Seat Heating System - Electrical Diagnostics: Other Dodge Durango II рестайлинг

Monitor Conditions

1. When Monitored: Ignition on, during the heated seat operation.

Set Conditions

1. Set Condition: This code is set immediately after the Cluster detects the heated seat switch MUX circuit low.

Possible Causes

Scheme 6

Scheme 7

Scheme 8

Scheme 9

1. 1) VERIFY THAT DTC B1085-LEFT HEATED SEAT SWITCH INPUT CIRCUIT LOW IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1085 LEFT HEATED SEAT SWITCH INPUT CIRCUIT LOW reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) INSPECT JUNCTION BLOCK FUSE No. 2 Check the Junction Block Fuse No. 2. Is the fuse open? Yes Check for a possible short to ground on the (F21) Fused Ignition Switch Output Circuit and replace the fuse as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 3) .
3. 3) DISCONNECT THE CLUSTER C-1 CONNECTOR AND CHECK FOR VOLTAGE Reinstall the fuse if removed in previous test. Disconnect the Cluster C-1 connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage at the (P7) Driver Heated Seat Switch MUX circuit at the Cluster C-1 connector. Is the voltage above 10.0 volts? Yes Replace the Cluster in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 4) .
4. 4) CHECK THE (F21) FUSED IGNITION SWITCH OUTPUT (RUN-START) Disconnect the Driver Heated Seat switch connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage of the (F21) Fused Ignition Switch Output circuit at the Driver Heated Seat Switch connector. Is the voltage above 10.0 volts ? Yes Go to 5) . No Repair the (F21) Fused Ignition Switch Output circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
5. 5) CHECK THE (P7) DRIVER HEATED SEAT SWITCH MUX CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (P7) Driver Heated Seat Switch MUX circuit. Was the resistance below 5.0 ohms? Yes Repair the (P7) Driver Heated Seat Switch MUX circuit for a short to ground Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 6) .
6. 6) CHECK THE (P7) DRIVER HEATED SEAT SWITCH MUX CIRCUIT FOR AN OPEN Measure the resistance of the (P7) Driver Heated Seat Switch MUX circuit between the Cluster C-1 connector and the Driver Heated Seat Switch connector. Is the resistance below 5.0 ohms? Yes Replace the Driver Heated Seat Switch. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (P7) Driver Heated Seat Switch MUX circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 10

1. When Monitored: Ignition on, during the heated seat operation.

1. Set Condition: This code is set immediately after the Cluster detects the heated seat switch MUX circuit low.

Scheme 11

Scheme 12

Scheme 13

Scheme 14

1. 1) VERIFY THAT DTC B1088-RIGHT HEATED SEAT SWITCH INPUT CIRCUIT LOW IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1088 RIGHT HEATED SEAT SWITCH INPUT CIRCUIT LOW reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) INSPECT JUNCTION BLOCK FUSE No. 2 Check the Junction Block Fuse No. 2. Is the fuse open? Yes Check for a possible short to ground on the (F21) Fused Ignition Switch Output Circuit and replace the fuse as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 3) .
3. 3) DISCONNECT THE CLUSTER C-1 CONNECTOR AND CHECK FOR VOLTAGE Reinstall the fuse if removed in previous test. Disconnect the Cluster C-1 connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage at the (P8) Passenger Heated Seat Switch MUX circuit at the Cluster C-1 connector. Is the voltage above 10.0 volts? Yes Replace the Cluster in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 4) .
4. 4) CHECK THE (F21) FUSED IGNITION SWITCH OUTPUT (RUN-START) Disconnect the Passenger Heated Seat switch connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage of the (F21) Fused Ignition Switch Output circuit at the Passenger Heated Seat Switch connector. Is the voltage above 10.0 volts ? Yes Go to 5) . No Repair the (F21) Fused Ignition Switch Output circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
5. 5) CHECK THE (P8) PASSENGER HEATED SEAT SWITCH MUX CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (P8) Passenger Heated Seat Switch MUX circuit. Was the resistance below 5.0 ohms? Yes Repair the (P8) Passenger Heated Seat Switch MUX circuit for a short to ground Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 6) .
6. 6) CHECK THE (P8) PASSENGER HEATED SEAT SWITCH MUX CIRCUIT FOR AN OPEN Measure the resistance of the (P8) Passenger Heated Seat Switch MUX circuit between the Cluster C-1 connector and the Passenger Heated Seat Switch connector. Is the resistance below 5.0 ohms? Yes Replace the Passenger Heated Seat Switch. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (P8) Passenger Heated Seat Switch MUX circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 15

1. When Monitored: Ignition on, during the heated seat operation.

1. Set Condition: This code is set immediately after the Heated Seat Module detects the control circuit shorted to ground.

