGC
P0660-MANIFOLD TUNE VALVE SOLENOID CIRCUIT — Continued
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