Fixed and Moveable Window System: Diagnosis Chevrolet Sonic I

Diagnostic Code Index

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(ref-542476-S03610919532013041600000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-542476-S11988299792013041600000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-542476-S27446858652013041600000) provides an overview of each diagnostic category.

Diagnostic Fault Information

Conditions for Running the DTC

Battery voltage must be between 9-16 V.

Conditions for Setting the DTC

B0283 02

The HVAC control module detects a short to ground in the relay coil control circuit.

B0283 05

The HVAC control module detects a short to voltage or an open/high resistance in the relay coil control circuit.

Action Taken When the DTC Sets

The rear window defogger will malfunction.

Conditions for Clearing the DTC

1. The DTC will be current for as long as the fault is present.
2. When the fault is no longer present, the DTC will be a history DTC.
3. A history DTC will clear after 50 ignition cycles.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the KR5 Rear Defogger Relay. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 85 and ground. If 10 ohms or greater Ignition OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
3. Connect a test lamp between the control circuit terminal 86 and the ground circuit terminal 85, Engine Running.
4. Verify the test lamp turns ON and OFF when pressing the rear window defogger switch. If the test lamp is always OFF Ignition OFF, disconnect the harness connector at the K33 HVAC control module. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K33 HVAC control module. If the test lamp is always ON Ignition OFF, disconnect the harness connector at the K33 HVAC control module, Engine Running. Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the K33 HVAC control module. If the test lamp turns ON and OFF
5. Test or replace the KR5 Rear Defogger Relay.

Component Testing

Relay Test

1. Ignition OFF, disconnect the KR5 Rear Defogger Relay.
2. Test for 60-180 ohms between terminals 85 and 86. If less than 60 ohms or greater than 180 ohms Replace the KR5 Rear Defogger Relay. If between 60-180 ohms
3. Test for infinite resistance between the terminals listed below: 30 and 86 30 and 87 30 and 85 85 and 87 If less than infinite resistance Replace the KR5 Rear Defogger Relay. If infinite resistance
4. Install a 3 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground.
5. Test for less than 2 ohms between terminals 30 and 87. If 2 ohms or greater Replace the KR5 Rear Defogger Relay. If less than 2 ohms
6. All OK

1. Perform the «Diagnostic System Check - Vehicle»(ref-542476-S03610919532013041600000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-542476-S11988299792013041600000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-542476-S27446858652013041600000) provides an overview of each diagnostic category.

Battery voltage must be between 9-16 V.

The driver window motor has detected the driver left front window switch is active for greater than 60 seconds.

The driver power window will malfunction.

1. The DTC will be current for as long as the fault is present.
2. The DTC will change from current to history when the fault is no longer present.
3. A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S79D Window Switch-Driver. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 11 and ground. If 10 ohms or greater Ignition OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
3. Ignition ON.
4. Verify the scan tool Driver Window Main Control Down Switch parameter is Inactive. If not Inactive Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver. Test for infinite resistance between the S79D Window Switch-Driver signal circuit terminal 8 and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the M74D Window Motor-Driver. If Inactive
5. Install a 3 A fused jumper wire between the signal circuit terminal 8 and the ground circuit terminal 11.
6. Verify the scan tool Driver Window Main Control Down Switch parameter is Active If not Active Ignition OFF, remove the 3 A fused jumper wire, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON. Test for less than 1 V between the S79D Window Switch-Driver signal circuit terminal 8 and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V Test for less than 2 ohms in the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the M74D Window Motor-Driver. If Active
7. Verify the scan tool Driver Window Main Control Up Switch parameter is Inactive. If not Inactive Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver. Test for infinite resistance between the S79D Window Switch-Driver signal circuit terminal 9 and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the M74D Window Motor-Driver. If Inactive
8. Install a 3 A fused jumper wire between the signal circuit terminal 9 and the ground circuit terminal 11.
9. Verify the scan tool Driver Window Main Control Up Switch parameter is Active If not Active Ignition OFF, remove the 3 A fused jumper wire, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON. Test for less than 1 V between the S79D Window Switch-Driver signal circuit 9 and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V Test for less than 2 ohms in the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the M74D Window Motor-Driver. If Active
10. Verify the scan tool Driver Window Main Control Express Switch parameter is Inactive. If not Inactive Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver. Test for infinite resistance between the S79D Window Switch-Driver signal circuit terminal 10 and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the M74D Window Motor-Driver. If Inactive
11. Install a 3 A fused jumper wire between the signal circuit terminal 10 and the ground circuit terminal 11.
12. Verify the scan tool Driver Window Main Control Express Switch parameter is Active If not Active Ignition OFF, remove the 3 A fused jumper wire, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON. Test for less than 1 V between the S79D Window Switch-Driver signal circuit 10 and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V Test for less than 2 ohms in the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the M74D Window Motor-Driver. If Active
13. Test or replace the S79D Window Switch-Driver.