Scheme 16

Scheme 17

1. 1) VERIFY THAT DTC B1092-FRONT LEFT SEAT HEATER CONTROL CIRCUIT LOW IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1092 FRONT LEFT SEAT HEATER CONTROL CIRCUIT LOW reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) DISCONNECT DRIVER CUSHION PAD HEATER 2-WAY CONNECTOR AND READ DTC'S Disconnect the Driver Cushion Pad Heater connector. NOTE: Check connectors - Clean and repair as necessary. With the scan tool, erase HSM DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the scan tool display the same DTC? Yes Go to 7) . No Go to 3) .
3. 3) CHECK THE DRIVER SEAT BACK PAD HEATER RESISTANCE Disconnect the Driver Seat Back Pad Heater connector. NOTE: Check connectors - Clean and repair as necessary. Check the resistance of the seat back heater element by measuring between the (P187) Driver Seat Heater B(+) Driver and the Ground circuit at the driver seat back pad connector. Is the resistance below 4.0 ohms? No Go to 4) . Yes Replace the seat back heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
4. 4) CHECK THE DRIVER SEAT BACK PAD HEATER FOR A SHORT TO GROUND Measure between the (P187) Driver Seat Heater B(+) Driver circuit at the Driver Seat Back Pad Heater connector and the seat frame for a short to ground. Is the resistance below 1000 ohms? Yes Repair the pigtail harness for a short to ground condition or replace the seat back heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 5) .
5. 5) CHECK THE DRIVER CUSHION PAD HEATER RESISTANCE Check the resistance of the cushion heater element by measuring between the (P187) Driver Seat Heater B(+) Driver and the Ground circuit at the driver cushion pad connector. Was the resistance below 3.5 ohms? No Go to 6) . Yes Replace the heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
6. 6) CHECK THE DRIVER CUSHION PAD HEATER FOR A SHORT TO GROUND Measure between the (P187) Driver Seat Heater B(+) Driver circuit at the Driver Cushion Pad Heater connector and the seat frame for a short to ground. Is the resistance below 1000 ohms? Yes Repair the pigtail harness or replace the heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
7. 7) Check the (P187) Driver Seat Heater B(+) Driver circuit for a short to ground Disconnect the Heat Seat Module connector. NOTE: Check connectors - Clean and repair as necessary. Measure the (P187) Driver Seat Heater B(+) Driver circuit to ground at the HSM connector. Is the resistance below 5.0 ohms? Yes Repair the (P187) Driver Seat Heater B(+) Driver circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Replace the Heated Seat Module. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 18

1. When Monitored: Ignition on, during the heated seat operation.

1. Set Condition: This code is set immediately after the Heated Seat Module detects an open in the seat heater B(+) driver circuit.

Scheme 19

Scheme 20

1. 1) VERIFY THAT DTC B1094-FRONT LEFT SEAT HEATER CONTROL CIRCUIT OPEN IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1094 FRONT LEFT SEAT HEATER CONTROL CIRCUIT OPEN reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) CHECK FOR AN OPEN SEAT HEATER ELEMENT Disconnect the Driver Cushion Pad Heater 2 - way connector. NOTE: Check connectors - Clean and repair as necessary. Measure the total resistance of the cushion and seat back heater elements at the Driver Cushion Pad 2 - way connector (seat side). Is the total resistance 2.5 ohms + or -.5 ohms? Yes Go to 4) . No Go to 3) .
3. 3) CHECK THE DRIVER SEAT BACK PAD HEATER RESISTANCE Disconnect the Driver Seat Back Pad Heater 2 - way connector. NOTE: Check connectors - Clean and repair as necessary. Check the resistance of the seat back heater element by measuring between the (P187) Driver Seat Heater B(+) Driver and the Ground circuit at the connector. Is the resistance above 5.8 ohms? Yes Repair the open pigtail harness or replace the seat back heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the open pigtail harness or replace the seat cushion heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
4. 4) CHECK THE DRIVER SEAT HEATER GROUND CIRCUIT RESISTANCE Measure the resistance of the Ground circuit at the Heater Cushion Pad 2 - way connector. Was the resistance below 5.0 ohms? Yes Go to 5) . No Repair the open ground circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
5. 5) Check the (P187) Driver Seat Heater B(+) Driver circuit for an open. Disconnect the Heated Seat Module connector. NOTE: Check connectors - Clean and repair as necessary. Measure the (P187) Driver Seat Heater B(+) Driver circuit from the Driver Cushion Pad connector to the HSM connector. Is the resistance below 5.0 ohms? Yes Replace the Heated Seat Module. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (P187) Driver Seat Heater B(+) Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 21

1. When Monitored: Ignition on, during the heated seat operation.

1. Set Condition: This code is set immediately after the Heated Seat Module detects the seat heater B(+) circuit shorted to ground.

