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HOMESERVICE MANUALSISUZU2006ASCENDER S, 5.3 M, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTILOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEMDIAGNOSTIC INFORMATION & PROCEDURESDTC C0035 OR C0040DIAGNOSTIC AIDS
2006 Isuzu Ascender S, 5.3 M, 4WD

Diagnostic Aids

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Diagnostic Aids

Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to the following:

If the customer's concern is that the ABS indicator is on only during humid conditions such as rain, snow or vehicle wash, thoroughly inspect the wheel speed sensor circuits for signs of water intrusion. Use the following procedure in order to help isolate the problem area:

  1. Spray the suspected area with a 5 percent salt water solution.
  2. Operate the vehicle at a speed greater than 13 km/h (8 mph) for at least 30 seconds.

Repair or replace the suspect harness if the DTC sets.

DTC C0035 or C0040

Step Action Values Yes No
Schematic Reference: ABS Schematics 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Use a scan tool in order to clear the DTCs.
  2. Operate the vehicle at a speed greater than the specified value.
Does the DTC set?		 13 km/h (8 mph) Go to Step 3  Go to Diagnostic Aids
3
  1. Turn OFF the ignition.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Disconnect the wheel speed sensor connector.
  4. Use a DMM in order to measure the resistance across the wheel speed sensor.
Does the resistance measure within the specified range?		 700-10,000 Ω Go to Step 4  Go to Step 8 
4
  1. Slowly spin the wheel by hand.
  2. Use a DMM in order to measure the A/C voltage across the wheel speed sensor as the wheel spins.
Does the A/C voltage measure greater than the specified value?		 100 mV Go to Step 5  Go to Step 8 
5 Inspect for poor connections at the harness connector of the wheel speed sensor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 6 
6
  1. Disconnect from the Electronic Brake Control Module (EBCM), the harness connector containing the wheel speed sensor circuits.
  2. Test the wheel speed sensor circuits for the following:
Did you find and correct the condition?		 - Go to Step 10  Go to Step 7 
7 Inspect for poor connections at the harness connector for the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 9 
8 Replace the wheel speed sensor. Refer to Wheel Speed Sensor Replacement .
Did you complete the replacement?		 - Go to Step 10  -
9 Replace the EBCM. Refer to Control Module References for replacement, setup and programming.
Did you complete the replacement?		 - Go to Step 10  -
10
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 - Go to Step 2  System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.