Driver Window Switch

1. Ignition OFF, disconnect the harness connector at the S79D Window Switch-Driver.
2. Test for infinite resistance between the terminals listed below with the switch in the open position: Ground terminal 11 and control terminal 7 Ground terminal 11 and control terminal 8 Ground terminal 11 and control terminal 9 Ground terminal 11 and control terminal 10 If less than infinite resistance Replace the S79D Window Switch-Driver. If infinite resistance
3. Test for less than 3 ohms between the ground terminal 11 and the control terminal 9 with the switch in the Up position. If 3 ohms or greater Replace the S79D Window Switch-Driver. If less than 3 ohms
4. Test for less than 3 ohms between the ground terminal 11 and the control terminal 8 with the switch in the Down position. If 3 ohms or greater Replace the S79D Window Switch-Driver. If less than 3 ohms
5. All OK

1. Perform the «Diagnostic System Check - Vehicle»(ref-542476-S03610919532013041600000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-542476-S11988299792013041600000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-542476-S27446858652013041600000) provides an overview of each diagnostic category.

DTC Descriptors

For symptom byte information refer to: Symptom Byte List

1. The ignition switch is in the ON position.
2. Battery voltage must be between 9-16 V.

B3205 00

The BCM has detected that the compatibility code stored in the driver window motor does not match the compatibility code stored in the BCM.

B3205 39

An internal malfunction has been detected by the BCM in the driver window motor while commanding the window UP or DOWN.

B3205 42

The BCM will automatically attempt to download the calibration program into the driver window motor (As will occur when the window motor has been replaced), if the first calibration program fails to load, the BCM will attempt to download the calibration program a second time. If this download fails, the BCM will set appropriate DTC.

B3205 4B

The BCM has detected that the driver window is not "normalized" and can set for the following reasons

1. When the battery has been disconnected
2. When the battery has been replaced
3. When the door wiring harness has been disconnected
4. When the window motor has been disconnected.

The driver power window will malfunction.

B3205 00

Installing a compatible window motor for that specific make and model vehicle.

B3205 39

The driver window motor must be replaced before the DTC can be cleared.

B3205 42

The driver window motor must be replaced before the DTC can be cleared.

B3205 4B

The driver window motor must be normalized before the DTC can be cleared.

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the rear window defogger. Refer to «Checking Aftermarket Accessories»(ref-542498-S16706522532013041600000) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Rear Window Defogger Malfunction»(ref-542512-S21131910752013041600000)
2. «Power Windows Malfunction»(ref-542512-S20214443922013041600000)

1. Perform the «Diagnostic System Check - Vehicle»(ref-542476-S03610919532013041600000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-542476-S11988299792013041600000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-542476-S27446858652013041600000) provides an overview of each diagnostic category.

