Pinpoint Test D : DTC P188C And P188D
WARNING: This page is about a different variant/trim than selected.
- D1 CHECK FOR AWD RELAY VOLTAGE
- Ignition OFF.
- Disconnect: AWD Relay Module C4379 .
- Inspect the connectors for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
- Ignition ON.
- Measure the voltage
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C4379-1 CBB70 (YE/BU) - Ground
Is the voltage greater than 11 volts?
Yes GO to D4. No GO to D2. - D2 CHECK FUSE 70 (10A)
- Ignition OFF.
- Remove fuse 70 (10A).
- Check fuse 70 (10A).
Is the resistance less than 5 ohms?
Yes GO to D3. No REPAIR the circuit. - D3 CHECK THE AWD RELAY POWER CIRCUIT FOR AN OPEN
- Measure the resistance
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C4379-1 CBB70 (YE/BU) BJB CBB70 (YE/BU)
Is the resistance less than 5 ohms?
Yes GO to D5. No REPAIR the circuit. - Measure the resistance
between.
- D4 CHECK THE AWD RELAY GROUND CIRCUIT FOR AN OPEN
- If removed, install fuse 70 (10A)
- Ignition ON.
- Measure the voltage
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C4379-1 CBB70 (YE/BU) C4379-4 GD151 (BK/GN)
Is the voltage greater than 11 volts?
Yes GO to D5. No REPAIR the circuit. - D5 CHECK THE AWD RELAY MODULE COMMAND AND FEEDBACK CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect: PCM C175B .
- Measure the resistance
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C4379-3 VCF35 (GN) C175B-54 VCF35 (GN) C4379-6 VCF34 (WH) C175B-3 VCF34 (WH)
Is the resistance less than 5 ohms?
Yes GO to D6. No REPAIR the circuit. - D6 CHECK THE AWD RELAY MODULE COMMAND AND FEEDBACK CIRCUITS FOR A SHORT TO GROUND
- Measure the resistance
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C4379-3 VCF35 (GN) - Ground C4379-6 VCF34 (WH) - Ground
Is the resistance greater than 10, 000 ohms?
Yes GO to D7. No REPAIR the circuit. - Measure the resistance
between.
- D7 CHECK THE AWD RELAY MODULE COMMAND AND FEEDBACK CIRCUITS FOR A SHORT TOGETHER
- Measure the resistance
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C4379-3 VCF35 (GN) C4379-6 VCF34 (WH)
Is the resistance greater than 10, 000 ohms?
Yes GO to D8. No REPAIR the circuit. - Measure the resistance
between.
- D8 CHECK THE AWD RELAY MODULE COMMAND AND FEEDBACK CIRCUITS FOR A SHORT TO POWER
- Ignition ON.
- Measure the voltage
between.
Positive Lead Negative Lead Pin Circuit Pin Circuit C4379-3 VCF35 (GN) - Ground C4379-6 VCF34 (WH) - Ground
Is any voltage present?
Yes REPAIR the circuit. No REPLACE the AWD relay module. REFER to All Wheel Drive (AWD) Relay Module . RUN the self-test. If DTC P188C and/or P188D return, INSTALL a new PCM, REFER to Electronic Engine Controls . PROGRAM the PCM with the latest calibration. PERFORM the Solenoid Body Strategy Data Download procedure and PERFORM the Solenoid Body Strategy Drive Cycle, REFER to Automatic Transmission 6F50/6F55 . PROGRAM the PCM with the ATC solenoid bar code information, REFER to Automatic Torque Coupling (ATC) Configuration .