Scheme 22

Scheme 23

1. 1) VERIFY THAT DTC B1096-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT LOW IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1096-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT LOW reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) DISCONNECT PASSENGER CUSHION PAD HEATER 2-WAY CONNECTOR AND READ DTC'S Disconnect the Passenger Cushion Pad Heater connector. NOTE: Check connectors - Clean and repair as necessary. With the scan tool, erase HSM DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the scan tool display the same DTC? Yes Go to 7) . No Go to 3) .
3. 3) CHECK THE PASSENGER SEAT BACK PAD HEATER RESISTANCE Disconnect the Passenger Seat Back Pad Heater connector. NOTE: Check connectors - Clean and repair as necessary. Check the resistance of the seat back heater element by measuring between the (P188) Passenger Seat Heater B(+) Driver and the Ground circuit at the Passenger Seat Back Pad connector. Is the resistance below 4.0 ohms? No Go to 4) . Yes Replace the seat back heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
4. 4) CHECK THE PASSENGER SEAT BACK PAD HEATER FOR A SHORT TO GROUND Measure between the (P188) Passenger Seat Heater B(+) Driver circuit at the Passenger Seat Back Pad Heater connector and the seat frame for a short to ground. Is the resistance below 1000 ohms? Yes Repair the pigtail harness for a short to ground condition or replace the seat back heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 5) .
5. 5) CHECK THE PASSENGER CUSHION PAD HEATER RESISTANCE Check the resistance of the cushion heater element by measuring between the (P188) Passenger Seat Heater B(+) Driver and the Ground circuit at the Passenger Cushion Pad Heater connector. Was the resistance below 3.5 ohms? No Go to 6) . Yes Replace the heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
6. 6) CHECK THE PASSENGER CUSHION PAD HEATER FOR A SHORT TO GROUND Measure between the (P188) Passenger Seat Heater B(+) Driver circuit at the Passenger Cushion Pad Heater connector and the seat frame for a short to ground. Is the resistance below 1000 ohms? Yes Repair the pigtail harness or replace the heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
7. 7) Check the (P188) Passenger Seat Heater B(+) Driver circuit for a short to ground Disconnect the Heated Seat Module connector. NOTE: Check connectors - Clean and repair as necessary. Measure the (P188) Passenger Seat Heater B(+) Driver circuit to ground at the HSM connector. Is the resistance below 5.0 ohms? Yes Repair the (P188) Passenger Seat Heater B(+) Driver circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Replace the Heated Seat Module. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 24

1. When Monitored: Ignition on, during the heated seat operation.

1. Set Condition: This code is set immediately after the Heated Seat Module detects an open in the seat heat B(+) driver circuit.

Scheme 25

Scheme 26

1. 1) VERIFY THAT DTC B1098-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT OPEN IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1098 FRONT RIGHT SEAT HEATER CONTROL CIRCUIT OPEN reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) CHECK FOR AN OPEN SEAT HEATER ELEMENT Disconnect the Passenger Cushion Pad Heater 2 - way connector. NOTE: Check connectors - Clean and repair as necessary. Measure the total resistance of the cushion and seat back heater elements at the Passenger Cushion Pad 2 - way connector (seat side). Is the total resistance 2.5 ohms + or -.5 ohms? Yes Go to 4) . No Go to 3) .
3. 3) CHECK THE PASSENGER SEAT BACK PAD HEATER RESISTANCE Disconnect the Passenger Seat Back Pad Heater 2 - way connector. NOTE: Check connectors - Clean and repair as necessary. Check the resistance of the seat back heater element by measuring between the (P188) Passenger Seat Heater B(+) Driver and the Ground circuit at the passenger seat back pad connector. Is the resistance above 5.8 ohms? Yes Repair the open pigtail harness or replace the seat back heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the open pigtail harness or replace the seat cushion heater element as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
4. 4) CHECK THE PASSENGER SEAT HEATER GROUND CIRCUIT RESISTANCE Measure the resistance of the Ground circuit at the Heater Cushion Pad 2 - way connector. Was the resistance below 5.0 ohms? Yes Go to 5) . No Repair the open ground circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
5. 5) Check the (P188) Passenger Seat Heater B(+) Driver circuit for an open. Disconnect the Heated Seat Module connector. NOTE: Check connectors - Clean and repair as necessary. Measure the (P188) Passenger Seat Heater B(+) Driver circuit from the Passenger Cushion Pad connector to the HSM connector. Is the resistance below 5.0 ohms? Yes Replace the Heated Seat Module. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (P188) Passenger Seat Heater B(+) Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 27