1. Ignition OFF and all vehicle systems OFF, disconnect the KR5 Rear Defogger Relay. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 85 and ground. If 10 ohms or greater Ignition OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
3. Engine Running
4. Verify a test lamp illuminates between the B+ circuit terminal 30 and ground. If the test lamp does not illuminate Replace the X50A Fuse Block-Underhood If the test lamp illuminates
5. Connect a test lamp between the control circuit terminal 86 and the ground circuit terminal 85.
6. Verify the test lamp turns ON and OFF pressing the rear window defogger switch. If the test lamp is always OFF Ignition OFF, remove the test lamp, disconnect the harness connector at the K33 HVAC Control Module. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K33 HVAC Control Module. If the test lamp is always ON Ignition OFF, remove the test lamp, disconnect the harness connector at the K33 HVAC Control Module, Ignition ON. Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the K33 HVAC Control Module. If the test lamp turns ON and OFF
7. Verify that a test lamp does not illuminate between the control circuit terminal 87 and ground. If the test lamp illuminates Repair the short to voltage on the control circuit If the test lamp does not illuminate
8. Ignition OFF and all vehicle systems OFF, disconnect the X2 harness connector at the E18 Rear Defogger Grid. It may take up to 2 minutes for all vehicle systems to power down.
9. Test for less than 10 ohms between the ground circuit terminal 1 and ground. If 10 ohms or greater Ignition OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
10. Connect the X2 harness connector at the E18 Rear Defogger Grid.
11. Ignition ON, connect a 30 A fused jumper wire between the B+ circuit terminal 30 and the control circuit terminal 87.
12. Verify the E18 Rear Defogger Grid is activated. If the E18 Rear Defogger Grid does not activate Ignition OFF, remove the jumper wire, disconnect the X1 harness connector at the E18 Rear Defogger Grid. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the E18 Rear Defogger Grid. If the E18 Rear Defogger Grid activates
13. Test or replace the KR5 Rear Defogger Relay.

Relay Test

1. Ignition OFF, disconnect the KR5 Rear Defogger Relay.
2. Test for 60-180 ohms between terminals 85 and 86. If less than 60 ohms or greater than 180 ohms Replace the KR5 Rear Defogger Relay. If between 60-180 ohms
3. Test for infinite resistance between the terminals listed below: 30 and 86 30 and 87 30 and 85 85 and 87 If less than infinite resistance Replace the KR5 Rear Defogger Relay. If infinite resistance
4. Install a 3 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground.
5. Test for less than 2 ohms between terminals 30 and 87. If 2 ohms or greater Replace the KR5 Rear Defogger Relay. If less than 2 ohms
6. All OK

Rear Defogger Grid Test

1. Engine running, command the Rear Defogger ON with a scan tool.
2. Verify that a test lamp illuminates between each rear window defogger grid line and ground. The test lamp should be off when testing at the ground side of the grid and get brighter as the test lamp moves closer to the voltage supply side of the grid. The test lamp should be dim when testing each grid line in the middle If the test lamp remains bright at the middle of the grid line. The grid line is open between the test point and the ground side of the grid. Replace the rear window If the test lamp remains off at the middle of the grid line. The grid line is open between the test point and the voltage supply side of the grid. Replace the rear window If the test lamp remains dim at the middle of each grid line.
3. All OK

1. Perform the «Diagnostic System Check - Vehicle»(ref-542476-S03610919532013041600000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-542476-S11988299792013041600000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-542476-S27446858652013041600000) provides an overview of each diagnostic category.

Diagnostic Aids

A window motor that has not been normalized will no longer perform the express up and express down functions, this may occur during the following conditions

1. When a window motor has been disconnected
2. When a door harness has been disconnected
3. When the battery has been disconnected or replaced

To normalize the window motor refer to Window Motor Programming - Express Function .

Driver Window Motor Malfunction

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the M74D Window Motor-Driver. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 1 and ground. If 10 ohms or greater Ignition OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
3. Ignition ON.
4. Verify a test lamp illuminates between the B+ circuit terminal 2 and ground. If the test lamp does not illuminate and the circuit fuse is good Ignition OFF. Test for less than 2 ohms in the B+ circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse. If the test lamp does not illuminate and the circuit fuse is open Ignition OFF. Test for infinite resistance between the B+ circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the M74D Window Motor-Driver. If the test lamp illuminates
5. Replace the M74D Window Motor-Driver.

