2001 Isuzu Rodeo Question Brake Pedal Travel

Any dash lights come on when it happens?

The combination valve may be defective if the dash light didn't come on during the problem. If this is bad pressures between front and rear is affected, and pedal hieghts will change until the valve centers.

If the combination valve is bad, we can test it! Open a bleeder at the rear and have a friend turn the key on wait until the warning light goes out, open bleeder, push pedal down slowly and hold, close the bleeder, did the warning light go on? Then repeat this test at a front bleeder, if thelight does not go on, valve is bad! The other possibilty is contaminated fluid, if tranny or motor oil was added to the master cylinder, you will also have these problems, and it will get worse until all parts made of rubber are replaced, oil swells the seals and softens them. Test the fluid by removing some from the master and putting it in a cup of water. Swirl it, the color should turn milky white, with NO OIL beads in it.

Not likly that the EGR has anything to do with it. Read the codes like this...post em and we go from there. OK" ANTI-LOCK -2001 Isuzu Rodeo LS
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RETRIEVING DIAGNOSTIC TROUBLE CODES

Using Scan Tool
Connect scan tool to Data Link Connector (DLC). See Fig. 1 . Following scan tool manufacturer's instructions, select appropriate mode to view DTCs. If DTCs retrieved, see DIAGNOSTIC TROUBLE CODE INDEX table. Identify DTC and perform specified diagnostic procedure. See DIAGNOSTIC
TESTS . After repairs, DTCs must be cleared. See CLEARING DIAGNOSTIC TROUBLE CODES . If no DTCs are retrieved, diagnose by symptom. See SYSTEM TESTS .

Using ABS Warning Light
1.When ABS warning light remains illuminated, EHCU will store DTCs and disable ABS system. If DTCs are not displayed, wiring harness from EHCU to ABS warning light may be disconnected. Check and repair harness if necessary. 2.Ensure ignition is off and brake pedal is released. Using jumper wire, jumper Data Link Connector (DLC) terminals No. 4 and 12. See Fig. 1 . Turn ignition on. DTC is displayed by flashing ABS warning light. See Fig. 2 . 3.A stored DTC is displayed 3 times, each being separated by a 3.2 second pause. If multiple DTCs are set, second DTC will follow after first DTC is displayed a third time. All DTCs contain 2 digits. First digit of DTC is identified by a series of .4 second flashes. After a 1.2 second pause, second digit of DTC will follow in another series of .4 second flashes. If no DTCs have been stored, ABS warning light will repeat DTC 12 (system normal). 4.If DTCs are retrieved, see DIAGNOSTIC TROUBLE CODE INDEX table. Identify DTC and perform specified diagnostic procedure. See DIAGNOSTIC TESTS . After repairs, DTCs must be cleared. See CLEARING DIAGNOSTIC TROUBLE CODES . If no DTCs are retrieved, diagnose by symptom. See SYSTEM TESTS .
Fig. 1: Identifying Data Link Connector Terminals

Fig. 2: ABS Diagnosis Using ABS Warning Light

I have found two ways, one is sure to be right.
1. With the ignition off jumper pins 4 &12 of the DLC connector 2. Switch the ignition on & allow the ABS lamp to flash at least once before proceeding. 3. Depress the brake pedal by hand until you hear the solenoid click, then release the pedal.  Repeat  8 times within 3 seconds.  After the 8th pedal cycle the ABS lamp stops flashing, lights for 1 second, then begins flashing code 12 (no codes).  Memory is erased once code 12 flashes 4 times.  Shop key data incorrect & missing important steps to clear fault code. Please revise.
Second way:
Ensure ignition is off and brake pedal is not depressed. Using jumper wire, jumper DLC terminals No. 4 and 12 together, and within 3 seconds, rapidly depress and release brake pedal 6 or more times. See Fig. 1 . DTCs will not be cleared if brake pedal is not depressed within 3 seconds of jumping DLC terminals.

Brakes problem
2001 Isuzu Rodeo Question 6 cyl Four Wheel Drive Automatic 210, 00 miles
This is what I was working on, I did not see 1996? Did I miss something? On 1996 you use the same pins and read the ABS light, NOT Air bag. Same as on 2001! Check your fuse. And connectors to abs system.

DTC 32: PUMP MOTOR FAILURE 1. Turn ignition off. Disconnect coil integrated module harness connector. Measure voltage between ground and coil integrated module harness connector terminal No. 1 (White/Green wire). If battery voltage is present, go to next step. If battery voltage is not present, check condition of ABS fuse (60-amp) located in engine compartment fuse block. Check White/Green wire between fuse and coil integrated module for open or short to ground. Repair as necessary. After repairs, go to step 5. 2. Ensure harness from Electronic Hydraulic Control Unit (EHCU) unit is connected to coil integrated module connector. Go to next step. 3. Check condition of harness from EHCU. If harness is okay, go to next step. If harness is not okay, repair as necessary. After repairs, go to step 5. 4. Measure resistance between EHCU connector pins No. 1 and 2 (component side). If resistance is.2-1.0 ohm, replace coil integrated module. If resistance is not.2-1.0 ohm, replace EHCU. 5. Reconnect all components. Ensure all component are properly installed. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM. Verify system operation. See SYSTEM OPERATION CHECK under TROUBLE SHOOTING.