For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Important: In order to avoid misdiagnosis, set the J 39200 to zero before you take any measurements.
1 |

1. Turn the ignition switch to the OFF position.
2. Disconnect the ambient air temperature sensor connector.
3. Connect a fused (3 amp) jumper between terminal A and terminal B of the ambient air temperature sensor harness connector.

Does the display read SC?

--

Go to Step 2

Go to Step 3

2 | Replace the ambient air temperature sensor. Refer to Ambient Air Temperature Gage Sensor Replacement . Has the repair been made and the system rechecked? | -- | System OK | --
3 |

1. Disconnect the driver information display connector.
2. Using a J 39200 digital multimeter (DMM), probe between the driver information display harness connector terminal 10 and ground.
3. Connect a fused (3 amp) jumper between the ambient air temperature sensor harness connector terminal A and ground.
4. Measure CKT 735 for continuity to ground.

Does CKT 735 show continuity to ground?

--

Go to Step 5

Go to Step 4

4 | Repair poor connection or open in CKT 735 between the driver information display harness connector terminal 10 and the ambient air temperature sensor harness connector terminal A. Has the repair been made and the system rechecked? | -- | System OK | --
5 |

1. Using a J 39200 DMM, probe between the driver information display harness connector terminal 10 and terminal 8.
2. Reconnect the fused (3 amp) jumper between the ambient air temperature sensor harness connector terminal A and terminal B.
3. Measure for continuity between CKT 1550 and CKT 735.

Does the CKT 1550 show continuity to CKT 735?

--

Go to Step 7

Go to Step 6

6 | Repair poor connection or open in CKT 1550 between the ambient air temperature sensor harness connector terminal B and the driver information display harness connector terminal 8. Has the repair been made and the system rechecked? | -- | System OK | --
7 | Replace the driver information display. Refer to Driver Information Center Replacement . Has the repair been completed and the system rechecked? | -- | System OK | --