Driver Window Switch Malfunction

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S79D Window Switch-Driver. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 11 and ground. If 10 ohms or greater Ignition OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
3. Ignition ON.
4. Verify the scan tool Driver Window Main Control Down Switch parameter is Inactive. If not Inactive Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver. Test for infinite resistance between the signal circuit terminal 8 and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the M74D Window Motor-Driver. If Inactive
5. Install a 3 A fused jumper wire between the signal circuit terminal 8 and the ground circuit terminal 11.
6. Verify the scan tool Driver Window Main Control Down Switch parameter is Active If not Active Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON. Test for less than 1 V between the signal circuit terminal 8 and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V Test for less than 2 ohms in the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the M74D Window Motor-Driver. If Active
7. Verify the scan tool Driver Window Main Control Up Switch parameter is Inactive. If not Inactive Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver. Test for infinite resistance between the signal circuit terminal 9 and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the M74D Window Motor-Driver. If Inactive
8. Install a 3 A fused jumper wire between the signal circuit terminal 9 and the ground circuit terminal 11.
9. Verify the scan tool Driver Window Main Control Up Switch parameter is Active If not Active Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON. Test for less than 1 V between the signal circuit terminal 9 and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V Test for less than 2 ohms in the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the M74D Window Motor-Driver. If Active
10. Verify the scan tool Driver Window Main Control Express Switch parameter is Inactive. If not Inactive Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver. Test for infinite resistance between the signal circuit terminal 7 and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the M74D Window Motor-Driver. If Inactive
11. Install a 3 A fused jumper wire between the signal circuit terminal 7 and the ground circuit terminal 11.
12. Verify the scan tool Driver Window Main Control Express Switch parameter is Active If not Active Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON. Test for less than 1 V between the signal circuit terminal 7 and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V Test for less than 2 ohms in the signal circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the M74D Window Motor-Driver. If Active
13. Test or replace the S79D Window Switch-Driver.

Passenger Window Inoperative From Both Switches

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S79P Window Switch-Passenger. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the control circuit terminal 3 and ground. If 10 ohms or greater Ignition OFF, disconnect the harness connector at the S79D Window Switch-Driver. Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the S79D Window Switch-Driver. If less than 10 ohms
3. Test for less than 10 ohms between the control circuit terminal 6 and ground. If 10 ohms or greater Ignition OFF, disconnect the harness connector at the S79D Window Switch-Driver. Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the S79D Window Switch-Driver. If less than 10 ohms
4. Connect a test lamp between the control circuit terminal 3 and control circuit terminal 6, ignition ON.
5. Verify the test lamp turns ON when commanding the UP and DOWN functions with the S79D Window Switch-Driver. If the test lamp remains OFF during either of the commands Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Window Switch-Driver. Test for infinite resistance between each control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the S79D Window Switch-Driver. If the test lamp turns ON during each of the commands
6. Ignition OFF and all vehicle systems OFF, connect the harness connector at the S79P Window Switch-Passenger and disconnect the harness connector at the M74P Window Motor-Passenger. It may take up to 2 minutes for all vehicle systems to power down.
7. Test for less than 10 ohms between the control circuit terminal A and ground. If 10 ohms or greater Ignition OFF, disconnect the harness connector at the S79P Window Switch-Passenger. Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the S79P Window Switch-Passenger. If less than 10 ohms
8. Test for less than 10 ohms between the control circuit terminal B and ground. If 10 ohms or greater Ignition OFF, disconnect the harness connector at the S79P Window Switch-Passenger. Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the S79P Window Switch-Passenger. If less than 10 ohms
9. Connect a test lamp between the control circuit terminal A and control circuit terminal B, ignition ON.
10. Verify the test lamp turns ON when commanding the UP and DOWN functions with the S79P Window Switch-Passenger. If the test lamp remains OFF during either of the commands Ignition OFF, remove the test lamp, disconnect the harness connector at the S79P Window Switch-Passenger. Test for infinite resistance between each control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the S79P Window Switch-Passenger. If the test lamp turns ON during each of the commands
11. Test or replace the M74P Window Motor-Passenger.

Passenger Window Inoperative From A Single Switch

1. Ignition OFF, disconnect the harness connector at the appropriate S79P Window Switch-Passenger or S79D Window Switch-Driver, ignition ON
2. Verify a test lamp illuminates between the ignition circuit terminal listed below and ground. S79P Window Switch-Passenger - ignition circuit terminal 5 S79D Window Switch-Driver - ignition circuit terminal 13 If the test lamp does not illuminate Ignition OFF. Test for less than 2 ohms in the ignition circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, verify the fuse is OK and there is voltage at the fuse. If the test lamp illuminates
3. Test or replace the S79P Window Switch-Passenger or S79D Window Switch-Driver,.

