Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Radiator Shutter Schematics DEFINITION: The radiator shutters do not close when the engine coolant temperature is below 90.6°C (195°F). | ||||
1 | Did you review the radiator shutter system operation and perform the necessary inspections? | -- | Go to Step 2 | |
2 |
Are the radiator shutters closed? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 4 |
4 | Repair the ignition 1 voltage circuit on the coil side of the igniton 1 relay for an open, short to ground or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 20 | -- |
5 | Connect a test lamp between the ignition 1voltage circuit on the coil side of the ignition 1 relay to the ground circuit of the ignition 1 relay.. Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 6 |
6 | Repair the ground circuit of the ignition 1 relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 20 | -- |
7 | Probe the battery positive voltage circuit on the switch side of the ignition 1 relay with a test lamp that is connected to a good ground. Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 8 |
8 | Repair the battery positive voltage circuit of the ignition 1 relay for an open, short to ground or high resistance. Did you complete the repair? | -- | Go to Step 20 | -- |
9 | Connect a fused jumper wire between the battery positive voltage circuit and the ignition 1 voltage circuit on the switch side of the ignition 1 relay. Are the radiator shutters closed? | -- | Go to Step 14 | Go to Step 10 |
10 | Test the ignition 1 voltage circuit on the switch side of the ignition 1 relay for an open, short to ground, or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 11 |
11 |
Are the radiator shutters closed? | -- | Go to Step 15 | Go to Step 12 |
12 | Test the coolant temperature signal circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 13 |
13 | Test the ground circuit of the radiator shutter/engine coolant temperature (ECT) switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 16 |
14 | Inspect for loose or poor connections at the ignition 1 relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 17 |
15 | Inspect for loose or poor connections at the radiator shutter/engine coolant temperature (ECT) switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 18 |
16 | Inspect for loose or poor connections at the radiator shutter valve assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 19 |
17 | Replace the ignition 1 relay. Did you complete the repair? | -- | Go to Step 20 | -- |
18 | Replace the radiator shutter/engine coolant temperature (ECT) switch. Refer to Shutter Engine Coolant Temperature Sensor Replacement . Did you complete the repair? | -- | Go to Step 20 | -- |
19 | Replace the radiator shutte valve assembly. Refer to Shutter Valve Replacement . Did you complete the repair? | -- | Go to Step 20 | -- |
20 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
