238

Possible Causes

• •Intermittent Problem
• •TIP signal circuit shorted to voltage
• •Faulty TIP sensor
• •Faulty ECM
• •Faulty ECM connector
• •Open sensor ground circuit

Suggested Actions

1. 1Perform the On-Board (OBD) System Check
2. 2Verify if DST displays TIP pressure greater than calibration limit with key ON, engine ON, system mode running, and engine idling
3. 3Disconnect TIP sensor from harness and check if DST displays TIP voltage < 0.100 VDC with key ON, engine OFF, and system mode stopped
4. 4Probe sensor ground circuit with a test light connected to battery voltage to check if test light comes on

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