1. When Monitored: Continuously with the ignition on.

1. Set Condition: This code is set immediately when the Cluster detects low voltage on the heated seat indicator control circuit.

Scheme 28

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Scheme 30

1. 1) VERIFY THAT DTC B120D-LEFT HEATED SEAT HI INDICATOR CONTROL CIRCUIT LOW IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B120D-LEFT HEATED SEAT HI INDICATOR CONTROL CIRCUIT LOW reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) INSPECT JUNCTION BLOCK FUSE No. 2 Check Junction Block fuse No. 2. Is the fuse open? Yes Check for a possible short to ground on the (F21) Fused Ignition Switch Output Circuit and replace the fuse as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 3) .
3. 3) DISCONNECT THE CLUSTER C-3 CONNECTOR AND CHECK FOR VOLTAGE Reinstall fuse if removed in previous test. Disconnect the Cluster C-3 connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage at the (P83) Driver Heated Seat High Indicator Driver circuit at the Cluster C-3 connector. Is the voltage above 10.0 volts? Yes Replace the Cluster in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 4) .
4. 4) CHECK THE (F21) FUSED IGNITION SWITCH OUTPUT (RUN-START) Disconnect the Driver Heated Seat switch connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage of the (F21) Fused Ignition Switch Output circuit at the Driver Heated Seat Switch connector. Is the voltage above 10.0 volts ? Yes Go to 5) . No Repair the (F21) Fused Ignition Switch Output circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
5. 5) CHECK THE (P83) DRIVER HEATED SEAT HIGH INDICATOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (P83) Driver Heated Seat High Indicator Driver circuit. Was the resistance below 5.0 ohms? Yes Repair the (P83) Driver Heated Seat High Indicator Driver circuit for a short to ground Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 6) .
6. 6) CHECK THE (P83) DRIVER HEATED SEAT HIGH INDICATOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (P83) Driver Heated Seat High Indicator Driver circuit between the Cluster C-3 connector and the Driver Heated Seat Switch connector. Is the resistance below 5.0 ohms? Yes Replace the Driver Heated Seat Switch. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (P83) Driver Heated Seat High Indicator Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 31

1. When Monitored: Continuously with the ignition on.

1. Set Condition: This code is set immediately when the Cluster detects excessive voltage on the heated seat indicator control circuit.

1. When Monitored: Continuously with the ignition on.

1. Set Condition: This code is set immediately when the Cluster detects low voltage on the heated seat indicator control circuit.

Scheme 32

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Scheme 34

1. 1) VERIFY THAT DTC B1215-LEFT HEATED SEAT LO INDICATOR CONTROL CIRCUIT LOW IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1215-LEFT HEATED SEAT LO INDICATOR CONTROL CIRCUIT LOW reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) INSPECT JUNCTION BLOCK FUSE No. 2 Check Junction Block fuse No. 2. Is the fuse open? Yes Check for a possible short to ground on the (F21) Fused Ignition Switch Output Circuit and replace the fuse as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 3) .
3. 3) DISCONNECT THE CLUSTER C-3 CONNECTOR AND CHECK FOR VOLTAGE Reinstall fuse if removed in previous test. Disconnect the Cluster C-3 connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage at the (P81) Driver Heated Seat Low Indicator Driver circuit at the Cluster C-3 connector. Is the voltage above 10.0 volts? Yes Replace the Cluster in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 4) .
4. 4) CHECK THE (F21) FUSED IGNITION SWITCH OUTPUT (RUN-START) Disconnect the Driver Heated Seat switch connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage of the (F21) Fused Ignition Switch Output circuit at the Driver Heated Seat Switch connector. Is the voltage above 10.0 volts ? Yes Go to 5) . No Repair the (F21) Fused Ignition Switch Output circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
5. 5) CHECK THE (P81) DRIVER HEATED SEAT LO INDICATOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (P81) Driver Heated Seat Lo Indicator Driver circuit. Was the resistance below 5.0 ohms? Yes Repair the (P81) Driver Heated Seat Lo Indicator Driver circuit for a short to ground Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 6) .
6. 6) CHECK THE (P81) DRIVER HEATED SEAT LO INDICATOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (P81) Driver Heated Seat Lo Indicator Driver circuit between the Cluster C-3 connector and the Driver Heated Seat Switch connector. Is the resistance below 5.0 ohms? Yes Replace the Driver Heated Seat Switch. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (P81) Driver Heated Seat Lo Indicator Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 35

