Page 4879 of 5267

When Monitored:
With the ignition on. Battery voltage greater than 10.4 volts.
Set Condition:
If the Totally Integrated Power Module (TIPM) detects a shorted high condition in the (C123) Condenser Fan
Control circuit.
Possible Causes
(C123) CONDENSER FAN CONTROL OUTPUT CIRCUIT SHORTED TO BATTERY VOLTAGE
EXCESSIVE RESISTANCE IN THE (Z823) GROUND CIRCUIT
CONDENSER FAN MOTOR
TIPM
Diagnostic Test
1.VERIFY DTC IS ACTIVE
Turn the ignition on.
With the scan tool, erase TIPM DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, actuate the Condenser Fan.
With the scan tool, read TIPM DTCs.
Does this DTC reset?
Ye s>>
With the scan tool, de-actuate the Condenser Fan. Then, Go To 2
No>>
With the scan tool, de-actuate the Condenser Fan. Then, check for an intermittent condition by inspect-
ing the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the
related connectors for broken, bent, corroded, and contaminated terminals.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
2.CHECK (C123) CONDENSER FAN CONTROL OUTPUT CIRCUIT FOR A SHORT TO BATTERY VOLTA G E
Turn the ignition off
Disconnect the TIPM C8 harness connector.
Disconnect the Condenser Fan Motor harness connector.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, probe the (C123) Con-
denser Fan Control Output circuit at the Condenser Fan Motor harness
connector.
Does the test light illuminate?
Ye s>>
Repair the (C123) Condenser Fan Control Output circuit for
a short to battery voltage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No>>
Go To 3
Page 4880 of 5267

3.CHECK (Z823) GROUND CIRCUIT FOR AN OPEN
Turn the ignition off.
Reconnect the TIPM C8 harness connector.
NOTE: The test light should illuminate brightly. Compare the
brightness to that of a direct connection to the battery.
Using a 12-volt test light connected to 12 volts, probe the (Z823)
Ground circuit at the Condenser Fan Motor harness connector.
Does the test light illuminate brightly?
Ye s>>
Go To 4
No>>
Repair the excessive resistance in the (Z823) Ground cir-
cuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
4.CHECK CONDENSER FAN MOTOR
Ignition on, engine not running.
With the scan tool, actuate the Condenser Fan.
Using a 12-volt test light connected to ground, probe the (C123) Con-
denser Fan Control Output circuit at the Condenser Fan Motor harness
connector.
Does the test light illuminate brightly and flash on and off?
Ye s>>
With the scan tool, de-actuate the Condenser Fan. Then,
replace the Condenser Fan Motor in accordance with the
Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No>>
With the scan tool, de-actuate the Condenser Fan. Then,
Go To 5
5.INSPECT RELATED WIRING
NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the related wiring harness and connectors.
Pay particular attention to all Power and Ground circuits.
Were any problems found?
Ye s>>
Repair as necessary.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No>>
Replace the TIPM in accordance with the Service Information.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
Page 4885 of 5267

3.CHECK CONDENSER FAN MOTOR
Reconnect the TIPM C8 harness connector.
Ignition on, engine not running.
With the scan tool, actuate the Condenser Fan.
Using a 12-volt test light connected to ground, probe the (C123) Con-
denser Fan Control Output circuit at the Condenser Fan harness con-
nector.
Does the test light illuminate brightly and flash on and off?
Ye s>>
With the scan tool, de-actuate the Condenser Fan. Then,
replace the Condenser Fan Motor in accordance with the
Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No>>
With the scan tool, de-actuate the Condenser Fan. Then,
Go To 4
4.INSPECT RELATED WIRING
NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors.
Pay particular attention to all Power and Ground circuits.
Were any problems found?
Ye s>>
Repair as necessary.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No>>
Replace the Totally Integrated Power Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
Page 4888 of 5267

3.CHECK THE (F942) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT FUNCTION
Connect one end of a jumper wire to the (F942) Fused Ignition Switch
Output (Run-Start) circuit in the Blower Motor harness connector and
connect the other end of the jumper wire to a clean chassis ground.
NOTE: The test light should illuminate brightly. Compare the
brightness to that of a direct connection to the battery.
Using a 12-volt test light connected to 12 volts, probe the (F942) Fused
Ignition Switch Output (Run-Start) circuit in the TIPM C3 harness con-
nector.
Does the test light illuminate brightly?
Ye s>>
Go To 4
No>>
Repair the (F942) Fused Ignition Switch Output (Run-Start)
circuit for high resistance.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
4.CHECK (C70) BLOWER MOTOR HIGH DRIVER CIRCUIT & (Z134) GROUND CIRCUIT FUNCTION
Remove the jumper wire from the Blower Motor harness connector.
Turn the blower control on.
NOTE: The test light should illuminate brightly. Compare the
brightness to that of a direct connection to the battery.
Using a 12-volt test light connected to 12 volts, probe the (C70) Blower
Motor High Driver circuit in the Blower Motor harness connector.
Does the test light illuminate brightly?
Ye s>>
Go To 5
No>>
Go To 7
Page 4889 of 5267

