For 1990-2009 cars
ABS Components
ABS/TCS Schematics
Handling ESD Sensitive Parts Notice
Power Distribution Schematics

### Circuit Description

The pump motor is an integral part of the BPMV, while the pump motor relay is integral to the EBCM/EBTCM. The pump motor relay is not engaged during normal system operation. When ABS or TCS operation is required the EBCM/EBTCM activates the pump motor relay and battery power is provided to the pump motor.

### Conditions for Setting the DTC

• | Pump motor voltage is not present 60 milliseconds after activation of the pump motor relay.

• | Pump motor voltage is present for more than 2.5 seconds with no activation of the pump motor relay.

• | Pump motor voltage is not present for 40 milliseconds after the pump motor relay is commanded off.

### Action Taken When the DTC Sets

• | A malfunction DTC stores.

• | The ABS/TCS disables.

• | The amber ABS/TCS indicator(s) turn on.

• | The Red BRAKE Warning indicator turns on.

### Conditions for Clearing the DTC

• | The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.

• | 100 ignition cycles pass with no DTC(s) detected.

| Important: After the DTC is cleared using ignition cycle default, the vehicle must be driven above 12 Km/h (8 mph) for the ABS/TCS indicator(s) to turn off.

### Diagnostic Aids

• | It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.

• | Thoroughly inspect any circuitry that may be causing the complaint for the following conditions:

- | Backed out terminals

- | Improper mating

- | Broken locks

- | Improperly formed or damaged terminals

- | Poor terminal-to-wiring connections

- | Physical damage to the wiring harness

• | The following conditions may cause an intermittent malfunction:

- | A poor connection

- | Rubbed-through wire insulation

- | A broken wire inside the insulation

• | If an intermittent malfunction exists refer to Troubleshooting Procedures Cell 4 in Electrical Diagnosis for further diagnosis.

### Test Description

The numbers below refer to step numbers on the diagnostic table.

1. This step checks for a short to ground in CKT 302.

2. This step checks for an open in CKT 302.

#### DTC C0110 Pump Motor Circuit Malfunction

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the Diagnostic System Check performed? | -- | Go to Step 2 | Go to Diagnostic System Check
2 | Inspect the 40A ABS BATT 1 Maxifuse® , in the Underhood Electrical Center 1. Is the fuse OK? | -- | Go to Step 7 | Go to Step 3
3 |

1. Install a new 40A ABS BATT Maxifuse®.
2. Cycle the ignition switch from the OFF to RUN position, engine OFF.
3. Using a scan tool in ABS/TCS Special Functions attempt to run the AUTOMATED test.
4. Recheck the 40A ABS BATT 1 Maxifuse® fuse.

Is the fuse OK?

--

Go to Step 16

Go to Step 4

4 |

1. Turn the Ignition switch to the OFF position.
2. Remove the 40A ABS BATT 1 Maxifuse®.
3. Disconnect the EBCM/EBTCM connector C1.
4. Connect the J 39700 Universal Pinout Box using the J 39700-530 cable adapter to the EBCM/EBTCM harness connector only.
5. Using J 39200 DMM, measure the resistance between terminals 13 and 15 of J 39700 .

Is the resistance within the range specified in the value(s) column?

OL (infinite)

Go to Step 5

Go to Step 12

5 |

1. Disconnect the EBCM/EBTCM pump motor connector C2.
2. Connect a 10A fused jumper wire between the pump motor connector C2 terminal 1 and battery voltage.
3. Connect a jumper wire between the pump motor connector C2 terminal 2 and ground. Only attempt to run the pump motor for 5 seconds.
4. Disconnect the jumper wires.
5. Inspect the 10A fuse in the jumper wire.

Is the fuse OK?

--

Go to Step 11

Go to Step 6

6 | Replace the BPMV. Refer to Brake Pressure Modulator Valve Replacement . Is the replacement complete? | -- | Go to Step 16 | --
7 |

1. Turn the Ignition switch to the OFF position.
2. Disconnect the EBCM/EBTCM connector C1.
3. Connect J 39700 Universal Pinout Box using the J 39700-530 cable adaptor to the EBCM/EBTCM harness connector C1 only.
4. Using J 39200 DMM, measure the resistance between terminals 12 and 15 of J 39700 .

Is the resistance within the range specified in the value(s) column?

0-5 ohms

Go to Step 9

Go to Step 8

8 | Repair CKT 150 for an open or high resistance. Refer to Repair Procedures Cell 5 in Electrical Diagnosis. Is the repair complete? | -- | Go to Step 16 | --
9 |

1. Install the fuse if removed.
2. Using J 39200 DMM, measure the voltage at the 40A ABS BATT 1 Maxifuse® by probing between the fuse test terminals and a good ground.

Is the voltage within the range specified in the value(s) column?

Battery volts

Go to Step 10

Go to Power Distribution Cell 10 in Electrical Diagnosis

10 | Using J 39200 DMM, measure the voltage at terminal 13 of J 39700 . Is the voltage within the range specified in the value(s) column? | Battery volts | Go to Step 14 | Go to Step 13
11 | Replace EBCM/EBTCM. Refer to Electronic Brake Control Module Replacement . Is the replacement complete? | -- | Go to Diagnostic System Check | --
12 | Repair short to ground in CKT 302. Refer to Repair Procedures Cell 5 in Electrical Diagnosis. Is the repair complete? | -- | Go to Step 16 | --
13 | Repair open in CKT 302. Refer to Repair Procedures Cell 5 in Electrical Diagnosis. Is the repair complete? | -- | Go to Step 16 | --
14 |

1. Disconnect the EBCM/EBTCM pump motor connector C2.
2. Connect a 10A fused jumper wire between the pump motor connector C2 terminal 1 and battery voltage.
3. Connect a jumper wire between the pump motor connector C2 terminal 2 and ground. Only attempt to run the pump motor for 5 seconds.
4. Disconnect the jumper wires.
5. Inspect the 10A fuse in the jumper wire.

Is the fuse OK?

--

Go to Step 15

Go to Step 6

15 |

1. Zero the J 39200 DMM leads.
2. Using J 39200 DMM, measure the resistance between terminals 1 and 2 of the pump motor connector C2.

Is the resistance within the range specified in the value(s) column?

0-4 ohms

Go to Step 11

Go to Step 6

16 |

1. Reconnect all previously disconnected components.
2. Using a scan tool clear the DTC.
3. Remove the scan tool from the DLC.
4. Carefully drive the vehicle above 12 Km/h (8 mph) for several minutes.

Does the DTC reset as a current DTC?

--

Go to Step 2

Go to Diagnostic System Check