Pinpoint Test D : Pinpoint Test
WARNING: This page is about a different variant/trim than selected.
- WARNING: Always allow the engine to cool before opening the cooling system. Do not unscrew the coolant pressure relief cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may result in serious personal injury.
- D1 CHECK THE COOLANT BYPASS SOLENOID VALVE CONNECTOR FOR BEING FULLY SEATED
- Check the coolant bypass solenoid valve C1918 for being fully seated.
Were any concerns found?
Yes REPAIR as needed. No GO to D2 - D2 CHECK THE COOLANT BYPASS SOLENOID VALVE RESISTANCE
- Disconnect coolant bypass solenoid valve C1918 .
- Measure:
Positive Lead Measurement / Action Negative Lead pin 1 (component side) pin 2 (component side)
Is the resistance between 9-12 ohms?
Yes GO to D3 No INSTALL a new coolant bypass solenoid valve. Refer to: Coolant Bypass Solenoid Valve . - D3 CHECK FOR VOLTAGE TO THE COOLANT BYPASS SOLENOID VALVE
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C1918-2 Ground
Is voltage greater than 11 volts?
Yes GO to D4 No VERIFY the BJB fuse 24 (10A) is OK. If the fuse is OK, REPAIR the circuit. If not OK, REFER to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short. - D4 CHECK THE COOLANT BYPASS SOLENOID VALVE CIRCUIT FOR A SHORT TO POWER
- Ignition OFF.
- Disconnect PCM C1915E .
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C1918-1 Ground
Is any voltage present?
Yes REPAIR the circuit. No GO to D5 - D5 CHECK THE COOLANT BYPASS SOLENOID VALVE CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Measure:
Positive Lead Measurement / Action Negative Lead C1918-1 Ground
Is the greater than 10, 000 ohms?
Yes GO to D6 No REPAIR the circuit. - D6 CHECK THE COOLANT BYPASS SOLENOID VALVE CIRCUIT FOR AN OPEN
Is the resistance less than 3 ohms?
Yes INSTALL a new coolant bypass solenoid valve. Refer to: Coolant Bypass Solenoid Valve . CLEAR the DTC. TEST the system for normal operation. If the DTC is still present GO to D7 No GO to D7 - D7 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION
- Ignition OFF.
- Disconnect and inspect all the PCM connectors.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect the PCM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PCM. Refer to: Powertrain Control Module (PCM) . No The system is operating correctly at this time. The concern may have been caused by module connections. Address the root cause of any connector or pin issues.