5.CHECK THE OUTPUT FROM THE TIPM ON THE (F942) FUSED IGNITION SWITCH OUTPUT (RUN-START)
CIRCUIT
Reconnect the TIPM C3 harness connector.
Turn the ignition on.
With a scan tool in TIPM, select Actuators, and actuate the Blower
Motor.
Using the 12-volt test light connected to ground, probe the (F942)
Fused Ignition Switch Output (Run-Start) circuit in the Blower Motor har-
ness connector.
Does the test light illuminate brightly?
Ye s>>
Go To 6
No>>
Replace the TIPM in accordance with the Service Informa-
tion.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
6.CHECK FOR A BLOCKAGE STALLING THE BLOWER MOTOR
Turn the ignition off.
Remove the blower motor from the HVAC housing assembly.
Look for anything on the blower motor and in the HVAC housing that is physically preventing blower motor opera-
tion.
Is anything physically preventing blower operation?
Ye s>>
Repair as necessary. Also, check blower motor for proper operation. Reinstall or replace the blower
motor as necessary in accordancewith the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No>>
Replace the blower motor in accordance with the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
7.CHECK THE (C70) BLOWER MOTOR HIGH DRIVER CIRCUIT FOR HIGH RESISTANCE
Disconnect the A/C Heater Control C2 harness connector.
Measure the resistance of the (C70) Blower Motor High Driver circuit
between the A/C Heater Control C2 harness connector and the Blower
Motor harness connector.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 8
No>>
Repair the (C70) Blower Motor High Driver circuit for high
resistance.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
Page 4893 of 5267

3.CHECK (C123) CONDENSER FAN CONTROL OUTPUT CIRCUIT FOR HIGH RESISTANCE
Connect one end of a jumper wire to the (C123) Condenser Fan Control
Output circuit in the Condenser Fan Motor harness connector and con-
nect the other end to a clean chassis ground.
Using a 12-volt test light connected to 12 volts, probe the (C123) Con-
denser Fan Control Output circuit in the TIPM C8 harness connector.
NOTE: The test light should illuminate brightly. Compare the
brightness to that of a direct connection to the battery.
Does the test light illuminate brightly.
Ye s>>
Go To 4
No>>
Repair the excessive resistance in the (C123) Condenser
Fan Control Output circuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
4.CHECK (Z823) GROUND CIRCUIT
Using a 12-volt test light connected to 12 volts, probe the (Z823)
Ground circuit in the Condenser Fan Motor harness connector.
NOTE: The test light should illuminate brightly. Compare the
brightness to that of a direct connection to the battery.
Does the test light illuminate brightly.
Ye s>>
Go To 5
No>>
Repair the excessive resistance in the (Z823) Ground cir-
cuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
Page 4894 of 5267
5.CHECK (C123) CONDENSER FAN CONTROL OUTPUT FROM TIPM
Reconnect the TIPM C8 harness connector.
Ignition on, engine not running.
With a scan tool, actuate the Condenser Fan.
Using the 12-Volt test light connected to ground, probe the (C123) Con-
denser Fan Control Output circuit in the Condenser Fan Motor harness
connector.
Does the test light illuminate brightly?
Ye s>>
With a scan tool, de-actuate the Condenser Fan. Then,
replace the Condenser Fan Motor in accordance with the
Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No>>
With a scan tool, de-actuate the Condenser Fan. Then,
replace the TIPM in accordance with the Service Informa-
tion.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
Page 5043 of 5267
Possible Causes
(F942) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN
(C70) BLOWER MOTOR HIGH DRIVER CIRCUIT OPEN
(Z134) GROUND CIRCUIT OPEN
BLOWER MOTOR
A/C HEATER CONTROL
TIPM
Diagnostic Test
1.CHECK FOR DTCs IN THE TIPM
Turn the ignition on.
With the scan tool, read TIPM DTCs.
Does the scan tool display any DTCs?
Ye s>>
Diagnose and repair the DTC(s). Refer to the Table of Contents in the applicable section for the diag-
nostic procedure.
No>>
Go To 2
2.CHECK OUTPUT FROM THE TIPM ON THE (F942) FUSED IGNITION SWITCH OUTPUT (RUN-START)
CIRCUIT
Turn the ignition off.
Disconnect the Blower Motor harness connector.
Turn the ignition on.
With a scan tool in TIPM, select Actuators, and actuate the Blower
Motor.
Using the 12-volt test light connected to ground, probe the (F942)
Fused Ignition Switch Output (Run-Start) circuit in the Blower Motor har-
ness connector.
Does the test light illuminate brightly?
Ye s>>
Go To 3
No>>
Go To 4