1. When Monitored: Continuously with the ignition on.

1. Set Condition: This code is set immediately when the Cluster detects excessive voltage on the heated seat indicator control circuit.

1. When Monitored: Continuously with the ignition on.

1. Set Condition: This code is set immediately when the Cluster detects low voltage on the heated seat indicator control circuit.

Scheme 36

Scheme 37

Scheme 38

1. 1) VERIFY THAT DTC B1219-RIGHT HEATED SEAT HI INDICATOR CONTROL CIRCUIT LOW IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1219-RIGHT HEATED SEAT HI INDICATOR CONTROL CIRCUIT LOW reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) INSPECT JUNCTION BLOCK FUSE No. 2 Check Junction Block fuse No. 2. Is the fuse open? Yes Check for a possible short to ground on the (F21) Fused Ignition Switch Output Circuit and replace the fuse as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 3) .
3. 3) DISCONNECT THE CLUSTER C-3 CONNECTOR AND CHECK FOR VOLTAGE Reinstall fuse if removed in previous test. Disconnect the Cluster C-3 connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage at the (P84) Passenger Heated Seat High Indicator Driver circuit at the Cluster C-3 connector. Is the voltage above 10.0 volts? Yes Replace the Cluster in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 4) .
4. 4) CHECK THE (F21) FUSED IGNITION SWITCH OUTPUT (RUN-START) Disconnect the Passenger Heated Seat switch connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage of the (F21) Fused Ignition Switch Output circuit at the Passenger Heated Seat Switch connector. Is the voltage above 10.0 volts ? Yes Go to 5) . No Repair the (F21) Fused Ignition Switch Output circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
5. 5) CHECK THE (P84) PASSENGER HEATED SEAT HIGH INDICATOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (P84) Passenger Heated Seat High Indicator Driver circuit. Was the resistance below 5.0 ohms? Yes Repair the (P84) Passenger Heated Seat High Indicator Driver circuit for a short to ground Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 6) .
6. 6) CHECK THE (P84) PASSENGER HEATED SEAT HIGH INDICATOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (P84) Passenger Heated Seat High Indicator Driver circuit between the Cluster C-3 connector and the Passenger Heated Seat Switch connector. Is the resistance below 5.0 ohms? Yes Replace the Passenger Heated Seat Switch. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (P84) Passenger Heated Seat High Indicator Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 39

1. When Monitored: Continuously with the ignition on.

1. Set Condition: This code is set immediately when the Cluster detects excessive voltage on the heated seat indicator control circuit.

1. When Monitored: Continuously with the ignition on.

1. Set Condition: This code is set immediately when the Cluster detects low voltage on the heated seat indicator control circuit.

