Pinpoint Test G426404P5

PINPOINT TEST G426404p5 : SERVO POWER SUPPLY CIRCUIT TESTS

G426404t12 : CHECK THE SERVO POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
1. Disconnect the battery negative terminal.
2. Disconnect the rear climate control module connector RA01.
3. Disconnect the mode servo connector RA09.
4. Measure the resistance between the rear climate control module connector RA01, pin 11 (U) and mode servo connector RA09, pin 03 (U).

- Is the resistance greater than 5 ohms?

-> YES
REPAIR the high resistance circuit between the rear climate control module connector RA01, pin 11 (U) and splice RAS10. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G426404t14.

G426404t14 : CHECK THE SERVO POWER SUPPLY CIRCUIT FOR SHORT TO GROUND
1. Disconnect the LH air mix servo connector RA07.
2. Disconnect the RH air mix servo connector RA08.
3. Measure the resistance between the rear climate control module connector RA01, pin 11 (U) and GROUND.

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short circuit between the rear climate control connector RA01, pin 11 (U), mode servo connector RA09, pin 03 (U), LH air mix servo connector RA07, pin 03 (U) and RH air mix servo connector RA08, pin 03 (U). CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G426404t15.

G426404t15 : CHECK THE SERVO POWER SUPPLY CIRCUIT FOR SHORT TO B+
1. Reconnect the battery negative terminal.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between the rear climate control module connector RA01, pin 11 (U) and GROUND.

- Is the voltage greater than 3 volts?

-> YES
REPAIR the short circuit between the rear climate control connector RA01, pin 11 (U), mode servo connector RA09, pin 03 (U), LH air mix servo connector RA07, pin 03 (U) and RH air mix servo connector RA08, pin 03 (U). CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G426404t16.

G426404t16 : CHECK THE MODE SERVO FOR SHORT TO B+
1. Reconnect the mode servo connector RA09.
2. Measure the voltage between the rear climate control module connector RA01, pin 11 (U) and GROUND.

- Is the voltage greater than 3 volts?

-> YES
INSTALL a new mode servo. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G426404t17.

G426404t17 : CHECK THE LH AIR MIX SERVO FOR SHORT TO B+
1. Reconnect the LH air mix servo connector RA07.
2. Measure the voltage between the rear climate control module connector RA01, pin 11 (U) and GROUND.

- Is the voltage greater than 3 volts?

-> YES
INSTALL a new LH air mix servo. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G426404t18.

G426404t18 : CHECK THE RH AIR MIX SERVO FOR SHORT TO B+
1. Reconnect the RH air mix servo connector RA08.
2. Measure the voltage between the rear climate control module connector RA01, pin 11 (U) and GROUND.

- Is the voltage greater than 3 volts?

-> YES
INSTALL a new RH air mix servo. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G426404t19.

G426404t19 : CHECK THE SERVO'S FOR SHORT TO GROUND
1. Disconnect the battery negative terminal.
2. Measure the resistance between the rear climate control module connector RA01, pin 11 (U) and GROUND.

- Is the resistance less than 10,000 ohms?

-> YES
GO to Pinpoint Test G426404t20.

-> NO
INSTALL a new rear climate control module. CLEAR the DTC. TEST the system for normal operation.

G426404t20 : CHECK THE MODE SERVO FOR SHORT TO GROUND
1. Disconnect the mode servo connector RA09.
2. Measure the resistance between the rear climate control module connector RA01, pin 11 (U) and GROUND.

- Is the resistance less than 10,000 ohms?

-> YES
GO to Pinpoint Test G426404t21.

-> NO
INSTALL a new mode servo. CLEAR the DTC. TEST the system for normal operation.

G426404t21 : CHECK THE LH AIR MIX SERVO FOR SHORT TO GROUND
1. Disconnect the LH air mix connector RA07.
2. Measure the resistance between the rear climate control module connector RA01, pin 11 (U) and GROUND.

- Is the resistance less than 10,000 ohms?

-> YES
INSTALL a new LH air mix servo. CLEAR the DTC. TEST the system for normal operation.

-> NO
INSTALL a new RH air mix servo. CLEAR the DTC. TEST the system for normal operation.