Rear Window Inoperative From Both Switches

1. Ignition OFF, disconnect the harness connector at the S79D Window Switch-Driver. Ignition ON
2. Verify a test lamp illuminates between the ignition circuit terminal 6 and ground. If the test lamp does not illuminate and the circuit fuse is good Ignition OFF. Test for less than 2 ohms in the ignition circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, refer to «Retained Accessory Power Malfunction»(ref-542498-S32953561272013041600000) . If the test lamp does not illuminate and the circuit fuse is open Ignition OFF. Test for infinite resistance between the ignition circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for infinite resistance between the control circuit terminals listed below and ground: Control circuit terminal 1 Control circuit terminal 2 Control circuit terminal 3 Control circuit terminal 4 Control circuit terminal 5 If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the S79D Window Switch-Driver. If the test lamp illuminates
3. Ignition OFF and all vehicle systems OFF, connect the harness connector at the S79D Window Switch-Driver and disconnect the harness connector at the appropriate S79 Window Switch-Rear. It may take up to 2 minutes for all vehicle systems to power down
4. Test for less than 10 ohms between the control circuit terminal 3 and ground. If 10 ohms or greater Ignition OFF, disconnect the harness connector at the S79D Window Switch-Driver. Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the S79D Window Switch-Driver. If less than 10 ohms
5. Test for less than 10 ohms between the control circuit terminal 6 and ground. If 10 ohms or greater Ignition OFF, disconnect the harness connector at the S79D Window Switch-Driver. Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the S79D Window Switch-Driver. If less than 10 ohms
6. Connect a test lamp between the control circuit terminal 3 and control circuit terminal 6, ignition ON.
7. Verify the test lamp turns ON when commanding the UP and DOWN states with the S79D Window Switch-Driver. If the test lamp remains OFF during either of the commands Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Window Switch-Driver. Test for infinite resistance between each control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the S79D Window Switch-Driver. If the test lamp turns ON during each of the commands
8. Ignition OFF and all vehicle systems OFF, connect the harness connector at the S79 Window Switch-Rear and disconnect the harness connector at the M74 Window Motor-Rear. It may take up to 2 minutes for all vehicle systems to power down.
9. Test for less than 10 ohms between the control circuit terminal listed below and ground: Control terminal A Control terminal B If 10 ohms or greater Ignition OFF, disconnect the harness connector at the S79 Window Switch-Rear. Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the S79 Window Switch-Rear. If less than 10 ohms
10. Connect a test lamp between the control circuit terminal A and the control circuit terminal B, ignition ON.
11. Verify the test lamp turns ON when commanding the UP and DOWN states with the S79 Window Switch-Rear. If the test lamp remains OFF during either of the commands Ignition OFF, remove the test lamp, disconnect the harness connector at the S79 Window Switch-Rear. Test for infinite resistance between each control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the S79 Window Switch-Rear. If the test lamp turns ON during each of the commands
12. Test or replace the M74 Window Motor-Rear.

Rear Window Lockout Inoperative

1. Ignition OFF, disconnect the harness connector at the appropriate S79 Window Switch-Rear. Ignition ON
2. Connect a test lamp between the control circuit terminal 5 and ground.
3. Verify the test lamp turns ON and OFF when commanding the rear window lockout ON and OFF with the rear window lockout switch. If the test lamp is always OFF Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Window Switch-Driver. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the S79D Window Switch-Driver. If the test lamp is always ON Ignition OFF, remove the test lamp, disconnect the harness connector at the S79D Window Switch-Driver, ignition ON. Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the S79D Window Switch-Driver. If the test lamp turns ON and OFF
4. Test or replace the S79 Window Switch-Rear.

1. Ignition OFF, disconnect the harness connector at the appropriate passenger or rear M74 Window Motor.
2. Install a 20 A fused jumper wire between one of the control terminals and 12 V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the M74 Window Motor should perform the UP and DOWN functions. If the M74 Window Motor does not perform the UP and DOWN functions Replace the passenger or rear M74 Window Motor. If the M74 Window Motor performs the UP and DOWN functions
3. All OK

Side Door Window Mechanical Diagnosis

Side Door Window Mechanical Diagnosis