Scheme 40

Scheme 41

Scheme 42

1. 1) VERIFY THAT DTC B1221-RIGHT HEATED SEAT LO INDICATOR CONTROL CIRCUIT LOW IS ACTIVE With the scan tool, record and erase DTC's Operate the Heated Seat Switch in both positions several times. With the scan tool, read DTC's. Does the DTC B1221-RIGHT HEATED SEAT LO INDICATOR CONTROL CIRCUIT LOW reset? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) INSPECT JUNCTION BLOCK FUSE No. 2 Check Junction Block fuse No. 2. Is the fuse open? Yes Check for a possible short to ground on the (F21) Fused Ignition Switch Output Circuit and replace the fuse as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 3) .
3. 3) DISCONNECT THE CLUSTER C-3 CONNECTOR AND CHECK FOR VOLTAGE Reinstall fuse if removed in previous test. Disconnect the Cluster C-3 connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage at the (P82) Passenger Heated Seat Low Indicator Driver circuit at the Cluster C-3 connector. Is the voltage above 10.0 volts? Yes Replace the Cluster in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 4) .
4. 4) CHECK THE (F21) FUSED IGNITION SWITCH OUTPUT (RUN-START) Disconnect the Passenger Heated Seat switch connector. NOTE: Check connectors - Clean and repair as necessary. Turn the ignition on. Measure the voltage of the (F21) Fused Ignition Switch Output circuit at the Passenger Heated Seat Switch connector. Is the voltage above 10.0 volts ? Yes Go to 5) . No Repair the (F21) Fused Ignition Switch Output circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
5. 5) CHECK THE (P82) PASSENGER HEATED SEAT LO INDICATOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (P82) Passenger Heated Seat Lo Indicator Driver circuit. Was the resistance below 5.0 ohms? Yes Repair the (P82) Passenger Heated Seat Lo Indicator Driver circuit for a short to ground Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Go to 6) .
6. 6) CHECK THE (P82) PASSENGER HEATED SEAT LO INDICATOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (P82) Passenger Heated Seat Lo Indicator Driver circuit between the Cluster C-3 connector and the Passenger Heated Seat Switch connector. Is the resistance below 5.0 ohms? Yes Replace the Passenger Heated Seat Switch. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (P82) Passenger Heated Seat Lo Indicator Driver circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

Scheme 43

1. When Monitored: Continuously with the ignition on.

1. Set Condition: This code is set immediately when the Cluster detects excessive voltage on the heated seat indicator control circuit.

1. When Monitored: Engine running, during heated seat operation.

1. Set Condition: This code is set immediately after the Heated Seat Module receives a low charging system voltage message over the CAN B Bus or detects voltage under 11.3 volts on the (A940) Fused B(+) circuit.

Scheme 44

1. 1) CHECK PCM FOR CHARGING SYSTEM DTC With the scan tool, read Powertrain Control Module DTC's. Are there any Charging System DTC's set in the Powertrain Control Module? Yes Refer to «DIAGNOSIS AND TESTING»(ref-285344-S11191844052008052100000) for Charging System diagnostic procedures. No Go to 2) . Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
2. 2) VERIFY THAT DTC B210D-BATTERY VOLTAGE LOW IS ACTIVE With the scan tool, record and erase DTC's Turn the ignition switch to the Off position then start the engine and let run for one minute. With the scan tool, read DTC's. Does the DTC B210D-BATTERY VOLTAGE LOW reset? Yes Go to 3) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
3. 3) CHECK THE VOLTAGE ON THE (A940) FUSED B(+) CIRCUIT Disconnect the Heated Seat Module connector. NOTE: Check connectors - Clean and repair as necessary. Start the engine and let idle. Measure the voltage on the (A940) Fused B(+) circuit at the HSM connector and compare to voltage at the vehicle battery. Is the voltage at the HSM connector the same as measured at the battery? Yes Replace the Heated Seat Module in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the (A940) Fused B(+) circuit as necessary. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .

1. When Monitored: Engine running, during heated seat operation.

1. Set Condition: This code is set immediately after the Heated Seat Module receives a high charging system voltage message over the CAN B Bus or detects voltage over 15 volts on the (A940) Fused B(+) circuit.

1. When Monitored: Ignition on.

1. Set Condition: This code is set immediately if the Heated Seat Module internal self test fails.

1. When Monitored: Continuously

1. Set Condition: Whenever the Can B Bus (+) or B Bus (-) circuit is open, shorted to voltage or shorted to ground, this code will set.

Scheme 45

Scheme 46

1. 1) TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTC's Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read DTC's. Does the scan tool display U0019 CAN B BUS CIRCUIT? Yes Go to 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
2. 2) CHECK FRONT CONTROL MODULE DTC's With the scan tool, read Front Control Module DTC's Does the scan tool display any CAN B BUS DTC's - ACTIVE? Yes Refer to the symptom list for problems related to Communication in «ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS»(ref-285334-S07084592052008052100000) . No Go to 3) .
3. 3) CAN B BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the Heated Seat Module connector. Disconnect the Front Control Module C1 connector. Measure the resistance of the (D55) Can B Bus (+) circuit between the Front Control Module C1 connector and the Heated Seat Module connector. Is the resistance below 2.0 ohms? Yes Go to 4) . No Repair the Can B Bus (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .
4. 4) CAN B BUS (-) CIRCUIT OPEN Measure the resistance of the (D54) Can B Bus (-) circuit between the Front Control Module C1 connector and the Heated Seat Module connector. Is the resistance below 2.0 ohms? Yes Replace the Heated Seat Module. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) . No Repair the Can B Bus (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-285334-S04155882182008052100000) .