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For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Silhouette 🢒 Brakes 🢒 Antilock Brake System 🢒 DTC C1358 Left TCS Motor Circuit Shorted to Voltage

Object Number: 155214 Size: SF
ABS Components
Antilock Brake System Schematics
Handling ESD Sensitive Parts Notice

Circuit Description

DTC C1358 identifies a TCS motor circuit that shorts to voltage or a TCS motor that has low or no resistance. DTC C1358 will cause one of the following conditions:

    • The TCS motor cannot be controlled at the commanded current rate.
    • The TCS motor will turn in the opposite direction or the TCS motor will not turn at all.

Conditions for Setting the DTC

DTC C1358 can set only when the TCS motor is commanded off.

A malfunction exists if the EBCM/EBTCM detects an out of range voltage on either of the left front TCS motor circuits indicating a short to voltage or a shorted TCS motor.

Action Taken When the DTC Sets
    • A malfunction DTC stores.
    • The TCS disables.
    • The amber TCS indicator turns on.

Conditions for Clearing the DTC
    • The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTC function is used.
    • 100 drive cycles pass with no DTC detected.

Diagnostic Aids

Use the enhanced diagnostic function of the Scan Tool in order to measure the frequency of the malfunction. Refer to the Scan Tool manual or Scan Tool Diagnostics located in this section for the procedure.

If the malfunction is not current perform the following procedure in order to identify an intermittent malfunction in the motor circuitry or connections:

  1. Wiggle the wires of the affected channel.
  2. Inspect to see if the DTC resets.

Thoroughly inspect any circuitry that may cause the intermittent complaint for the following conditions:

    • Rubbed-through wire insulation
    • A broken wire inside the insulation
    • Backed out terminals
    • Improper mating
    • Broken locks
    • Improperly formed or damaged terminals
    • Poor terminal-to-wiring connections
    • Physical damage to the wiring harness

Step

Action

Value(s)

Yes

No

1

Was the Diagnostic System Check performed?

--

Go to Step 2

Go to Diagnostic System Check

2

Does DTC C1358 occur intermittently?

--

Go to Diagnostic System Check

Go to Step 3

3
  1. Turn the ignition switch to the OFF position.
  2. Disconnect the 4-way TCS motor pack connector.
  3. Disconnect the 8-way EBCM/EBTCM connector C3.
  4. Turn the ignition switch to the RUN position, engine OFF.
  5. Use the J 39200 in order to measure the voltage between the 4-way TCS motor pack harness connector terminal A and ground.

Is any voltage present during this test?

--

Go to Step 10

Go to Step 4

4

Use J 39200 in order to measure the voltage between the 4-way TCS motor pack harness connector terminal B and ground.

Is any voltage present during this test?

--

Go to Step 11

Go to Step 5

5
  1. Turn the ignition switch to the OFF position.
  2. Use J 39200 in order to measure the resistance between the 4-way TCS motor pack harness connector terminal A and the 4-way TCS motor pack harness connector terminal B.

Is the resistance within the specified range?

0.2-1.5ohms

Go to Step 6

Go to Step 9

6

Use the J 39200 in order to measure the resistance between the 4-way TCS motor pack connector terminal A and the 4-way TCS motor pack connector terminal B.

Is continuity present during the above test?

--

Go to Step 12

Go to Step 7

7
    • Inspect the following components for damage:
      • The 4-way TCS motor pack connector
      • The 4-way TCS motor pack harness connector
      • Damage may cause a short to voltage with the connector connected.
    • Inspect the following components for damage:
       - The 8-way EBCM/EBTCM connector C3
       -  The 8-way EBCM/EBTCM harness connector C3
       - (Damage may cause a short to voltage with the connector connected.)

Is there damage which may cause a short to voltage?

--

Go to Step 13

Go to Step 8

8
  1. Reconnect the 4-way TCS motor pack connector.
  2. Reconnect the 8-way EBCM/EBTCM connector C3.
  3. Start the vehicle.
  4. Test drive the vehicle obtaining a speed at least 16 km/h (10 mph).
  5. Stop the vehicle.
  6. Turn the ignition switch to the OFF position.
  7. Repeat the drive sequence two additional times.
  8. Use the Scan Tool in order to inspect for DTCs.

Does DTC C1358 set as a current DTC during the last three drive cycles?

--

Go to Step 14

Go to Step 15

9

Replace the TCS motor pack. Refer to Traction Control System Motor Pack Replacement .

Is the repair complete?

--

Go to Diagnostic System Check

--

10

Repair the short to voltage in CKT 564.

Is the repair complete?

--

Go to Diagnostic System Check

--

11

Repair the short to voltage in CKT 565.

Is the repair complete?

--

Go to Diagnostic System Check

--

12

Repair the short between CKT 564 and CKT 565.

Is the repair complete?

--

Go to Diagnostic System Check

--

13

Replace all of the following components that are damaged:

    • The terminals
    • The connectors
    • The wires

Is the repair complete?

--

Go to Diagnostic System Check

--

14

Replace the EBCM/EBTCM. Refer to Electronic Brake and Traction Control Module Replacement .

Is the repair complete?

--

Go to Diagnostic System Check

--

15

Is the malfunction intermittent or not present at this time?

--

Go to Diagnostic Aids

Go to Diagnostic System Check